Table 2 Prevalence of preterm birth at less than 35 weeks and less than 32 weeks of gestation according to quartile of county-level poverty
From: Area-level poverty and preterm birth risk: A population-based multilevel analysis
County Poverty Rate | Reference 1st quartile | 2nd quartile | 3rd quartile | Highest Poverty 4th quartile | p value |
|---|---|---|---|---|---|
Total | 92,072 | 196,672 | 170,701 | 175,549 | |
PTB (< 35 wk) | 2,551 (2.77%) | 6,684 (3.40%) | 6,671 (3.91%) | 8,584 (4.89%) | < 0.0001 |
PTB (< 32 wk) | 893 (0.97%) | 2,521 (1.28%) | 2,646 (1.55%) | 3,402 (1.94%) | < 0.0001 |