Table III.

Effect of Body Mass Index (BMI) on respiratory parameters using generalized linear model (GLM).

Dependent Variables	Independent Variable	Beta	Standard Error	p-value	95% Confidence Interval
					Lower Bound	Upper Bound
FVC (L)	BMI	0.009	0.007	0.206	-0.005	0.024
FEV1 (L)	BMI	-0.036	0.01	<0.01*	-0.055	-0.017
FEV1 / FVC (%)	BMI	-0.354	0.096	<0.01*	-0.543	-0.165
Average VT (L)	BMI	0.022	0.006	<0.01*	0.01	0.035
IRV	BMI	0.031	0.005	<0.01*	0.021	0.041
ERV	BMI	-0.003	0.003	0.257	-0.009	0.002
IC	BMI	0.053	0.009	<0.01*	0.036	0.071
VC	BMI	0.05	0.01	<0.01*	0.031	0.069
TLC	BMI	0.079	0.012	<0.01*	0.056	0.102
FRC	BMI	0.026	0.005	<0.01*	0.017	0.035

^*p<0.05 was considered significant.