Journal of Population Sciences
Table 3 Mediation effect of maternal smoking on birth outcomes by cohort
From: Inequalities at birth: stable socioeconomic differences in birth outcomes in three British cohorts
| Â | NCDS (1958) | B70 (1970) | MCS (2001) |
|---|---|---|---|
| Â | Mediation effect (CI) | Mediation effect (CI) | Mediation effect (CI) |
Panel A | Â | Â | Â |
Y = Birth Weight (g) |  |  |  |
Maternal behavior (M) | Â | Â | Â |
Smoking in pregnancy | − 19.657 (− 23.322, − 16.4) | − 30.605 (− 35.02, − 26.556) | − 39.886 (− 45.68, − 33.822) |
% Mediation | 35.9% | 65.6% | 60.5% |
Panel B | Â | Â | Â |
Y = LBW |  |  |  |
Maternal behavior (M) | Â | Â | Â |
Smoking in pregnancy | 0.004 (0.002, 0.005) | 0.007 (0.007, 0.005) | 0.009 (0.007, 0.011) |
% Mediation | 16.4% | 46% | 46.2% |
N | 15,500 | 15,552 | 14,619 |