Table 1 Descriptive characteristics of the study population
Characteristics | Women (n = 90) Median (P5–P95) | Men (n = 41) Median (P5–P95) | P-valuea) |
|---|---|---|---|
Age (y) | 75.5 (69.0–86.5) | 76.0 (70.0–84.8) | 0.546 |
Height (cm) | 160.0 (150.5–168.7) | 174.5 (161.6–183.5) | < 0.0001 |
Weight (kg) | 67.8 (52.9–85.2) | 78.5 (63.7–98.0) | < 0.0001 |
Body mass index (kg/m²) | 26.3 (20.8–34.5) | 26.4 (22.9–32.3) | 0.806 |
Waist circumference (cm) | 90.0 (71.6–108.4) | 100.0 (84.4–113.8) | < 0.0001 |
Hip circumference (cm) | 106.0 (91.6–122.5) | 104.0 (95.2–116.8) | 0.170 |
Waist-to-hip ratio | 0.85 (0.76–0.93) | 0.96 (0.86–1.06) | < 0.0001 |
Fat-free mass (kg) | 39.5 (34.5–45.1) | 55.3 (48.6–62.6) | < 0.0001 |
Total body fat (kg) | 28.1 (17.2–41.6) | 24.2 (14.4–36.0) | 0.001 |
Total body fat (%) | 41.9 (32.4–50.1) | 29.0 (21.5–37.9) | < 0.0001 |
25(OH)D3 (nmol/L) | 59.4 (39.9–90.6) | 67.5 (39.7–88.9) | 0.096 |
iPTH (pmol/L) | 4.5 (2.3–7.9) | 4.1 (2.1–8.3) | 0.360 |
Vitamin D intake (μg/d) | 2.3 (0.3–10.1) | 3.5 (1.0–11.3) | 0.078 |
Calcium intake (g/d) | 1.0 (0.5–1.8) | 1.0 (0.6–1.6) | 0.953 |
Alcohol intake (g/d) | 2.3 (0.0–16.1) | 5.1 (0.0–30.0) | 0.018 |
Sun exposure (min/d) | 120.0 (40.0–360.0) | 150.0 (22.5–396.0) | 0.130 |
Physical activity level | 1.7 (1.5–2.0) | 1.7 (1.4–1.9) | 0.254 |
Current or ex-smokers, n (%) | 20 (22.2) | 29 (70.7) | < 0.0001 |
Vitamin D supplement users, n (%) | 15 (16.7) | 2 (4.9) | 0.091 |