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Table 5 ORs of PM2.5 exposure variable in multilevel models

From: Urban–rural disparity in the relationship between ambient air pollution and preterm birth

Region

OR (95% CI)

Hubei

East

Middle

West

Model

2

1.06 (1.04–1.09)*

1.13 (1.10–1.16)*

1.15 (1.07–1.23)*

0.93 (0.82–1.07)

4

0.98 (0.95–1.02)

1.12 (1.06–1.20)*

1.04 (0.96–1.13)

0.88 (0.75–1.04)

5

0.99 (0.95–1.03)

1.12 (1.05–1.20)*

1.02 (0.94–1.11)

0.83 (0.68–1.00)

  1. OR, odds ratio; CI, confidence interval
  2. Significant level: “*” p ≤ 0.05
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International Journal of Health Geographics

ISSN: 1476-072X