Exposure category | Cases | Incidence rate (1/100,000) | Crude IRR | Adjusted IRR (95 % CI)Model 1 | Adjusted IRR (95 % CI)Model 2 |
---|---|---|---|---|---|
Unexposed | 9,225 | 63.00 | 1.00(ref) | 1.00(ref) | 1.00(ref) |
Any exposed | 179 | 71.32 | 1.13 | 1.12(0.97–1.30) | 1.10(0.95–1.28) |
12–7 months | 53 | 73.12 | 1.17 | 1.17(0.90–1.53) | 1.14(0.87–1.49) |
6–0 months | 61 | 76.82 | 1.20 | 1.20(0.93–1.54) | 1.18(0.91–1.50) |
Prenatal | 65 | 65.60 | 1.04 | 1.02(0.80–1.30) | 1.02(0.80–1.30) |
1st trimester | 23 | 79.07 | 1.24 | 1.21(0.80–1.82) | 1.19(0.79–1.79) |
2nd trimester | 26 | 64.15 | 1.04 | 1.01(0.70–1.48) | 1.00(0.68–1.45) |
3rd trimester | 16 | 54.31 | 0.85 | 0.85(0.52–1.39) | 0.88(0.54–1.44) |