Table 5 Population attributable risks for SGA of area average income and maternal risk factors
| Â | Population attributable risk | Population attributable risk % | SGA cases/year |
|---|---|---|---|
Crude | Â | Â | Â |
Average income quintile | 1.2 | 17.0 | 191 |
Smoking during pregnancy | 0.2 | 2.2 | 22 |
Parity (first birth) | 2.3 | 31.7 | 360 |
Underweight (<18.5) | 0.5 | 6.3 | 69 |
Height (bottom four quintiles) | 3.4 | 47.6 | 543 |
Hypertension | 0.4 | 5.7 | 62 |
Oligohydramnios | 0.4 | 6.1 | 66 |
Placental disorder | 0.1 | 1.4 | 12 |
Adjusted | Â | Â | Â |
Average income quintile | 1.1 | 13.6 | 181 |
Smoking during pregnancy | 0.2 | 2.5 | 34 |
Parity (first birth) | 2.6 | 32.1 | 415 |
Underweight (<18.5) | 0.5 | 6.2 | 89 |
Height (bottom four quintiles) | 4.1 | 50.6 | 651 |
Hypertension | 0.5 | 6.2 | 77 |
Oligohydramnios | 0.6 | 7.4 | 100 |
Placental disorder | 0.1 | 1.2 | 14 |