From: A retrospective follow up study on maternal age and infant mortality in two Sicilian districts
District | Â | Maternal age | ||||
---|---|---|---|---|---|---|
 |  | <25 | 25-29 | 30-34 | 35-39 | > = 40 |
Messina | Infant deaths*/live births | 4/2418 | 8/4435 | 24/5917 | 10/3153 | 10/742 |
 | IMR (×1000) | 1.6 | 1.8 | 4.1 | 3.2 | 13.5 |
 | Corrected** IMR (×1000) | 2.9 | 3.2 | 7.2 | 5.6 | 23.8 |
Palermo | Infant deaths*/live births | 11/7175 | 29/11622 | 39/13116 | 13/6803 | 8/1426 |
 | IMR (×1000) | 1.5 | 2.5 | 3.0 | 1.9 | 5.6 |
 | Corrected** IMR (×1000) | 2.3 | 3.7 | 4.4 | 2.8 | 8.2 |
Messina | Rate Ratio*** (95% CI) | 1.1 (0.3-3.4) | 1.2 (0.5-2.9) | 2.6 (1.3-5.4) | 2.1 (0.9-4.9) | 8.8 (3.7-20.7) |
Palermo | Rate Ratio*** (95% CI) | 1 (Ref.) | 1.6 (0.8-3.3) | 1.9 (0.1-3.8) | 1.2 (0.6-2.8) | 3.7 (1.5-9.1) |