Table 7
Summary of studies of ALRI in young children and indoor biomass smoke in developing countries
| Case-control studies (n = 9) | |
|---|---|
| (South Africa, Zimbabwe, Nigeria, Tanzania, Gambia (2), Brazil, India, Argentina) | |
| 6 adjusted for confounders | n=4311 |
| 3 not significant | Odds ratios = 2.2–9.9 |
| Cohort studies (n = 4) | |
| (Nepal, Kenya, Gambia (2)) | |
| 2 adjusted for confounders | n=910 |
| 1 not significant | Odds ratios = 2.2–6.0 |
| Case-fatality study (n = 1) | |
| (Nigeria) | |
| Hospitalised patients | n=103 |
| Odds ratio = 4.8 | |
| Developed countries (n = 2) | |
| (USA (2)) | |
| Case-control | n=206 |
| Adjusted for confounders | Odds ratios = 4.8–7.0 |
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The dividing line between developed and developing countries = $1000 per capita purchasing power in 1995 (UNDP, 1998).116
