Skip to main content
. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Epidemiology. 2018 Jan;29(1):8–21. doi: 10.1097/EDE.0000000000000757

Table 3.

Risks (odds ratios) for any vs no gestational pesticide exposure (per month) among women of preterm cases and term controls

Gestational
Weeks at
Delivery		 Month of
Exposurea 		Case (Preterm)
(exposed/not-
exposed)		 Control (Term)
(exposed/not-
exposed)		 Crude OR
(95%CI)		 Adjustedb OR
(95%CI)
20–23 B1 129/386 55136/142325 0.86 (0.71–1.05) 0.86 (0.70–1.06)
P1 112/403 55507/141954 0.71 (0.58–0.88) 0.73 (0.59–0.91)
P2 139/376 55770/141691 0.94 (0.77–1.14) 0.94 (0.77–1.16)
P3 127/388 56019/141442 0.83 (0.68–1.01) 0.84 (0.68–1.04)
P4 133/382 55834/141627 0.88 (0.72–1.08) 0.89 (0.72–1.10)
P5 124/391 56029/141432 0.80 (0.65–0.98) 0.83 (0.67–1.03)
24–27 B1 413/1379 55136/142325 0.77 (0.69–0.86) 0.82 (0.73–0.92)
P1 407/1385 55507/141954 0.75 (0.67–0.84) 0.78 (0.70–0.88)
P2 432/1360 55770/141691 0.81 (0.72–0.90) 0.84 (0.75–0.94)
P3 416/1376 56019/141442 0.76 (0.68–0.85) 0.80 (0.71–0.90)
P4 439/1353 55834/141627 0.82 (0.74–0.92) 0.86 (0.77–0.96)
P5 430/1362 56029/141432 0.80 (0.71–0.89) 0.82 (0.73–0.92)
P6 415/1377 56079/141382 0.76 (0.68–0.85) 0.79 (0.71–0.89)
28–31 B1 790/2308 55136/142325 0.88 (0.81–0.96) 0.93 (0.86–1.01)
P1 789/2309 55507/141954 0.87 (0.81–0.95) 0.91 (0.83–0.99)
P2 815/2283 55770/141691 0.91 (0.84–0.98) 0.95 (0.87–1.03)
P3 806/2292 56019/141442 0.89 (0.82–0.96) 0.92 (0.84–1.00)
P4 816/2282 55834/141627 0.91 (0.84–0.98) 0.95 (0.87–1.03)
P5 792/2306 56029/141432 0.87 (0.80–0.94) 0.90 (0.83–0.98)
P6 764/2334 56079/141382 0.83 (0.76–0.90) 0.87 (0.80–0.95)
P7 772/2326 56000/141461 0.84 (0.77–0.91) 0.88 (0.81–0.96)
32–36 B1 5850/16658 55136/142325 0.91 (0.88–0.94) 0.92 (0.89–0.95)
P1 5900/16608 55507/141954 0.91 (0.88–0.94) 0.92 (0.89–0.95)
P2 5937/16571 55770/141691 0.91 (0.88–0.94) 0.93 (0.90–0.96)
P3 5911/16597 56019/141442 0.90 (0.87–0.93) 0.91 (0.88–0.94)
P4 5966/16542 55834/141627 0.91 (0.89–0.94) 0.93 (0.90–0.96)
P5 5976/16532 56029/141432 0.91 (0.88–0.94) 0.93 (0.90–0.96)
P6 5871/16637 56079/141382 0.89 (0.86–0.92) 0.91 (0.88–0.93)
P7 5921/16587 56000/141461 0.90 (0.87–0.93) 0.92 (0.89–0.95)
P8 5782/16726 55662/141799 0.88 (0.85–0.91) 0.90 (0.87–0.93)
a

B1=month before conception, P1–P8=each successive month from first to ninth month of pregnancy.

b

Odds ratio adjusted for maternal age (years), race/ethnicity(non-Hispanic white, U.S.-born Hispanic, foreign-born Hispanic, other), education (less than high school, high school, more than high school),parity (1 or ≥2), prenatal care initiated by fifth month (yes vs no), payer source for care (Medi-Cal, private, or other).