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Table 1 Comparison of characteristics for different groups of pregnant women that HIV tested at 139 ANC clinics in Botswana

From: Using routine programmatic data to measure HIV incidence among pregnant women in Botswana

Characteristic Subgroup 1 Subgroup 2 p-valued
Returned an ANC follow-up visit and HIV re-re-testeda Returned and re-tested Did not return and re-test
(n = 7940) (n = 20794)
Age, median (IQR) 26 (22–31) 26 (22–31)  
 ≥ 25 years old 4713 (61.0%) 11,709 (57.8%)  < 0.001
Citizen of Botswana 7760 (97.7%) 19,701 (94.7%)  < 0.001
Urban testing locationb 4207 (53.0%) 10,847 (52.2%) 0.213
HIV seroconverted during observation in ANC carec Did not HIV seroconvert HIV seroconverted p-valued
(n = 7928) (n = 17)
Age, median (IQR) 26 (22–31) 23 (21–27)  
 ≥ 25 years old 4919 (62.0%) 7 (41.2%) 0.094
Citizen of Botswana 7744 (97.7%) 16 (94.1%) 0.316
Urban testing locationb 4400 (53.0%) 7 (41.2%) 0.329
  1. Abbreviations: interquartile range (IQR)
  2. aAmong women who tested HIV-negative at ANC clinics (n = 28,734)
  3. bTesting locations categorized into urban and rural testing locations based on testing district
  4. cAmong women who tested HIV-negative at ANC clinics, returned for an ANC follow-up visit, and re-tested for HIV (n = 7940)
  5. dp-values were measured using Pearson’s chi-squared test; significance was determined at the p < 0.05 level