NHANES Spirometry Normal Values

These NHANES 1999 regressions are recommended for ethnically appropriate individuals by the ATS/ERS Task Force:2005 ‘Standardization of Lung Function Testing’. They are used all over The Americas and elsewhere. The tables below are for mean normal value (Predicted) and the Lower Limit of Normality (LLN).

Select your preferred regression set from the links below then enter the subjects demographics in the boxes below to automatically find the correct values within the reference tables.

Caucasian Predicted Values – FVC Males

Age
Height in cm8101520253035404550556065707580
1221.531.481.732.482.432.352.272.172.061.941.801.651.481.301.110.91
1301.891.842.092.842.782.712.632.532.422.292.162.001.841.661.471.26
1372.262.222.473.223.163.093.012.912.802.672.542.382.222.041.851.64
1452.662.622.873.623.563.493.413.313.203.072.942.782.622.442.252.04
1523.093.043.294.043.983.913.833.733.623.503.363.213.042.862.672.47
1603.533.493.734.494.434.364.274.184.063.943.803.653.493.313.122.91
1684.003.954.204.954.894.824.744.644.534.414.274.123.953.773.583.38
1754.484.444.695.445.385.315.235.135.024.894.754.604.444.264.073.86
1834.994.955.195.955.895.825.735.645.535.405.265.114.954.774.584.37
1915.525.485.726.486.426.356.266.176.065.935.795.645.485.305.114.90
1986.076.036.287.036.976.906.826.726.616.486.356.196.035.855.665.45
2066.656.606.857.607.557.477.397.297.187.066.926.776.606.426.236.03

Caucasian Predicted Values – FEV1 Males

Age
Height in cm8101520253035404550556065707580
1221.311.391.742.322.222.101.981.851.711.571.411.251.080.890.700.51
1301.581.662.012.592.492.372.252.121.981.841.681.521.351.160.970.78
1371.861.942.302.882.772.662.542.412.272.121.971.801.631.451.261.06
1452.172.252.603.183.082.962.842.712.572.432.272.111.941.751.561.37
1522.492.572.923.503.393.283.163.032.892.752.592.432.252.071.881.68
1602.822.903.263.833.733.623.503.373.233.082.932.762.592.412.222.02
1683.173.253.614.194.083.973.853.723.583.433.283.112.942.762.572.37
1753.543.623.984.554.454.344.224.093.953.803.653.483.313.132.942.74
1833.934.014.364.944.844.724.604.474.334.194.033.873.703.513.323.13
1914.334.414.765.345.245.125.004.874.744.594.434.274.103.913.733.53
1984.754.835.185.765.655.545.425.295.155.014.854.694.514.334.143.94
2065.185.265.616.196.095.985.855.725.595.445.285.124.954.774.584.38

Caucasian Predicted Values – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.860.860.850.840.830.820.810.800.790.780.770.760.750.740.730.72

Caucasian Predicted Values – PEF Males

Age
Height in cm8101520253035404550556065707580
1222.973.194.225.906.026.076.065.995.855.655.385.044.644.183.653.05
1303.443.674.696.386.506.556.546.476.336.125.865.525.124.664.133.53
1373.954.185.206.887.007.067.056.986.846.636.366.035.635.164.634.04
1454.494.715.747.427.547.607.597.517.377.176.906.566.165.705.174.58
1525.055.286.307.988.108.168.158.087.947.737.467.136.736.275.745.14
1605.655.876.908.588.708.758.758.678.538.338.067.727.326.866.335.74
1686.276.507.529.209.329.389.379.299.168.958.688.357.957.486.956.36
1756.927.158.179.859.9710.0310.029.959.819.609.339.008.608.147.617.01
1837.607.838.8510.5310.6610.7110.7010.6310.4910.2810.019.689.288.828.297.69
1918.318.549.5611.2511.3711.4211.4111.3411.2010.9910.7310.399.999.539.008.40
1989.059.2810.3011.9812.1112.1612.1512.0811.9411.7311.4611.1310.7310.279.749.14
2069.8210.0511.0712.7512.8712.9312.9212.8512.7112.5012.2311.9011.5011.0310.509.91

Caucasian Predicted Values – FVC Females

Age
Height in cm8101520253035404550556065707580
1141.201.321.611.801.811.801.771.721.651.561.451.331.181.020.830.63
1221.471.591.882.072.072.062.031.981.911.831.721.591.451.281.100.90
1301.751.872.172.352.362.352.322.272.202.112.001.881.731.571.381.18
1372.052.172.472.652.662.652.622.572.502.412.302.182.031.871.681.48
1452.372.492.782.972.982.972.942.892.822.732.622.502.352.192.001.80
1522.712.823.123.313.313.303.273.223.153.062.962.832.692.522.342.14
1603.063.183.473.663.673.653.623.573.513.423.313.183.042.872.692.49
1683.433.553.844.034.044.023.993.943.883.793.683.553.413.243.062.86
1753.823.934.234.424.424.414.384.334.264.174.073.943.803.633.453.25
1834.224.344.634.824.834.824.794.744.674.584.474.354.204.043.853.65
1914.644.765.065.245.255.245.215.165.095.004.894.774.624.464.274.07
1985.085.205.495.685.695.685.655.605.535.445.335.215.064.904.714.51
2065.545.655.956.146.146.136.106.055.985.905.795.665.525.355.174.97

