Table 2 Prevalence of risk factors intrinsic to the infant
Characteristic | Total | Study Site | |||
|---|---|---|---|---|---|
n/N | Prevalence % (95% CI) | Chawama n/N | Chilenje n/N | PR (95% CI) | |
Previous history of suspected SIDSa | 24/331 | 7.3 (4.7, 10.6) | 15/176 | 9/155 | 1.47 (0.66, 3.26) |
Twin birth | 25/478 | 5.2 (3.4, 7.7) | 13/240 | 12/238 | 1.07 (0.50, 2.30) |
Previous suspected SIDS in twins | 3/25 | 12.0 (2.6, 31.2) | 2/13 | 1/12 | 1.85 (0.19, 17.84) |
Birth defects | 6/478 | 1.3 (0.5, 2.7) | 4/240 | 2/238 | 1.98 (0.37, 10.68) |
Birth weight | |||||
< 2500 g | 47/478 | 9.8 (7.4, 12.9) | 26/240 | 21/238 | 1.24 (0.72, 2.14) |
> =2500 | 429/478 | 89.7 (84.1, 90.2) | 212/240 | 217/238 | 0.98 (0.92, 1.04) |
Time of delivery | |||||
Early | 91/478 | 19.0 (15.6, 22.9) | 58/240 | 33/238 | 1.74 (1.18, 2.57) |
On time/late | 387/478 | 80.9 (77.2, 84.4) | 182/240 | 205/238 | 0.88 (0.81, 0.96) |