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Table 2 Individual-level characteristics and prevalence ratios for the outcome: pregnant women who obtained a HIV screening

From: Factors associated with HIV and syphilis screenings among pregnant women at first antenatal visit in Lusaka, Zambia

Characteristics HIV Screened, n = 17,374 HIV Screened, % PR (95% CI) aPRa (95% CI)
Age
 < 20 2406 98.0 Ref Ref
 20–34 13,168 95.5 0.97 (0.96, 0.99) 0.99 (0.98, 1.00)
 ≥ 35 1800 90.8 0.93 (0.89, 0.96) 0.96 (0.92, 0.99)
Marital status
 Married/with a partner 15,312 95.2 Ref Ref
 Single 1972 96.8 1.02 (1.01, 1.03) 1.00 (0.99, 1.01)
 Widowed without current partner 44 80.0 0.84 (0.65, 1.08) 0.86 (0.67, 1.09)
 Divorced/separated 46 83.6 0.88 (0.82, 0.94) 0.88 (0.82, 0.95)
Education
 ≤ Primary complete 6227 94.0 Ref Ref
 > Primary complete to ≤ Secondary school 9589 95.9 1.02 (1.01, 1.03) 1.01 (1.00, 1.02)
 > Secondary school 1558 97.0 1.03 (1.01, 1.05) 1.02 (1.00, 1.04)
History of syphilis infection
 No 17,017 95.5 Ref Ref
 Yes 357 88.4 1.08 (1.01, 1.16) 1.07 (1.01, 1.15)
Previous pregnancy
 0 4733 97.9 Ref Ref
 1 4495 96.1 0.98 (0.97, 0.99) 0.99 (0.98, 1.00)
 2 3461 94.3 0.96 (0.94, 0.98) 0.97 (0.95, 0.99)
 3 2338 93.6 0.96 (0.93, 0.98) 0.97 (0.95, 0.99)
 ≥ 4 2347 92.1 0.94 (0.92, 0.97) 0.97 (0.95, 0.98)
Women with ≥ 1 previous pregnancy n = 12,544 % PR (95% CI) aPRa (95% CI)
Previous preterm births
 0 12,077 94.4 Ref Ref
 1 392 91.0 0.97 (0.94, 0.99) 0.97 (0.94, 1.00)
 ≥ 2 75 94.9 0.99 (0.93, 1.05) 1.00 (0.94, 1.06)
Previous abortions and/or stillbirths
 0 10,501 94.4 Ref Ref
 1 1653 94.1 0.99 (0.98, 1.01) 1.00 (0.98, 1.02)
 ≥ 2 390 92.4 0.97 (0.93, 1.01) 0.99 (0.95, 1.02)
  1. aAdjusted prevalence ratios (aPR) and 95% confidence intervals (95% CI) were adjusted for age, marital status, education, history of known syphilis infection, and previous pregnancy