Caucasian Predicted Values – FEV1 Females

  Age
Height in cm 8101520253035404550556065707580
1141.151.281.611.791.721.651.571.481.381.271.151.020.880.730.570.40
1221.361.491.821.991.931.861.781.691.591.481.361.231.090.940.780.61
1301.581.712.042.212.152.082.001.911.811.701.581.451.311.161.000.83
1371.811.952.272.452.382.312.232.142.041.931.811.681.541.391.231.07
1452.062.192.522.692.632.562.482.392.292.182.061.931.791.641.481.31
1522.322.452.782.952.892.822.742.652.552.442.322.192.051.901.741.57
1602.602.733.053.233.173.093.012.922.822.712.592.462.322.172.011.85
1682.883.013.343.513.453.383.303.213.113.002.882.752.612.462.302.13
1682.883.013.343.513.453.383.303.213.113.002.882.752.612.462.302.13
1753.183.313.643.813.753.683.603.513.413.303.183.052.912.762.602.43
1833.503.633.954.134.073.993.913.823.723.613.493.363.223.072.922.75
1913.823.954.284.464.394.324.244.154.053.943.823.693.553.403.243.07
1984.164.304.624.804.734.664.584.494.394.284.164.033.893.743.583.41
2064.524.654.985.155.095.024.944.844.744.634.514.384.244.103.943.77

Caucasian Predicted Values – FEV1/FVC Ratio Females

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.890.890.880.870.850.840.830.820.810.800.790.780.770.760.750.74

Caucasian Predicted Values – PEF Females

Age
Height in cm8101520253035404550556065707580
1142.593.194.124.334.454.514.524.484.394.254.053.813.513.162.762.30
1222.923.534.464.674.784.854.864.824.734.584.394.143.843.493.092.64
1303.283.894.815.035.145.205.215.175.084.944.744.504.203.853.453.00
1373.664.275.195.405.525.585.595.555.465.325.124.884.584.233.833.38
1454.064.675.595.805.925.985.995.955.865.725.525.284.984.634.233.78
1524.485.096.016.236.346.406.416.376.286.145.945.705.405.054.654.20
1604.925.536.466.676.786.856.866.826.736.586.396.145.845.495.094.64
1685.396.006.927.137.257.317.327.287.197.056.856.616.315.965.565.11
1755.886.487.417.627.737.807.817.777.687.537.347.096.796.456.045.59
1836.386.997.928.138.248.318.328.288.198.047.857.607.306.956.556.10
1916.917.528.458.668.778.848.858.818.728.578.388.137.837.487.086.63
1987.478.079.009.219.329.399.409.369.279.128.938.688.388.037.637.18
2068.048.649.579.789.909.969.979.939.849.709.509.268.968.618.217.75

Caucasian Lower Limit of Normality – FVC Males

  Age
Height in cm 8101520253035404550556065707580
1221.091.051.292.051.991.921.831.741.621.501.361.211.050.870.680.47
1301.391.351.592.352.292.222.132.041.931.801.661.511.351.170.980.77
1371.711.671.912.672.612.542.452.362.242.121.981.831.671.491.301.09
1452.052.002.253.002.952.872.792.692.582.462.322.172.001.821.631.43
1522.402.362.613.363.303.233.153.052.942.812.672.522.362.181.991.78
1602.782.732.983.733.673.603.523.423.313.193.052.902.732.552.362.16
1683.173.133.374.124.074.003.913.813.703.583.443.293.122.952.752.55
1753.583.543.784.534.484.414.324.224.113.993.853.703.533.363.162.96
1834.013.964.214.964.914.834.754.654.544.424.284.133.963.783.593.39
1914.454.414.665.415.355.285.205.104.994.864.734.574.414.234.043.83
1984.924.885.125.875.825.755.665.565.455.335.195.044.874.704.504.30
2065.405.365.606.366.306.236.156.055.945.815.675.525.365.184.994.78

Caucasian Lower Limit of Normality – FEV1 Males

Age
Height in cm8101520253035404550556065707580
1220.941.021.371.951.841.731.611.481.341.201.040.880.700.520.330.13
1301.161.241.592.172.071.951.831.701.571.421.261.100.930.750.560.36
1371.401.471.832.412.302.192.071.941.801.651.501.331.160.980.790.59
1451.641.722.082.662.552.442.322.192.051.901.751.581.411.231.040.84
1521.911.992.342.922.812.702.582.452.312.172.011.851.671.491.301.10
1602.182.262.623.193.092.982.862.732.592.442.292.121.951.771.581.38
1682.472.552.913.483.383.273.153.022.882.732.582.412.242.061.871.67
1752.782.853.213.793.683.573.453.323.183.042.882.722.542.362.171.97
1833.093.173.534.104.003.893.773.643.503.353.203.032.862.682.492.29
1913.423.503.864.434.334.224.103.973.833.683.533.363.193.012.822.62
1983.773.844.204.784.674.564.444.314.174.033.873.713.533.353.162.96
2064.124.204.565.135.034.924.804.674.534.384.234.063.893.713.523.32

Caucasian Lower Limit of Normality – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

 Age
 8101520253035404550556065707580
Ratio:0.770.760.750.740.730.720.710.700.690.680.670.660.650.640.630.62

Caucasian Lower Limit of Normality – PEF Males

Age
Height in cm8101520253035404550556065707580
1221.872.103.124.804.924.984.974.904.764.554.283.953.553.082.551.96
1302.212.433.465.145.265.325.315.235.094.894.624.293.893.422.892.30
1372.572.793.825.505.625.675.665.595.455.254.984.644.243.783.252.65
1452.953.174.195.886.006.056.045.975.835.625.365.024.624.163.633.03
1523.343.574.596.276.396.456.446.376.236.025.755.425.024.564.033.43
1603.763.995.016.696.816.876.866.796.656.446.175.845.444.974.443.85
1684.204.435.457.137.257.317.307.237.096.886.616.285.885.414.884.29
1754.664.895.917.597.717.777.767.697.557.347.076.746.345.875.344.75
1835.145.376.398.078.198.258.248.178.037.827.557.226.826.355.825.23
1915.645.876.898.578.698.758.748.678.538.328.057.727.326.856.335.73
1986.166.397.419.099.229.279.269.199.058.848.578.247.847.386.856.25
2066.716.937.969.649.769.819.809.739.599.399.128.788.387.927.396.79

