Table 3. Univariable logistic regression of risk factors of epithelial ovarian cancer.
| Variables | OR | 95% CI | p-value |
|---|---|---|---|
| Age group (years) | |||
| <50 | 1.00 | Reference | - |
| ≥50 | 1.41 | 0.55–3.62 | 0.47 |
| BMI (kg/m2) | |||
| <25 (underweight/normal) | 1.00 | Reference | - |
| 25-29 (overweight) | 0.73 | 0.24–2.18 | 0.57 |
| ≥30 (Obese) | 0.63 | 0.19–2.13 | 0.46 |
| Parity | |||
| 0 | 1.00 | Reference | - |
| 1–4 | 0.87 | 0.23–3.30 | 0.84 |
| >4 | 0.65 | 0.14–3.04 | 0.58 |
| Family history of cancer | |||
| No | 1.00 | Reference | - |
| Yes | 4.89 | 0.96–24.97 | 0.06 |
| Alcohol use | |||
| No | 1.00 | Reference | - |
| Yes | 3.19 | 0.32–32.24 | 0.33 |
| Educational qualification | |||
| At least primary education | 1.00 | Reference | - |
| At least secondary education | 0.56 | 0.16–1.93 | 0.36 |
| Skin colour | |||
| Light | 1.00 | Reference | - |
| Black | 0.58 | 0.14–2.37 | 0.45 |
| Dark brown | 0.44 | 0.14–1.38 | 0.16 |
| Coexisting morbidity | |||
| No | 1.00 | Reference | - |
| Yes | 2.30 | 0.62–8.48 | 0.21 |
| Menopausal status | |||
| Premenopausal | 1.00 | Reference | - |
| Postmenopausal | 1.27 | 0.49–3.31 | 0.63 |
| Vitamin D category | |||
| Normal (≥75 nmol/l) | 1.00 | Reference | - |
| Deficiency (<75 nmol/l) | 2.75 | 0.84–9.00 | 0.09 |
| Serum vitamin D levels per 10 nmol/l | 0.96 | 0.93–0.99 | 0.04 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by the square of height in metres); OR, crude odds ratio.