. 2022 Jul 25;9:807344. doi: 10.3389/fnut.2022.807344

TABLE 3.

Association of vitamin D concentrations with incident psoriasis in different BMI categories.

Vitamin D concentration, nmol/L	Normal (BMI < 25)				Overweight (25 < BMI < 30)				Obesity (BMI > 30)
	N	Person-years	HR (95%CI)	p	N	Person-years	HR (95% CI)	p	N	Person-years	HR (95% CI)	p
Per SD in concentration	744	1,551,468	0.945 (0.880–1.015)	0.119	1,234	1,978,052	0.951 (0.898–1.006)	0.082	869	1,127,639	0.895 (0.838–0.956)	0.001
Quartiles
12.7–32.6	181	330,338	Ref		303	455,722	Ref		326	367,308	Ref
32.6–46.8	152	352,207	0.802 (0.646–0.995)	0.045	320	498,491	0.963 (0.823–1.128)	0.643	228	316,920	0.826 (0.697–0.978)	0.027
46.8–62.0	199	391,839	0.941 (0.768–1.153)	0.559	309	516,263	0.887 (0.757–1.041)	0.142	187	257,300	0.841 (0.702–1.007)	0.059
62.0–104.0	212	477,084	0.812 (0.664–0.992)	0.042	302	507,576	0.869 (0.740–1.020)	0.086	128	186,111	0.789 (0.643–0.968)	0.023
			p_trend = 0.091				p_trend = 0.261				p_trend = 0.045
Category
Deficient (<25)	96	168,700	Ref		161	226,571	Ref		202	196,235	Ref
Insufficient (25∼50)	274	596,057	0.833 (0.659–1.052)	0.125	531	843,323	0.887 (0.743–1.059)	0.184	401	551,175	0.724 (0.611–0.858)	<0.001
Optimal (> 50)	374	786,711	0.853 (0.680–1.071)	0.170	542	908,158	0.823 (0.689–0.983)	0.031	266	380,229	0.701 (0.583–0.843)	<0.001
			p_trend = 0.294				p_trend = 0.086				p_trend < 0.001

All models were adjusted for sex, age, income, education, smoking status, and vitamin D supplements.