Caucasian Lower Limit of Normality – FVC Females

Age
Height in cm8101520253035404550556065707580
1140.860.981.271.461.471.461.421.371.311.221.110.980.840.680.490.29
1221.081.201.491.681.691.671.641.591.531.441.331.201.060.890.710.51
1301.311.431.731.911.921.911.881.831.761.671.561.441.291.130.940.74
1371.561.681.972.162.172.162.132.082.011.921.811.691.541.381.190.99
1451.821.942.242.422.432.422.392.342.272.182.071.951.801.641.461.25
1522.102.222.512.702.712.692.662.612.552.462.352.222.081.911.731.53
1602.392.512.802.993.002.992.952.902.842.752.642.512.372.212.021.82
1682.692.813.113.293.303.293.263.213.143.052.952.822.672.512.332.12
1753.013.133.433.613.623.613.583.533.463.373.263.142.992.832.652.44
1833.353.463.763.953.953.943.913.863.793.703.603.473.333.162.982.78
1913.693.814.114.294.304.294.264.214.144.053.943.823.673.513.333.12
1984.054.174.474.654.664.654.624.574.504.414.314.184.033.873.693.48
2064.434.554.845.035.045.034.994.944.884.794.684.554.414.254.063.86

Caucasian Lower Limit of Normality – FEV1 Females

Age
Height in cm8101520253035404550556065707580
1140.861.001.321.501.431.361.281.191.090.980.860.730.590.440.280.11
1221.031.161.491.661.601.531.451.361.261.151.030.900.760.610.450.28
1301.211.341.671.841.781.711.631.541.431.321.201.080.940.790.630.46
1371.401.531.862.031.971.901.811.721.621.511.391.261.120.980.820.65
1451.601.732.052.232.172.102.011.921.821.711.591.461.321.171.020.85
1521.811.942.262.442.382.312.222.132.031.921.801.671.531.391.231.06
1602.032.162.492.662.602.532.452.352.252.142.021.891.751.611.451.28
1682.262.392.722.892.832.762.682.592.492.382.262.131.991.841.681.51
1752.502.632.963.133.073.002.922.832.732.622.502.372.232.081.921.75
1832.762.893.213.393.333.253.173.082.982.872.752.622.482.332.172.01
1913.023.153.483.653.593.523.443.353.253.143.022.892.752.602.442.27
1983.293.433.753.933.863.793.713.623.523.413.293.163.022.872.712.55
2063.583.714.044.214.154.084.003.913.813.703.583.453.313.163.002.83

Caucasian Lower Limit of Normality – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio:0.790.790.780.770.760.750.740.730.720.700.690.680.670.660.650.64

Caucasian Lower Limit of Normality – PEF Females

Age
Height in cm8101520253035404550556065707580
1141.742.343.273.483.603.663.673.633.543.393.202.952.662.311.901.45
1221.952.563.493.703.813.883.893.853.763.613.423.172.872.522.121.67
1302.192.793.723.934.054.114.124.083.993.843.653.403.112.762.351.90
1372.433.043.964.184.294.354.374.334.234.093.903.653.353.002.602.15
1452.693.304.224.444.554.614.634.594.494.354.163.913.613.262.862.41
1522.973.574.504.714.824.894.904.864.774.624.434.183.883.543.132.68
1603.253.864.795.005.115.185.195.155.064.914.724.474.173.823.422.97
1683.564.165.095.305.425.485.495.455.365.215.024.774.484.133.723.27
1753.874.485.405.625.735.795.815.775.675.535.345.094.794.444.043.59
1834.204.815.745.956.066.126.146.106.005.865.675.425.124.774.373.92
1914.555.156.086.296.416.476.486.446.356.206.015.765.475.124.724.26
1984.905.516.446.656.766.836.846.806.716.566.376.125.825.475.074.62
2065.285.886.817.027.147.207.217.177.086.946.746.496.205.855.454.99

African-American Predicted Values – FVC Males

Age
Height in cm8101520253035404550556065707580
1221.231.201.381.961.871.781.681.591.501.411.321.231.141.050.960.87
1301.551.521.702.282.192.092.001.911.821.731.641.551.461.371.281.18
1371.891.852.042.622.522.432.342.252.162.071.981.891.801.701.611.52
1452.242.212.402.972.882.792.702.612.522.432.342.242.152.061.971.88
1522.622.592.783.353.263.173.082.992.892.802.712.622.532.442.352.26
1603.022.983.173.753.653.563.473.383.293.203.113.022.932.842.742.65
1683.433.403.594.164.073.983.893.803.713.623.523.433.343.253.163.07
1753.873.844.024.604.514.414.324.234.144.053.963.873.783.693.593.50
1834.324.294.485.054.964.874.784.694.604.504.414.324.234.144.053.96
1914.804.764.955.525.435.345.255.165.074.984.894.804.704.614.524.43
1985.295.265.446.025.935.835.745.655.565.475.385.295.205.115.024.92
2065.805.775.966.536.446.356.266.166.075.985.895.805.715.625.535.44

African-American Predicted Values – FEV1 Males

  Age
Height in cm 8101520253035404550556065707580
1221.081.121.371.841.731.611.491.381.261.151.030.920.800.690.570.46
1301.331.371.622.091.981.861.751.631.521.401.291.171.050.940.820.71
1371.601.641.892.362.252.132.021.901.781.671.551.441.321.211.090.98
1451.881.922.182.642.532.412.302.182.071.951.841.721.611.491.371.26
1522.182.222.472.942.832.712.602.482.372.252.142.021.901.791.671.56
1602.492.532.793.263.143.032.912.802.682.572.452.332.222.101.991.87
1682.822.863.123.593.473.363.243.133.012.892.782.662.552.432.322.20
1753.173.213.463.933.823.703.593.473.353.243.123.012.892.782.662.55
1833.533.573.824.294.184.063.953.833.713.603.483.373.253.143.022.91
1913.903.944.204.674.554.444.324.214.093.973.863.743.633.513.403.28
1984.294.334.595.064.944.834.714.604.484.374.254.134.023.903.793.67
2064.704.744.995.465.355.235.125.004.894.774.664.544.434.314.194.08

