Table 1 Descriptive statistics of the study sample (n = 926)

N ^a

419 (45)

507 (55)

0.004

Coastal community group^a

184 (50)

186 (50)

0.92

Inland community group^a

235 (42)

321 (58)

0.0003

Age, years^b

36.56 (17.56)

38.07 (17.61)

0.17

δ¹⁵N, ‰^b

8.80 (1.51)

9.13 (1.54)

0.0001

Parathyroid hormone, pg/mL^c

52.7 (24.21–114.84)

65.60 (27.83–154.61)

<0.0001

25(OH)D, ng/mL^c

34.57 (11.47–83.32)

33.96 (12.21–77.69)

0.56