Model

(PTB = 1, EPTB = 0)

95 Percentile

3-year exposure

Crude OR (95% CI)

Adjusted OR* (95% CI)

Model 1: API

0.993 (0.988, 0.998)**

1.005 (0.997, 1.014)

Model 2: PM10

0.999 (0.997, 1.003)

1.006 (1.002, 1.011)**

Model 3: SO₂

1.004 (0.999, 1.009)

1.012 (1.006, 1.019)**

Model 4: NO₂

0.999 (0.996,1.001)

1.001 (0.998, 1.004)

Model 5: O₃

0.996 (0.995, 0.998)**

0.999 (0.997, 1.003)

Model 6: CO

0.999 (0.999, 1.000)

1.000 (0.999, 1.000)