African-American Predicted Values – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.880.870.860.860.850.840.830.820.810.800.790.780.770.760.760.75

African-American Predicted Values – PEF Males

  Age
Height in cm 8101520253035404550556065707580
1222.722.813.695.475.275.064.864.664.454.254.043.843.643.433.233.02
1303.243.344.216.005.795.595.385.184.984.774.574.364.163.953.753.55
1373.803.894.776.556.356.145.945.745.535.335.124.924.714.514.314.10
1454.384.485.357.146.936.736.536.326.125.915.715.515.305.104.894.69
1525.005.105.977.767.557.357.156.946.746.536.336.125.925.725.515.31
1605.655.756.628.418.208.007.807.597.397.186.986.786.576.376.165.96
1686.346.437.319.098.898.688.488.278.077.877.667.467.257.056.856.64
1757.057.158.029.809.609.409.198.998.788.588.388.177.977.767.567.36
1837.807.898.7710.5510.3510.149.949.739.539.339.128.928.718.518.318.10
1918.578.679.5411.3311.1210.9210.7210.5110.3110.109.909.709.499.299.088.88
1989.389.4810.3512.1411.9311.7311.5311.3211.1210.9110.7110.5110.3010.109.899.69
20610.2310.3211.1912.9812.7712.5712.3712.1611.9611.7511.5511.3511.1410.9410.7310.53

African-American Predicted Values – FVC Females

Age
Height in cm8101520253035404550556065707580
1141.021.051.271.471.441.401.341.261.181.080.970.840.700.550.390.21
1221.261.301.511.721.691.641.581.511.421.321.211.090.950.800.630.45
1301.521.561.771.981.951.901.841.771.681.581.471.351.211.060.890.71
1371.801.832.052.262.222.182.122.051.961.861.751.621.481.331.170.99
1452.092.132.342.552.522.472.412.342.252.152.041.921.781.621.461.28
1522.402.432.652.862.822.782.722.652.562.462.352.222.081.931.771.59
1602.722.762.973.183.153.103.042.972.882.792.672.552.412.262.091.91
1683.063.103.313.523.493.443.383.313.223.133.012.892.752.602.432.25
1753.423.453.673.883.843.803.743.673.583.483.373.243.102.952.792.61
1833.793.834.044.254.224.174.114.043.953.853.743.613.483.323.162.98
1914.184.214.434.634.604.564.504.424.344.244.134.003.863.713.553.37
1984.584.624.835.045.014.964.904.834.744.644.534.404.274.113.953.77
2065.005.035.255.465.425.385.325.255.165.064.954.824.684.534.374.19

African-American Predicted Values – FEV1 Females

Age
Height in cm8101520253035404550556065707580
1140.921.031.321.461.381.291.191.090.990.880.760.640.520.390.250.11
1221.111.231.521.661.571.481.391.291.181.070.960.840.710.580.450.31
1301.321.441.731.871.781.691.601.491.391.281.161.040.920.790.660.52
1371.541.661.952.092.001.911.821.721.611.501.381.261.141.010.880.74
1451.771.892.182.322.242.142.051.951.841.731.621.501.371.241.110.97
1522.022.142.432.572.482.392.292.192.091.981.861.741.621.491.351.22
1602.282.392.682.832.742.652.552.452.352.242.122.001.881.751.611.47
1682.552.662.953.103.012.922.822.722.622.512.392.272.152.021.881.74
1752.832.953.243.383.293.203.113.012.902.792.682.562.432.302.172.03
1833.133.243.533.683.593.503.403.303.203.092.972.852.732.602.462.32
1913.443.553.843.983.903.813.713.613.513.403.283.163.042.912.772.63
1983.763.874.164.314.224.134.033.933.833.723.603.483.363.233.092.95
2064.094.214.504.644.554.464.374.274.164.053.943.823.693.563.433.29

African-American Predicted Values – FEV1/FVC Ratio Females

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.900.900.890.880.870.860.850.830.820.810.800.790.780.770.760.75

African-American Predicted Values – PEF Females

Age
Height in cm8101520253035404550556065707580
1142.652.983.804.294.274.214.113.973.783.553.282.972.612.211.771.29
1223.013.334.154.654.634.574.474.324.143.913.633.322.962.572.121.64
1303.383.714.535.035.014.954.854.704.514.284.013.703.342.942.502.02
1373.784.114.935.435.415.355.255.104.924.694.414.103.743.342.902.42
1454.214.545.365.855.835.775.675.535.345.114.844.524.173.773.332.84
1524.664.985.806.306.286.226.125.975.795.565.294.974.614.223.773.29
1605.135.456.276.776.756.696.596.446.266.035.765.445.094.694.253.76
1685.625.956.777.267.247.187.086.946.756.526.255.935.585.184.744.25
1756.146.467.287.787.767.707.607.457.277.046.766.456.095.705.254.77
1836.677.007.828.328.308.248.147.997.807.587.306.996.636.235.795.31
1917.247.568.388.888.868.808.708.558.378.147.877.557.196.806.355.87
1987.828.158.979.469.459.399.289.148.958.728.458.147.787.386.946.46
2068.438.769.5710.0710.059.999.899.759.569.339.068.748.397.997.557.06

