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

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)

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).