Overview :

The Forced Expiratory Volume in 1 second (FEV1) is the volume of air expired in the first second. This is an important predictor of outcomes in patients with COPD.

predicted FEV1 in liters for males (Boren, 1966) =

= (0.094 * (height in inches))  - (0.028 * (age in years)) - 1.59 =

FEV1 in liters for White males 15-79 years (Cherniack, 1972) =

= (0.09107 * (height in inches)) - (0.0232 * (age in years)) - 1.50723

FEV1 in liters for White females 15-79 years (Cherniack, 1972) =

= (0.06029 * (height in inches)) - (0.01936 * (age in years)) - 0.18693

FEV1 in liters for Hispanic males 25-80 years (Coultas, 1988) =

= (3.7708 * (height in meters)) - (0.0288 * (age in years)) - 1.6205

FEV1 in liters for Hispanic females 25-80 years (Coultas, 1988) =

= (3.2138 * (height in meters)) - (0.0243 * (age in years)) - 1.4184

FEV1 in liters for White males 15-91 years (Crapo, 1981) =

= (0.0414 * (height in cm)) - (0.0244 * (age in years)) - 2.190

FEV1 in liters White females 15-84 years (Crapo, 1981)  =

=  (0.0342 * (height in cm)) - (0.0255 * (age in years)) - 1.578

FEV1 in liters for Hispanic males 25-75 years (Crapo, 1990) =

= (0.0451 * (height in cm)) - (0.0301 * (age in years)) - 2.7721

FEV1 in liters Hispanic females 20-80 years (Crapo, 1990)  =

=  (0.0378 * (height in cm)) - (0.0189 * (age in years)) - (0.0048 * (weight in kilograms)) - 2.1371

FEV1 in liters for Chinese males 20-66 years (Da Costa, 1971) =

= (0.0267 * (height in cm)) - (0.0189 * (age in years)) - 0.774

FEV1 in liters for Chinese females 20-66 years (Da Costa, 1971) =

= (0.017 * (height in cm)) - (0.0175 * (age in years))+ 0.232

FEV1 in liters for White males 65-85 years (Enright, 1993) =

= (0.0378 * (height in cm)) - (0.0271 * (age in years)) - 1.73

FEV1 in liters for White females 65-85 years (Enright, 1993) =

= (0.0281 * (height in cm)) - (0.0325 * (age in years)) - 0.09

FEV1 in liters in adult males 20 - 65 years of age (Grimby, 1963) =

= (3.44 * (height in meters)) - (0.033* (age in years)) - 1.00

FEV1 in liters in adult females 18 - 72 years of age (Grimby, 1963) =

= (2.67 * (height in meters)) - (0.028* (age in years)) - 0.54

FEV1 in liters for White males 25-85 years (Knudson, 1983) =

= (0.0665 * (height in cm)) - (0.0292 * (age in years)) - 6.5147

FEV1 in liters for White females 20-88 years (Knudson, 1983) =

= (0.0309 * (height in cm)) - (0.0201 * (age in years)) - 1.405

FEV1 in liters for males 18-66 years (Kory, 1961) =

= (0.037 * (height in cm)) - (0.028 * (age in years)) - 1.59

FEV1 in liters for White males 20-84 years (Morris, 1971) =

= (0.092 * (height in inches)) - (0.032 * (age in years)) - 1.26

FEV1  in liters for White females 20-84 years (Morris, 1971) =

= (0.089 * (height in inches)) - (0.025 * (age in years)) - 1.932

FEV1 in liters for Black males 15-74 years years (Mustafa, 1977) =

= (0.046 * (height in cm) - (0.022 * (age in years)) - 3.864

FEV1 in liters for White males 18-86 years years (Roberts, 1991) =

= (3.961 * (height in meters)) - (0.033* (age in years)) - 1.558

FEV1 in liters for White females 18-86 years (Roberts, 1991) =

= (3.321 * (height in meters)) - (0.025* (age in years)) - 1.394

FEV1 in liters for Black males 20-92 years years (Stinson, 1981) =

= (0.096 * (height in inches)) - (0.021 * (age in years)) - 2.51

FEV1 in liters for Black females 20-92 years (Stinson, 1981) =

= (0.062 * (height in inches)) - (0.017 * (age in years)) - 0.951

Interpretation:

• The FEV1 reflects the severity of pulmonary impairment in obstruction.

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