Table 5.

Multiple regression model predicting subject's nutritional status.

Independent variable	t	B	P
BMI Model (R 2 = 0.190, F = 8.451, P < 0.001)
PEF (L/s)	2.450	0.644	0.001
Plasma vitamin A (μmol/L)	2.845	1.856	0.005
Handgrip (kg)	2.616	0.197	0.010
FFMI Model (R 2 = 0.081, F = 5.309, P = 0.007)
FEV1 (L)	2.436	1.297	0.017
Plasma vitamin A (μmol/L)	2.152	0.948	0.034

P < 0.05 significant using multiple linear regression analysis 

Adjusted for BMI: income, handgrip strength, vitamin E intake, FEV₁% predicted, FEV₁, PEF, PEF% predicted, and plasma vitamin A.  

Adjusted for FFMI: handgrip strength, FEV₁% predicted, FEV₁, PEF, PEF% predicted, and plasma vitamin A.