Predicted Forced Expiratory Volume in 1 Second (FEV1)

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 (Mustafa, 1977) =

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

 

FEV1 in liters for White males 18-86 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 (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.

 

FEV1	Interpretation
> 80% predicted	normal
66-80% predicted	mild obstruction
50-65% predicted	moderate obstruction
< 50% predicted	severe obstruction