African-American Lower Limit of Normality – FVC Males

Age
Height in cm8101520253035404550556065707580
1220.790.760.951.521.431.341.251.161.070.970.880.790.700.610.520.43
1301.051.021.211.781.691.601.511.421.331.241.151.050.960.870.780.69
1371.331.301.492.061.971.881.791.701.611.521.421.331.241.151.060.97
1451.631.591.782.362.262.172.081.991.901.811.721.631.541.451.351.26
1521.941.912.092.672.572.482.392.302.212.122.031.941.851.761.661.57
1602.262.232.422.992.902.812.722.632.542.452.352.262.172.081.991.90
1682.612.572.763.333.243.153.062.972.882.792.702.612.512.422.332.24
1752.962.933.123.693.603.513.423.333.243.153.052.962.872.782.692.60
1833.343.313.494.073.983.883.793.703.613.523.433.343.253.163.062.97
1913.733.703.884.464.364.274.184.094.003.913.823.733.643.553.453.36
1984.134.104.294.864.774.684.594.504.414.324.224.134.043.953.863.77
2064.564.524.715.285.195.105.014.924.834.744.654.554.464.374.284.19

African-American Lower Limit of Normality – FEV1 Males

  Age
Height in cm 8101520253035404550556065707580
1220.690.730.991.451.341.221.110.990.880.760.650.530.420.300.180.07
1300.890.931.191.661.541.431.311.201.080.970.850.730.620.500.390.27
1371.111.151.401.871.761.641.531.411.301.181.070.950.830.720.600.49
1451.341.381.632.101.991.871.751.641.521.411.291.181.060.950.830.72
1521.581.621.872.342.232.111.991.881.761.651.531.421.301.191.070.96
1601.831.872.122.592.482.362.252.132.021.901.791.671.551.441.321.21
1682.092.132.392.862.742.632.512.402.282.172.051.931.821.701.591.47
1752.372.412.673.143.022.902.792.672.562.442.332.212.101.981.871.75
1832.662.702.953.423.313.193.082.962.852.732.622.502.392.272.152.04
1912.963.003.263.733.613.503.383.263.153.032.922.802.692.572.462.34
1983.283.323.574.043.923.813.693.583.463.353.233.123.002.892.772.65
2063.603.643.904.374.254.144.023.903.793.673.563.443.333.213.102.98

African-American Lower Limit of Normality – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.770.770.760.750.740.730.720.720.710.700.690.680.670.660.650.64

African-American Lower Limit of Normality – PEF Males

  Age
Height in cm 8101520253035404550556065707580
1221.461.562.434.224.013.813.613.403.202.992.792.592.382.181.971.77
1301.831.922.804.584.384.173.973.763.563.363.152.952.742.542.342.13
1372.212.313.184.964.764.564.354.153.943.743.543.333.132.922.722.52
1452.622.713.595.375.174.964.764.554.354.153.943.743.533.333.132.92
1523.043.144.015.805.595.395.194.984.784.574.374.173.963.763.553.35
1603.493.594.466.256.045.845.645.435.235.024.824.624.414.214.003.80
1683.974.064.946.726.526.316.115.905.705.505.295.094.884.684.484.27
1754.464.565.437.217.016.816.606.406.195.995.795.585.385.174.974.77
1834.985.075.957.737.537.327.126.916.716.516.306.105.895.695.495.28
1915.515.616.488.278.067.867.667.457.257.046.846.646.436.236.025.82
1986.076.177.048.838.628.428.228.017.817.607.407.206.996.796.586.38
2066.666.757.629.419.219.008.808.598.398.187.987.787.577.377.166.96

African-American Lower Limit of Normality – FVC Females

  Age
Height in cm 8101520253035404550556065707580
1140.660.700.911.121.091.040.980.910.820.730.610.490.350.200.030.15
1220.860.901.111.321.281.241.181.111.020.920.810.680.550.390.230.05
1301.071.101.321.531.491.451.391.321.231.131.020.890.750.600.440.26
1371.291.331.541.751.721.671.611.541.451.351.241.110.980.820.660.48
1451.521.561.781.981.951.901.841.771.691.591.471.351.211.060.890.71
1521.771.812.022.232.202.152.092.021.931.831.721.601.461.301.140.96
1602.032.072.282.492.462.412.352.282.192.091.981.851.721.561.401.22
1682.302.342.552.762.732.682.622.552.462.362.252.131.991.841.671.49
1752.592.622.843.053.012.972.912.832.752.652.542.412.272.121.961.78
1832.882.923.143.343.313.263.203.133.052.952.832.712.572.422.252.07
1913.193.233.453.653.623.573.513.443.363.263.143.022.882.732.562.38
1983.523.553.773.983.943.903.843.763.683.583.473.343.203.052.892.71
2063.853.894.104.314.284.234.174.104.013.923.803.683.543.393.223.04

African-American Lower Limit of Normality – FEV1 Females

  Age
Height in cm 8101520253035404550556065707580
1220.770.891.181.321.231.141.050.950.840.730.620.500.370.240.110.03
1300.941.051.341.481.401.311.211.111.000.890.780.660.530.400.270.13
1371.111.231.521.661.571.481.381.281.181.070.950.830.710.580.440.30
1451.291.411.701.841.751.661.571.471.361.251.141.020.890.760.630.49
1521.491.601.892.031.951.861.761.661.561.451.331.211.090.960.820.68
1601.691.812.102.242.152.061.961.861.761.651.531.411.291.161.020.89
1681.902.022.312.452.362.272.182.081.971.861.751.631.501.371.241.10
1752.132.242.532.672.592.502.402.302.202.091.971.851.731.601.461.32
1832.362.482.772.912.822.732.632.532.432.322.202.081.961.831.691.56
1912.602.723.013.153.062.972.882.782.672.562.452.332.202.071.941.80
1982.862.973.263.403.323.233.133.032.932.822.702.582.462.332.192.05
2063.123.243.533.673.583.493.393.293.193.082.962.842.722.592.452.32

African-American Lower Limit of Normality – FEV1/FVC Ratio Females

FEV1/FVC ratio is not height related, only age.

