Research Article
Estimating Maternal Mortality Level in Rural Northern Nigeria by the Sisterhood Method
Table 1
Responses of 3,080 respondents about their sister’s vital status and LTR of maternal death, selected states, Northern Nigeria, 2011.
| | Column 1 | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | Column 8 | Age group
of respondent | Number of
respondents (%) | Number of sisters | Number of sisters
who died (%) | Number of maternal
deaths (%) | Adjustment factor | Sisters exposed
(Col. 3 * Col. 6) | Lifetime risk
(Col.5/Col.7) |
| | 15–19 | 217 (7.0) | 375 | 23 (3.9) | 7 (2.3) | 0.107 | 40 | 0.17 | | 20–24 | 713 (23.1) | 1607 | 120 (20.2) | 50 (16.8) | 0.206 | 331 | 0.15 | | 25–29 | 799 (25.9) | 2099 | 169 (28.5) | 75 (25.2) | 0.343 | 720 | 0.10 | | 30–34 | 724 (23.5) | 1863 | 124 (20.9) | 76 (25.5) | 0.503 | 937 | 0.08 | | 35–39 | 363 (11.8) | 951 | 71 (12.0) | 37 (12.4) | 0.664 | 631 | 0.06 | | 40–44 | 211 (6.9) | 696 | 77 (13.0) | 45 (15.1) | 0.802 | 558 | 0.08 | | 45–49 | 53 (1.7) | 140 | 9 (1.5) | 8 (2.7) | 0.900 | 126 | 0.06 |
| | Total | 3,080 (100.0) | 7,731 | 593 (100.0) | 298 (100.0) | | 3,344 | 0.09 |
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MMR = 1,271 maternal deaths per 100,000 live births; 95% CI is 1,152–1,445.
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