From: Area-level poverty and preterm birth risk: A population-based multilevel analysis
PTB (< 35 wk) | PTB (< 32 wk) | |||||
---|---|---|---|---|---|---|
OR (95% CI) | IOR-80 * | MOR† | OR (95% CI) | IOR-80 * | MOR† | |
Model I: Poverty Only | 1.21 | 1.22 | ||||
2nd Quartile | 1.14 (0.94, 1.38) | 0.79, 1.63 | 1.15 (0.92, 1.43) | 0.79, 1.68 | ||
3rd Quartile | 1.28(1.06, 1.55) | 0.89, 1.83 | 1.33 (1.07, 1.65) | 0.91, 1.94 | ||
4th Quartile | 1.30(1.09, 1.56) | 0.91, 1.87 | 1.40 (1.14, 1.72) | 0.96, 2.05 | ||
Model II: Model I + Demographic factors | 1.10 | 1.07 | ||||
2nd Quartile | 1.09 (0.97, 1.22) | 0.91, 1.31 | 1.09 (0.97, 1.23) | 0.96, 1.24 | ||
3rd Quartile | 1.18 (1.06, 1.32) | 0.99, 1.42 | 1.24 (1.10, 1.39) | 1.09, 1.41 | ||
4th Quartile | 1.15 (1.04, 1.28) | 0.96, 1.39 | 1.25 (1.12, 1.41) | 1.10, 1.43 | ||
Model III: Model II + Prenatal Care | 1.11 | 1.09 | ||||
2nd Quartile | 1.09 (0.97, 1.22) | 0.90, 1.32 | 1.09 (0.96, 1.25) | 0.92, 1.30 | ||
3rd Quartile | 1.19 (1.06, 1.33) | 0.98, 1.44 | 1.23 (1.08, 1.40) | 1.04, 1.46 | ||
4th Quartile | 1.15 (1.03, 1.28) | 0.95, 1.39 | 1.23 (1.08, 1.39) | 1.03, 1.46 | ||
Model IV: Model III + Behaviors | 1.11 | 1.10 | ||||
2nd Quartile | 1.09 (0.97, 1.23) | 0.90, 1.33 | 1.10 (0.96, 1.25) | 0.92, 1.31 | ||
3rd Quartile | 1.19 (1.06, 1.34) | 0.99, 1.45 | 1.24 (1.08, 1.41) | 1.04, 1.47 | ||
4th Quartile | 1.16 (1.04, 1.30) | 0.96, 1.41 | 1.24 (1.09, 1.41) | 1.04, 1.48 | ||
Model V: Model III + Medical Risk Factors | 1.14 | 1.18 | ||||
2nd Quartile | 1.12 (0.97, 1.29) | 0.87, 1.44 | 1.13 (0.94, 1.37) | 0.83, 1.55 | ||
3rd Quartile | 1.23 (1.07, 1.42) | 0.95, 1.59 | 1.28 (1.06, 1.55) | 0.94, 1.75 | ||
4th Quartile | 1.18 (1.03, 1.35) | 0.91, 1.52 | 1.27 (1.06, 1.52) | 0.93, 1.73 |