 Age
 8101520253035404550556065707580
Ratio0.790.790.780.770.760.750.740.730.720.710.700.690.680.670.660.65

African-American Lower Limit of Normality – PEF Females

Age
Height in cm8101520253035404550556065707580
1141.661.992.813.313.293.233.132.982.792.572.291.981.621.220.780.30
1221.882.213.033.533.513.453.353.203.012.782.512.201.841.441.000.52
1302.122.443.263.763.743.683.583.433.253.022.752.432.081.681.240.75
1372.372.693.514.013.993.933.833.683.503.272.992.682.321.931.481.00
1452.632.953.774.274.254.194.093.943.763.533.262.942.592.191.751.26
1522.903.234.054.554.534.474.374.224.033.803.533.222.862.462.021.54
1603.193.524.344.844.824.764.664.514.324.103.823.513.152.752.311.83
1683.503.834.655.145.125.064.964.824.634.404.133.813.463.062.622.13
1753.824.154.965.465.445.385.285.144.954.724.454.133.783.382.942.45
1834.154.485.305.795.785.725.615.475.285.054.784.474.113.713.272.79
1914.504.835.646.146.126.065.965.825.635.405.134.814.464.063.623.13
1984.865.196.016.506.486.426.326.185.995.765.495.174.824.423.983.49
2065.235.566.386.886.866.806.706.556.366.145.865.555.194.794.353.87

Mexican-American Predicted Value – FVC Males

Age
Height in cm8101520253035404550556065707580
1221.231.281.632.322.232.132.031.921.801.671.531.381.221.050.870.69
1301.551.601.952.642.552.462.352.242.121.991.851.701.541.371.191.01
1371.901.942.292.982.892.802.692.582.462.332.192.041.881.711.541.35
1452.262.312.663.343.253.163.062.942.822.692.552.402.242.081.901.71
1522.642.693.043.723.643.543.443.333.203.072.932.782.632.462.282.10
1603.043.093.444.134.043.953.843.733.613.483.343.193.032.862.692.50
1683.473.523.874.554.464.374.274.154.033.903.763.613.453.293.112.92
1753.913.964.315.004.914.824.714.604.484.354.214.063.903.733.553.37
1834.384.434.785.465.385.285.185.064.944.814.674.524.364.204.023.83
1914.874.915.275.955.865.775.665.555.435.305.165.014.854.684.514.32
1985.375.425.776.456.376.276.176.065.945.815.675.525.365.195.014.83
2065.905.956.306.986.906.806.706.596.466.336.196.045.895.725.545.36

Mexican-American Predicted Values – FEV1 Males

  Age
Height in cm 8101520253035404550556065707580
1221.361.431.752.292.142.001.851.701.561.411.271.120.970.830.680.53
1301.651.722.042.582.432.292.141.991.851.701.551.411.261.120.970.82
1371.952.022.352.892.742.592.452.302.152.011.861.721.571.421.281.13
1452.282.352.673.213.062.922.772.632.482.332.192.041.891.751.601.45
1522.622.693.013.553.413.263.112.972.822.672.532.382.242.091.941.80
1602.983.053.373.913.773.623.473.333.183.032.892.742.592.452.302.16
1683.363.433.754.294.144.003.853.703.563.413.263.122.972.832.682.53
1753.753.824.154.684.544.394.254.103.953.813.663.513.373.223.072.93
1834.164.234.565.104.954.804.664.514.364.224.073.933.783.633.493.34
1914.594.664.995.535.385.235.094.944.794.654.504.364.214.063.923.77
1985.045.115.445.975.835.685.535.395.245.104.954.804.664.514.364.22
2065.515.585.906.446.296.156.005.855.715.565.415.275.124.974.834.68

Mexican-American Predicted Values – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

 Age
 8101520253035404550556065707580
Ratio0.880.880.870.860.850.830.820.810.800.790.780.770.760.750.740.73

Mexican-American Predicted Values – PEF Males

Age
Height in cm8101520253035404550556065707580
1222.903.033.865.425.485.485.425.305.124.884.594.233.813.332.802.20
1303.483.614.446.006.066.066.005.885.705.465.174.814.393.913.382.78
1374.104.235.066.616.676.686.626.506.326.085.785.425.004.533.993.39
1454.754.885.717.267.327.327.277.156.976.736.436.075.655.184.644.04
1525.435.566.397.958.018.017.957.837.657.417.126.766.345.865.324.73
1606.156.287.118.678.738.738.678.558.378.137.847.487.066.586.045.45
1686.917.047.879.429.489.489.439.319.138.898.598.237.817.346.806.20
1757.707.838.6610.2110.2710.2710.2210.109.929.689.389.028.608.137.596.99
1838.528.659.4811.0411.1011.1011.0410.9210.7410.5010.219.859.438.958.417.82
1919.389.5110.3411.9011.9611.9611.9011.7811.6011.3611.0710.7110.299.819.288.68
19810.2810.4111.2412.8012.8612.8612.8012.6812.5012.2611.9611.6011.1910.7110.179.57
20611.2111.3412.1713.7313.7913.7913.7313.6113.4313.1912.8912.5312.1211.6411.1010.50

