From: Estimation of the cutoff value of vitamin D: the Dong-gu study
Male | Female | Total | P values | |
---|---|---|---|---|
N (%) | 3,545 (40.0) | 5,312 (60.0) | 8,857 (100.0) | - |
Age (years) | 66.1 ± 8.0 | 64.4 ± 8.2 | 65.1 ± 8.1 | <0.001 |
BMI (kg/m2) | 23.9 ± 2.8 | 24.6 ± 3.0 | 24.3 ± 2.9 | <0.001 |
Month of blood collection | 0.004 | |||
April | 762 (21.5) | 1,010 (19.0) | 1,772 (20.0) | |
May | 1,132 (31.9) | 1,749 (32.9) | 2,881 (32.5) | |
June | 1,079 (30.4) | 1,580 (29.7) | 2,659 (30.0) | |
July | 572 (16.1) | 973 (18.3) | 1,545 (17.4) | |
Smoking (%) | 865 (24.4) | 99 (1.9) | 964 (10.9) | <0.001 |
Alcohol intake (%) | 2,416 (68.2) | 1,690 (31.8) | 4,106 (46.4) | <0.001 |
Physically activea (%) | 920 (26.8) | 667 (13.0) | 1,587 (18.5) | <0.001 |
PTH (pg/ml) | 40.6 ± 17.7 | 44.0 ± 19.4 | 42.7 ± 18.8 | <0.001 |
25(OH)D (ng/ml) | 19.2 ± 5.9 | 15.0 ± 5.1 | 16.7 ± 5.8 | <0.001 |
Vitamin D deficientb (%) | 2,120 (59.8) | 4,595 (86.5) | 6,715 (75.8) | <0.001 |
Postmenopause (%) | 5,081 (96.2) |