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Table 1 Characteristics presented in all women and separately by women of ethnic Swedish and immigrant origin

From: Evaluation of sun holiday, diet habits, origin and other factors as determinants of vitamin D status in Swedish primary health care patients: a cross-sectional study with regression analysis of ethnic Swedish and immigrant women

Characteristic All women (n = 61) Native women (n = 30) Immigrant women (n = 31) p*)
Age (years)1 39 (29-51) 42 (31-56) 35 (29-49) 0.19
BMI (kg/m2)1 27 (22-32) 26 (22-32) 28 (24-32) 0.36
Current smoking (%)2 12 (20) 6 (20) 6 (19) 1.00
Sun holiday past year (%)2 13 (21) 8 (23) 6 (19) 0.76
Time since sun holiday (wks.)1 30 (26-38) 31 (17-32) 29 (28-38) 0.68
Observed wearing of veil (%)2 11 (18) 1 (3) 10 (32) 0.006
Use of sunscreen (%)2 41 (67) 19 (63) 22 (71) 0.52
Education >12 years (%)2 37 (61) 22 (73) 15 (48) 0.001
Skin types I-III (%)2 44 (72) 28 (93) 16 (52) 0.012
P-calcium (mmol/L)1 2.3 (2.3-2.4) 2.3 (2.3-2.4) 2.3 (2.3-2.4) 0.55
Vitamin D intake, food (μg/day)1 4.0 (2.5-5.7) 5.1 (4.0-6.4) 3.1 (2.0-4.4) 0.0008
Vitamin D intake, food + supplements (μg/day)1 4.0 (2.5-6.1) 5.6 (4.0-8.1) 3.1 (2.0-4.7) 0.0009
25(OH)D (nmol/L)1 34.0 (21.8-52.0) 51.5 (39.9-65.0) 22.2 (13.7-28.6) <0.0001
  1. Median (25th to 75th percentiles) and numbers (%) are presented.
  2. *) p-values refers to the difference between native and immigrant women.
  3. 1 = p-value calculated with Wilcoxon’s non-parametric test.
  4. 2 = p-value calculated with chi-square test.
  5. P-calcium = plasma concentration of calcium.
  6. 25(OH)D = plasma concentration of 25-OH-vitamin D.