Table 2. Distribution of serum 25-hydroxyvitamin D [25(OH)D] level among 3,450 Korean university students aged 18 to 29 yr, 2013 spring.

25(OH)D, ng/mL	Total (n=3,450)	Men (n=1,768)	Women (n=1,682)
<10.0	1,542 (44.7)	698 (39.5)	844 (50.2)
10.0-11.9	806 (23.4)	413 (23.4)	393 (23.4)
12.0-19.9	974 (28.2)	586 (33.1)	388 (23.1)
20.0-29.9	117 (3.5)	66 (3.7)	51 (3.0)
≥30.0	11 (0.3)	5 (0.3)	6 (0.4)

Numbers are presented as number (%).