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Table 3 HIV incidence rates among women who migrate in the AHRI population-based HIV incidence cohort 2003–2015, by socio-demographic factors

From: Effect of ART scale-up and female migration intensity on risk of HIV acquisition: results from a population-based cohort in KwaZulu-Natal, South Africa

  Events Person years IR (per 100 person years)
Age category: 15–19 529 11,085 4.77
  20–24 734 9876 7.43
25–29 321 4719 6.80
30–34 128 3088 4.14
35–39 67 3430 1.95
40+ 219 31,018 0.71
Marital status: Single 1733 38,457 4.51
  Divorced/Separated 36 10,624 0.34
Married - Monogamous 108 12,095 0.89
Married - Polygamous 10 1640 0.61
Sexual debut age: Before the age of 17 590 11,139 5.30
Ages 17 and after 750 22,164 3.38
Ever pregnant: No 143 4368 3.27
Yes 1332 44,794 2.97
Contraception use: No 209 4941 4.23
Yes 478 8114 5.89
Number of sexual partners: Less than 5 partners 1737 51,428 3.38
  ≥5 57 850 6.70
Household income: Bottom 20% 329 10,664 3.09
Middle 60% 1166 35,543 3.28
Top 20% 272 10,243 2.66
Area: Peri-urban 624 16,625 3.75
Urban 54 1738 3.11
Rural 1213 42,835 2.83
Number of external migration movements per year: None 1780 59,943 2.97
  One movement per year 168 2677 6.27
Two or more movements per year 48 561 8.56
ART scale-up period: Before 2010 953 33,638 3.53
  Year 2010 and on 1045 29,579 2.83
  1. The above final regression result is based on n = 5978