Table 3 Factors associated with VLBW infant delivery after adjustment for potential confounding and assessment for effect modification
main effect variables and interaction terms in the resulting model* | OR (95% CI) |
|---|---|
previous preterm delivery | 2.31 (1.20–4.44) |
low maternal education | 2.00 (1.31–3.19) |
single-room apartment | 1.95 (0.98–3.87) |
previous fetal loss | 1.64 (1.09–2.46) |
maternal unemployment | 1.60 (0.94–2.72) |
smoking during pregnancy | 1.51 (0.99–2.31) |
no single mother, living in East Berlin** | 1.0 |
no single mother, living in West Berlin | 0.96 (0.61–1.51) |
single mother, living in East Berlin | 1.53 (0.78–3.00) |
single mother, living in West Berlin | 3.86 (1.50–9.95) |