Equations for Predicting Forced Vital Capacity (FVC) in Pediatric Patients

NOTE: Quanjer et al provides many additional equations for FVC (page 201s).

 

Linear Equations Based on Height

 

FVC in liters for males 5-18 years old and 42-59 inches tall (Dickman) =

= (0.094 * (height in inches)) - 3.042

 

FVC in liters for males 5-18 years old and 60-78 inches tall (Dickman) =

= (0.174 * (age in years)) + (0.164 * (height in inches)) - 9.425

 

FVC in liters for females 5-18 years old and 42-59 inches tall (Dickman) =

= (0.077 * (height in inches)) - 2.371

 

FVC in liters for females 5-18 years old and 60-78 inches tall (Dickman) =

= (0.102 * (age in years)) + (0.117 * (height in inches)) - 5.869

 

FVC in liters for boys 5 to 18 years (Godfrey) =

= (0.06 * (height in cm)) - 5.71

 

FVC in liters for girls 5 to 18 years (Godfrey) =

= (0.049 * (height in cm)) - 4.42

 

FVC in liters for boys 4-19 years < 162.6 cm (Rosenthal) =

= (0.043 * (height in cm)) - 3.619

 

FVC in liters for boys 4-19 years >= 162.6 cm (Rosenthal) =

= (0.068 * (height in cm)) - 7.038

 

FVC in liters for girls 4-19 years < 152.6 cm (Rosenthal) =

= (0.030 * (height in cm)) - 3.311

 

FVC in liters  for girls 4-19 years >= 152.6 cm (Rosenthal) =

= (0.045 * (height in cm)) - 3.881

 

Exponent of Height

 

FVC in liters for 7 to 19 year olds (Hsu et al) =

= A * 10^(-3) * ((height in cm)^B)

 

Boys 7 - 19 years	A	B
black	1.07	2.93
hispanic	1.06	2.97
white	0.358	3.18

 

 

Girls 7 - 19 years	A	B
black	0.834	2.98
hispanic	1.25	2.92
white	2.57	2.78

 

FVC in liters for males (Polgar and Promadhat) =

= (0.0000044 * ((height in cm)^2.67))

 

FVC in liters for females (Polgar and Promadhat) =

= (0.0000033 * ((height in cm)^2.72))

 

Natural Logarithm

 

FVC in liters (Wang et al) =

= EXP((B * (LN(height in meters))) + A)

 

Boys - Age in Years	A	B
6	-0.024	2.470
7	-0.018	2.489
8	0.005	2.443
9	0.017	2.426
10	0.030	2.407
11	0.009	2.468
12	-0.061	2.649
13	-0.175	2.924
14	-0.219	3.060
15	-0.079	2.859
16	0.104	2.591
17	0.253	2.374
18	0.296	2.316

 

 

Girls - Age in Years	A	B
6	-0.013	2.007
7	-0.062	2.385
8	-0.055	2.381
9	-0.039	2.351
10	-0.068	2.458
11	-0.120	2.617
12	-0.174	2.776
13	-0.061	2.576
14	0.139	2.208
15	0.210	2.099
16	0.226	2.097
17	0.214	2.146
18	0.195	2.179