Mexican-American Predicted Values – FVC Females

  Age
Height in cm 8101520253035404550556065707580
1141.211.361.741.951.911.861.801.731.641.541.431.311.181.040.880.71
1221.471.621.992.212.172.122.061.981.901.801.691.571.441.291.140.97
1301.741.892.272.482.442.392.332.262.172.071.961.841.711.571.411.24
1372.032.182.552.772.732.682.622.542.462.362.252.132.001.851.701.53
1452.342.492.863.073.042.992.922.852.772.672.562.442.312.162.001.84
1522.662.813.183.403.363.313.253.173.092.992.882.762.632.482.332.16
1603.003.153.523.743.703.653.593.513.433.333.223.102.972.822.672.50
1683.353.503.884.094.054.003.943.873.783.693.583.463.323.183.022.85
1753.733.884.254.464.434.384.314.244.164.063.953.833.703.553.393.23
1834.114.264.644.854.814.764.704.634.544.454.344.224.083.943.783.61
1914.524.675.045.265.225.175.115.034.954.854.744.624.494.344.194.02
1984.945.095.475.685.645.595.535.465.375.275.165.044.914.774.614.44
2065.385.535.906.126.086.035.975.895.815.715.605.485.355.205.054.88

Mexican-American Predicted Values – FEV1 Females

Age
Height in cm8101520253035404550556065707580
1221.361.431.752.292.142.001.851.701.561.411.271.120.970.830.680.53
1301.651.722.042.582.432.292.141.991.851.701.551.411.261.120.970.82
1371.952.022.352.892.742.592.452.302.152.011.861.721.571.421.281.13
1452.282.352.673.213.062.922.772.632.482.332.192.041.891.751.601.45
1522.622.693.013.553.413.263.112.972.822.672.532.382.242.091.941.80
1602.983.053.373.913.773.623.473.333.183.032.892.742.592.452.302.16
1683.363.433.754.294.144.003.853.703.563.413.263.122.972.832.682.53
1753.753.824.154.684.544.394.254.103.953.813.663.513.373.223.072.93
1834.164.234.565.104.954.804.664.514.364.224.073.933.783.633.493.34
1914.594.664.995.535.385.235.094.944.794.654.504.364.214.063.923.77
1985.045.115.445.975.835.685.535.395.245.104.954.804.664.514.364.22
2065.515.585.906.446.296.156.005.855.715.565.415.275.124.974.834.68

Mexican-American Predicted Values – FEV1/FVC Ratio Females

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.910.900.890.880.870.860.850.830.820.810.800.790.780.770.760.74

Mexican-American Predicted Values – PEF Females

  Age
Height in cm 8101520253035404550556065707580
1142.603.083.803.974.044.074.053.973.853.673.443.162.832.452.021.53
1223.003.484.204.374.444.474.454.374.254.073.843.563.232.852.421.93
1303.433.904.634.794.874.904.874.804.674.504.273.993.663.272.842.36
1373.884.355.085.245.325.355.325.255.124.954.724.444.113.733.292.81
1454.354.835.555.725.805.835.805.735.605.425.204.924.594.203.773.29
1524.865.336.066.226.306.336.306.236.105.935.705.425.094.714.273.79
1605.395.866.596.756.836.866.836.766.636.456.235.955.625.234.804.32
1685.946.427.147.317.387.417.397.317.197.016.786.506.175.795.364.87
1756.527.007.727.897.967.997.977.897.777.597.367.086.756.375.945.45
1837.137.608.338.498.578.608.578.508.378.207.977.697.366.986.546.06
1917.768.238.969.129.209.239.219.139.008.838.608.327.997.617.176.69
1988.428.899.629.789.869.899.869.799.669.489.268.988.658.267.837.35
2069.109.5710.3010.4610.5410.5710.5510.4710.3510.179.949.669.338.958.518.03

Mexican-American Lower Limit of Normality – FVC Males

Age
Height in cm8101520253035404550556065707580
1221.121.171.522.202.122.021.921.801.681.551.411.261.100.940.760.57
1301.411.451.802.492.402.312.202.091.971.841.701.551.391.221.050.86
1371.711.762.112.792.702.612.512.392.272.142.001.851.691.531.351.16
1452.032.082.433.113.022.932.832.712.592.462.322.172.011.851.671.48
1522.372.412.763.453.363.273.163.052.932.802.662.512.352.182.011.82
1602.722.773.123.803.723.623.523.413.283.153.012.862.702.542.362.18
1683.093.143.494.174.093.993.893.783.663.523.383.243.082.912.732.55
1753.483.533.884.564.484.384.284.174.043.913.773.623.473.303.122.94
1833.893.944.294.974.884.794.694.574.454.324.184.033.873.713.533.34
1914.314.364.715.395.315.215.115.004.884.744.604.464.304.133.953.77
1984.754.805.155.845.755.655.555.445.325.195.054.904.744.574.394.21
2065.215.265.616.296.216.116.015.905.785.645.505.355.205.034.854.67

Mexican-American Lower Limit of Normality – FEV1 Males

  Age
Height in cm 8101520253035404550556065707580
1221.001.071.391.931.791.641.491.351.201.050.910.760.620.470.320.18
1301.241.311.642.182.031.881.741.591.441.301.151.000.860.710.570.42
1371.501.571.902.432.292.142.001.851.701.561.411.261.120.970.820.68
1451.781.842.172.712.562.412.272.121.981.831.681.541.391.241.100.95
1522.062.132.462.992.852.702.562.412.262.121.971.821.681.531.381.24
1602.362.432.763.303.153.002.862.712.572.422.272.131.981.831.691.54
1682.682.753.083.613.473.323.173.032.882.742.592.442.302.152.001.86
1753.013.083.413.953.803.653.513.363.213.072.922.772.632.482.342.19
1833.363.433.754.294.154.003.853.713.563.413.273.122.972.832.682.54
1913.723.794.124.654.514.364.214.073.923.783.633.483.343.193.042.90
1984.104.174.495.034.884.744.594.444.304.154.013.863.713.573.423.27
2064.494.564.885.425.275.134.984.844.694.544.404.254.103.963.813.66

Mexican-American Lower Limit of Normality – FEV1/FVC Ratio Males

FEV1/FVC ratio is not height related, only age.

