Table 6. Relationship between individual and partner risk factors and HIV seropositivity among adolescent girls attending secondary school, Siaya County, western Kenya, 2017–2018.
| Among full cohort of 3,998 girls | RR (95% CI) | P value | aRR* (95% CI) | P value |
|---|---|---|---|---|
| Age (year) | 1.28 (1.13–1.45) | <0.001 | 1.34 (1.18–1.53) | <0.001 |
| BMI | ||||
| Underweight (BMI <18.2) | 3.63 (1.20–10.99) | 0.022 | 4.21 (1.36–13.1) | 0.013 |
| Normal (BMI 18.2–25) | 1.87 (0.85–4.10) | 0.120 | 2.03 (0.90–4.59) | 0.087 |
| Overweight (BMI >25) | ref | ref | ref | ref |
| Orphan (no living parent) | 3.95 (1.74–8.95) | <0.001 | 2.81 (1.18–6.71) | 0.020 |
| Period stopped activities | 0.47 (0.24–0.91) | 0.026 | 0.43 (0.21–0.85) | 0.016 |
| Period severity | ||||
| Heavy | 0.92 (0.51–1.68) | 0.793 | 1.07 (0.56–2.04) | 0.837 |
| Normal | ref | ref | ref | ref |
| Light | 2.60 (1.37–4.90) | 0.003 | 2.42 (1.22–4.79) | 0.012 |
| Period duration | ||||
| <3 days | 2.71 (1.18–6.23) | 0.019 | 2.81 (1.16–6.82) | 0.023 |
| 3–5 days | ref | ref | ref | ref |
| >5 days | 0.72 (0.32–1.61) | 0.424 | 0.68 (0.28–1.65) | 0.396 |
aRR, adjusted risk ratio; BMI, body mass index; CI, confidence interval; RR: Risk ratio.
Result considered statistically significant at p < 0.05.
*aRRs are adjusted for age, BMI, orphanhood, reporting that their menstrual period stopped them from completing daily tasks, and the severity and duration of menstrual period.