Table 2.

Comparison of serum vitamin D concentrations based on different sun exposure levels.

Sun exposure (minutes/day)		MS patients		Controls
		25(OH) D serum concentrations (nmol/L)	Number	25(OH) D serum concentrations (nmol/L)	Number
Less than 30		18.4 ± 16	20	12.6 ± 5.9	22
Between 30 and 60		24.2 ± 29.2	5	21 ± 7.7 a	10
Between 60 and 120		26.6 ± 13.2	10	43.6 ± 14.1 a,b	5
More than 120		23.1 ± 7.2	2	—	0

^aSignificant differences between those of <30 minutes/day of sun exposure (ANOVA, P < 0.05).

^bSignificant differences between those between 30 and 60 minutes/day of sun exposure (ANOVA, P < 0.05).