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Table 6 Likelihood of "condom use at last casual sex" and "having ≥2 sexual partners in last 12 months" by educational attainment among urban respondents aged 15–24 years in Zambia, results of multivariate logistic regression: 1995–2003

From: Steep HIV prevalence declines among young people in selected Zambian communities: population-based observations (1995–2003)

Factor Education 1995 1999 2003
   Prevalence [%(n)] Adjusted Odds Ratio(95%CI) Prevalence [%(n)] Adjusted Odds Ratio(95%CI) Prevalence [%(n)] Adjusted Odds Ratio(95%CI)
Condom use during the last casual sex 0–7 years 25.5 (286) 1 26.2(126) 1 42.9(119) 1
  8–10 years 27.4 (402) 0.98(0.69–1.43) 51.2 (201) 2.82(1.73–4.60) 53.8 (184) 1.54 (0.96–2.46)
  ≥11 years 42.7(218) 1.40(0.94–2.10) 68.9 (270) 5.62(3.44–9.20) 67.3 (437) 2.96(1.93–4.52)
Proportion having ≥2 sexual partners, last 12 months 0–7 years 16.2 (376) 1 11.0 (145) 1 20.8 (144) 1
  8–9 years 16.2 (469) 0.76(0.51–1.13) 18.4 (228) 1.48(0.78–2.82) 16.7 (204) 0.63(0.35–1.12)
  ≥11 years 15.6 (270) 0.49(0.30–0.79) 17.2 (285) 1.06(0.55–2.82) 11.5 (442) 0.33(0.19–0.56)
  1. Notes: 1. All confidence interval adjusted for clustering effect using Intercooled Stata version 8 with the Standard Enumeration Area (SEA) as clusters 3. Variables included in the model were education, age, sex, marital status, employment and religion. 2. Samples sizes (were drawn from groups ever had sex).