Table 3.

Cross-sectional multivariable association of 25(OH)D with baseline FEV₁ (mL) in the Offspring and Third Generation cohorts, combined (N = 5,034)

Model categorization of vitamin D:	β	SE	P
Continuous : Log-transformed 25(OH)D	45.2	15.5	0.004
Dichotomy 1: At risk of vitamin D deficiency (<12 ng/mL) vs. not	−46.7	26.7	0.08
Dichotomy 2: At risk of vitamin D inadequacy (<20 ng/mL) vs. not	−30.6	16.6	0.07

Adjusted for: baseline age, sex, height, smoking pattern, current smoking status, baseline pack-years, FHS cohort, baseline BMI, and month of blood draw; all coefficients show expected direction of effect

β beta coefficient, SE standard error, P P-value