Table 3:
Odds ratios for associations between agricultural employment in household and adverse pregnancy outcomes in the analytical cohort (N=623,185)
| Non-Agricultural Household n = 616,814 | Agricultural Household n = 6,371 | Odds Ratio (95% CI) | |||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| N | events | % | events | % | Crude | Adjusteda | |
| PTB (<37 weeks) | 605,671 | 36,741 | 6.5 | 352 | 5.7 | 0.86 (0.77, 0.96) | 0.82 (0.74, 0.92) |
| LBW (≤2,500 g) | 623,094 | 31,981 | 5.2 | 286 | 4.5 | 0.86 (0.76, 0.97) | 0.85 (0.76, 0.96) |
| SGA (3rd percentile) | 623,184 | 11,480 | 1.9 | 106 | 1.7 | 0.89 (0.74, 1.08) | 0.93 (0.77, 1.13) |
| SGA (5th percentile) | 623,184 | 21,381 | 3.5 | 205 | 3.2 | 0.93 (0.81, 1.06) | 0.93 (0.81, 1.06) |
| SGA (10th percentile) | 623,184 | 48,415 | 7.8 | 444 | 7.0 | 0.88 (0.80, 0.97) | 0.91 (0.82, 1.00) |
| Postterm birth (≥41 weeks) | 605,671 | 36,741 | 6.1 | 410 | 6.6 | 1.08 (0.98, 1.20) | 1.20 (1.09, 1.33) |
| Grade 1 Macrosomia (≥4,000g) | 623,094 | 46,543 | 7.5 | 537 | 8.4 | 1.13 (1.03, 1.23) | 1.15 (1.05, 1.26) |
| Grade 2 Macrosomia (≥4,500g) | 623,094 | 5,983 | 1.0 | 87 | 1.4 | 1.41 (1.14, 1.75) | 1.38 (1.11, 1.71) |
| Grade 3 Macrosomia (≥5,000g) | 623,094 | 570 | 0.1 | 10 | 0.2 | 1.70 (0.91, 3.18) | 1.48 (0.79, 2.77) |
| LGA (90th percentile) | 623,184 | 52,698 | 8.5 | 605 | 9.5 | 1.12 (1.03, 1.22) | 1.14 (1.04, 1.24) |
| LGA (95th percentile) | 623,184 | 26,163 | 4.2 | 338 | 5.3 | 1.26 (1.13, 1.41) | 1.27 (1.13, 1.41) |
| LGA (97th percentile) | 623,184 | 15,146 | 2.5 | 209 | 3.3 | 1.35 (1.17, 1.55) | 1.33 (1.16, 1.53) |
| APGAR score at 5 min (≤7) | 622,705 | 4,334 | 0.7 | 58 | 0.9 | 1.30 (1.00, 1.69) | 1.39 (1.07, 1.81) |
CI, confidence interval; LBW, Low birth weight; PTB, Preterm birth; LGA, Large for gestational age; SGA, Small for gestational age
a
Adjusted for maternal age, education, ethnicity, number of living children, and diabetes.