Table 2.

Binary logistic regression, unadjusted and adjusted results, with MDD/controls as dependent variable.

Variables	Unadjusted results			Adjusted resultsa			Adjusted resultsb
	OR	p-value	R2	OR	p-value	R2	OR	p-value	R2
25(OH)D	0.849	0.02*	0.036	0.840	<0.05*	0.230	0.828	0.02*	0.179
BMI	1.142	<0.01**	0.065	1.106	0.07		1.109	0.05*
Smoking	0.314	0.06	0.031	0.289	0.06		N/A	N/A
Season	0.986	0.07	0.024	1.420	0.38		N/A	N/A
Age	1.017	0.22	0.011	1.003	0.82		N/A	N/A
Sex	1.590	0.23	0.011	1.665	0.23		N/A	N/A
Somatic illness	0.263	<0.01**	0.096	0.263	<0.01**		0.258	<0.01**

* Significant at the 0.05 level (2-tailed).

** Significant at the 0.01 level (2-tailed).

Acronyms: major depressive disorder (MDD), body mass index (BMI), odds ratio (OR).

^aModel I: All variables possibly affecting dependent variable; BMI, smoking, sampling season, age, sex, somatic illness.

^bModel II: Only significant variables, or close to significant, are included in the model.