BMC Public Health 2009, 9:310 http://www.biomedcentral.com/1471-2458/9/310 Table 1: Bivariate and age-adjusted distribution of underlying and proximate factors of HIV infection in young women by urban and rural residence (Continued) 1 partner 2 partners ≥ 3 partners 247 17.8 125 20 88 23.9 4.43 (2.31–8.53) 4.86 (2.31–10.2) 6.13 (2.82–13.3) 247 17.8 1.00 125 20 88 23.9 1.06 (0.61–1.86) 1.34 (0.73–2.43) 186 6.5 108 9.3 65 13.8 0.43 (0.17–1.07) 0.63 (0.24–1.66) 1.00 186 6.5 108 9..3 65 13..8 1.00 1.37 (0.56–3.31) 2.01 (0.79–5.12) (i) Categorization: i. Cluster educational levels: urban – low (9.0–10.5 years), middle (10.6–11.0 years), high (11.1–11.3 years); rural – low (4.0–5.3 years), middle (5.4– 6.5 years), high (6.6–9.5 years) ii. Cluster employment: urban – high (30–36%), middle (37–40%), low (41–46%); rural – high (36–46%), middle (47.61%), low (62–77%) iii. Individual level education: urban – low (grade 0 – 7), middle (grade 8 – 11), high (grade 12 and above); rural – low (grade 0 – 4), middle (grade 5 – 7) & high (grade 8 and above) (2) AOR = age-adjusted odd ratios (3) Significant results are in bold (p < 0.05) (5) '0 partner' is equal to the number young women who have not had sexual intercourse a AOR could not be computed because the prevalence for one of the elements was zero b For all women in the rural area, we used "≥ 3 partners" as the reference since the prevalence among those with "0 partners" was zero Table 2: Multivariate analysis of HIV infection among young urban women aged 15–24 years All women Sexually active women only Underlying factors With proximate factors Underlying factors With proximate factors Variables Cluster-level variables Education1 Low Middle High Individual-level variables Education2 Low Middle High Current student Not student Student Ever married Single Married Ever had sex No Yes Ever given birth No Yes Number of lifetime sexual partners 0 partner5 1 partner 2 partners ≥ 3 partners 1.00 0.85 (0.50–1.44) 0.57 (0.32–1.02) 1.00 0.73 (0.41–1.28) 0.35 (0.19–0.62) 1.00 0.66 (0.37–1.17) 1.00 1.54 (0.89–2.66) 1.00 0.93 (0.55–1.60) 0.60 (0.33–1.07) 1.00 0.70 (0.40–1.24) 0.37 (0.21–0.66) 1.00 0.80 (0.45–1.43) 1.00 1.31 (0.76–2.27) 1.00 3.60 (1.87–6.93) 1.00 1.08 (0.60–1.95) 0.64 (0.33–1.23) 1.00 0.80 (0.43–1.49) 0.43 (0.23–0.80) 1.00 0.74 (0.37–1.45) 1.00 1.31 (0.75–2.28) 1.00 1.08 (0.60–1.94) 0.63 (0.33–1.21) 1.00 0.79 (0.42–1.49) 0.44 (0.23–0.83) 1.00 0.76 (0.38–1.50) 1.00 1.27 (0.69–2.33) 1.00 1.04 (0.58–1.85) - 1.00 1.02 (0.57–1.82) 1.11 (0.60–2.08) (1) Cluster level education is based on the mean years of educational attainment of the population in the neighbourhoods: – urban: low (9.0–10.5), middle (10.6–11.0), high (11.1–11.3) (2) Individual level education categorization is as follows: urban: low (grade 0 – 7), middle (grade 8 – 11), high (grade 12 and above) (3) CI, confidence interval (4) AOR, age-adjusted odds ratio (5) '0 partner' is equal to the number young women who have not had sexual intercourse Significant results are in bold (p < 0.05) Page 6 of 11 (page number not for citation purposes)