 Age
 8101520253035404550556065707580
Ratio0.790.790.780.770.750.740.730.720.710.700.690.680.670.660.650.63

Mexican-American Lower Limit of Normality – PEF Males

Age
Height in cm8101520253035404550556065707580
1221.651.782.614.174.234.234.174.053.873.633.332.972.562.081.540.94
1302.062.193.034.584.644.644.584.474.294.053.753.392.972.501.961.36
1372.512.643.475.035.095.095.034.914.734.494.193.833.422.942.401.80
1452.983.113.945.495.555.565.505.385.204.964.664.303.883.412.872.27
1523.473.604.435.996.056.055.995.875.695.455.154.804.383.903.362.77
1603.994.124.956.516.576.576.516.396.215.975.675.324.904.423.883.29
1684.534.665.497.057.117.117.056.936.756.526.225.865.444.964.433.83
1755.105.236.067.627.687.687.627.507.327.096.796.436.015.535.004.40
1835.705.836.668.228.288.288.228.107.927.687.387.026.616.135.594.99
1916.326.457.288.848.908.908.848.728.548.308.007.647.236.756.215.61
1986.967.097.929.489.549.549.489.369.188.958.658.297.877.396.866.26
2067.637.768.6010.1510.2110.2110.1510.039.869.629.328.968.548.077.536.93

Mexican-American Lower Limit of Normality – FVC Females

Age
Height in cm8101520253035404550556065707580
1140.861.011.391.601.571.521.451.381.291.201.090.970.830.690.530.37
1221.071.221.601.811.771.721.661.591.501.411.301.181.040.900.740.57
1301.301.451.822.032.001.951.881.811.731.631.521.401.271.120.960.80
1371.531.682.062.272.232.182.122.051.961.861.761.631.501.361.201.03
1451.781.932.312.522.482.432.372.302.212.112.001.881.751.611.451.28
1522.042.192.572.782.742.692.632.562.472.382.272.152.011.871.711.54
1602.322.472.843.063.022.972.912.832.752.652.542.422.292.141.991.82
1682.612.763.133.353.313.263.203.123.042.942.832.712.582.432.282.11
1752.913.063.443.653.613.563.503.433.343.253.143.022.882.742.582.41
1833.233.383.753.973.933.883.823.743.663.563.453.333.203.052.902.73
1913.563.714.084.304.264.214.154.073.993.893.783.663.533.383.233.06
1983.904.054.434.644.604.554.494.424.334.244.134.013.873.733.573.40
2064.264.414.785.004.964.914.854.774.694.594.484.364.234.083.933.76

Mexican-American Lower Limit of Normality – FEV1 Females

Age
Height in cm8101520253035404550556065707580
1140.850.981.301.461.381.291.191.090.990.870.760.630.500.370.230.08
1221.031.151.481.641.561.471.371.271.161.050.930.810.680.540.400.26
1301.211.341.671.831.751.661.561.461.351.241.121.000.870.730.590.45
1371.421.551.872.031.951.861.761.661.551.441.321.201.070.940.790.65
1451.631.762.082.252.162.071.981.871.771.651.541.411.281.151.010.86
1521.851.982.312.472.382.292.202.101.991.881.761.641.511.371.231.08
1602.092.222.542.702.622.532.432.332.232.112.001.871.741.611.471.32
1682.332.462.792.952.872.782.682.582.472.362.242.121.991.851.711.57
1752.592.723.053.213.133.042.942.842.732.622.502.382.252.111.971.83
1832.862.993.323.483.403.313.213.113.002.892.772.652.522.382.242.10
1913.143.273.603.763.683.593.493.393.283.173.052.932.802.662.522.38
1983.443.573.894.053.973.883.783.683.583.463.353.223.092.962.822.67
2063.743.874.204.364.274.184.093.993.883.773.653.533.403.263.122.97

Mexican-American Lower Limit of Normality – FEV1/FVC Ratio Females

FEV1/FVC ratio is not height related, only age.

Age
8101520253035404550556065707580
Ratio0.810.810.800.790.770.760.750.740.730.720.710.700.680.670.660.65

Mexican-American Lower Limit of Normality – PEF Females

  Age
Height in cm 8101520253035404550556065707580
1221.651.782.614.174.234.234.174.053.873.633.332.972.562.081.540.94
1302.062.193.034.584.644.644.584.474.294.053.753.392.972.501.961.36
1372.512.643.475.035.095.095.034.914.734.494.193.833.422.942.401.80
1452.983.113.945.495.555.565.505.385.204.964.664.303.883.412.872.27
1523.473.604.435.996.056.055.995.875.695.455.154.804.383.903.362.77
1603.994.124.956.516.576.576.516.396.215.975.675.324.904.423.883.29
1684.534.665.497.057.117.117.056.936.756.526.225.865.444.964.433.83
1755.105.236.067.627.687.687.627.507.327.096.796.436.015.535.004.40
1835.705.836.668.228.288.288.228.107.927.687.387.026.616.135.594.99
1916.326.457.288.848.908.908.848.728.548.308.007.647.236.756.215.61
1986.967.097.929.489.549.549.489.369.188.958.658.297.877.396.866.26
2067.637.768.6010.1510.2110.2110.1510.039.869.629.328.968.548.077.536.93

References

Hankinson JL, Odencrantz JR, Fedan KB. Spirometric reference values from a sample of the general U.S. population. Am J Respir Crit Care Med 1999;159:179–187.

American Thoracic Society. Lung function testing: selection of reference values and interpretative strategies. Am Rev Respir Dis 1991;144:1202–1218.