Table 1 Basic characteristics of participants
Basic characteristics | OP population | Non-OP population | P |
|---|---|---|---|
Number | 78 | 1122 | Â |
Gender |  |  |  < 0.001 |
 Male (n, %) | 11 (14.1) | 669 (59.6) |  |
 Female (n, %) | 67 (85.9) | 453 (40.4) |  |
Age (years) | 58.5 ± 6.4 | 50.6 ± 7.2 |  < 0.001 |
Smoking (n, %) | 7 (9.0) | 299 (26.6) |  < 0.001 |
Drinking (n, %) | 14 (17.9) | 471 (42.0) |  < 0.001 |
BMI (kg/m2) | 22.8 ± 3.2 | 24.5 ± 3.0 |  < 0.001 |
Diabetes (n, %) | 10 (12.8) | 124 (11.1) | 0.58 |
Hypertension (n, %) | 35 (44.9) | 348 (31.0) | 0.016 |
Activity level (h/week) | 2.8 ± 2.7 | 2.1 ± 2.9 | 0.039 |
Dietary calcium intake (mg/day) | 442.6 ± 180.0 | 488.3 ± 195.0 | 0.045 |
Dietary fiber intake (g/day) | 15.4 ± 10.8 | 18.6 ± 12.2 | 0.024 |
Dietary energy intake (Kcal/day) | 1480.5 ± 650.0 | 1630.8 ± 600.0 | 0.034 |
Dietary selenium intake (μg/day) | 39.2 ± 19.7 | 45.5 ± 22.6 | 0.017 |