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Table 2 Fertility rates and relative inclusion ratios (RIR) for HIV positive and HIV negative women by age in the rural area of Cameroon, 2004.

From: Association between fertility and HIV status: what implications for HIV estimates?

HIV positive women HIV negative women
Age
bracket
(years)
Number of
births
(A1)
Woman-years
at risk
(B1)
Fertility rate
(95% CI)
C1 = (A1/B1)*1000
Number of
births
(A2)
Woman-years
at risk
(B2)
Fertility rate
(95% CI)
C2 = (A2/B2)*1000
RIR
(95% CI)
C1/C2
15–19 4 43.4 92.2 (30.3–209.3) 238 1518.8 156.7 (137.7–177.6) 0.59 (0.51–0.67)
20–24 14 72.0 194.4 (110.7–318.5) 347 1316.7 263.5 (236.9–292.4) 0.74 (0.68–0.79)
25–29 14 89.3 156.8 (89.2–256.8) 234 987.0 238.1 (209.0–237.7) 0.66 (0.60–0.72)
30–34 9 61.0 147.5 (72.0–270.8) 167 815.3 204.8 (175.5–237.7) 0.72 (0.66–0.78)
≥ 35 3 56.7 52.9 (13.5–144.0) 141 1506.4 94.3 (79.7–110.75) 0. 56 (0.46–0.67)
Total 44 279.0 157.7 (118.4–204.1) 1127 4625.4 243.7 (229.7–258.2) 0.65 (0.59–0.71)
  1. CI = confidence interval; RIR = relative inclusion ratio; HIV = Human Immunodeficiency Virus
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