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Table 1 Baseline characteristics of study participants

From: Differential effects of vitamin D2 and D3 supplements on 25-hydroxyvitamin D level are dose, sex, and time dependent: a randomized controlled trial

  D2
daily
D3
daily
D2/D3 daily D2
2-weekly
D3
2-weekly
D2
4-weekly
D3
4-weekly
Placebo
daily
Number 28 31 33 26 30 27 25 29
35 34 35 32 35 33 32 33
Age, year 34.4 (10.2) 34.5 (9.7) 33.1 (6.8) 31.5 (6.1) 33.5 (10.5) 32.3 (7.2) 32.6 (8.5) 32.8 (7.3)
34.7 (9.4) 33.7 (9.7) 32.8 (7.1) 31.5 (7.8) 33.4 (10.5) 33.5 (8.0) 31.4 (8.1) 32.4 (7.3)
Male, number (%) 13 (46) 13 (42) 15 (45) 12 (46) 13 (43) 11 (41) 10 (40) 13 (45)
14 (40) 14 (41) 14 (40) 14 (44) 14 (40) 13 (39) 14 (44) 13 (39)
BMI, kg/m2 24.6 (2.9) 26.1 (5.1) 26.2 (3.8) 24.1 (4.0) 24.8 (5.1) 25.3 (5.2) 25.6 (3.4) 23.9 (4.3)
25.3 (3.3) 25.9 (4.9) 26.0 (3.6) 24.3 (3.9) 24.8 (4.7) 25.4 (4.8) 25.9 (3.7) 24.1 (4.4)
Sun exposure, hour/week 2.0 (2.2) 2.2 (2.1) 2.3 (2.3) 2.3 (2.7) 3.0 (2.9) 2.5 (2.5) 3.2 (3.1) 2.3 (2.3)
2.3 (2.6) 2.2 (2.0) 2.3 (2.3) 2.7 (3.0) 2.8 (2.7) 2.4 (2.5) 3.1 (3.0) 2.2 (2.2)
Serum 25(OH)D, nmol/L 39.5 (12.2) 41.3 (10.7) 40.7 (14.5) 38.2 (10.5) 39.5 (12.5) 40.9 (12.0) 40.9 (12.2) 42.9 (10.2)
38.8 (12.1) 40.9 (10.3) 40.8 (14.5) 37.6 (10.5) 39.4 (13.0) 39.5 (12.7) 39.4 (12.3) 41.8 (10.3)
Serum 25(OH)D3, nmol/L 39.1 (12.1) 41.3 (10.7) 38.0 (12.1) 38.2 (10.5) 38.0 (11.5) 40.4 (12.2) 40.9 (12.2) 42.9(10.2)
37.2 (12.3) 40.3 (10.9) 37.8 (12.3) 37.6 (10.5) 38.2 (12.2) 38.7 (12.8) 39.4 (12.3) 41.8 (10.3)
Urinary calcium/creatinine, mol/mol 0.30 (0.19) 0.39 (0.21) 0.32 (0.22) 0.33 (0.19) 0.37 (0.26) 0.42 (0.24) 0.32 (0.20) 0.40 (0.24)
0.34 (0.23) 0.39 (0.20) 0.29 (0.17) 0.32 (0.18) 0.37 (0.26) 0.38 (0.24) 0.31 (0.20) 0.38 (0.23)
Urinary phosphate, creatinine, mol/mol 1.69 (0.80) 1.83 (1.02) 1.57 (0.91) 1.70 (0.67) 1.75 (0.76) 2.08 (1.74) 1.47 (0.78) 1.79 (1.06)
1.66 (0.83) 1.79 (1.01) 1.53 (0.78) 1.62 (0.66) 1.81 (0.74) 2.00 (1.59) 1.60 (1.18) 1.68 (1.04)
  1. Data are means (SD), unless indicated otherwise. The first raw of each entry describes the 229 participants who completed the study; the second raw describes the entire cohort of 269 participants. BMI, body mass index. 25(OH)D, total 25-hydroxyvitamin D. 25(OH)D3, 25-hydroxyvitamin D3