Infection screening programme (ISP) v control in pregnant women*
| Outcomes | ISP | Control | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| *Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | ||||
| Spontaneous preterm delivery (at <37 wk gestation) | 3.0% | 5.3% | 45% (25 to 59) | 43 (28 to 86) |
| Infants born preterm with birth weight ⩽2500 g | 1.7% | 3.5% | 52% (28 to 68) | 55 (36 to 115) |
| Late miscarriages | 0.39% | 0.72% | 46% (−25 to 76) | Not significant |
