Table 1 Baseline characteristics of study participants

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)