| Alcohol use in early pregnancy/participants | (%) | Crude | Adjusteda | ||||
---|---|---|---|---|---|---|---|---|
PR (95% CI) | P-value | PR (95% CI) | P-value | |||||
Educational attainment | ||||||||
 Not working in early pregnancy (n = 4002) | ||||||||
  High school or lower | 178/1509 | (11.8) | 1.00 |  |  | 1.00 |  |  |
  College | 243/1510 | (16.1) | 1.36 | (1.14–1.63) | < 0.001 | 1.28 | (1.07–1.54) | 0.008 |
  University or higher | 205/983 | (20.9) | 1.77 | (1.47–2.13) | < 0.001 | 1.62 | (1.34–1.96) | < 0.001 |
 Working in early pregnancy (n = 7837) | ||||||||
  High school or lower | 422/2242 | (18.8) | 1.00 |  |  | 1.00 |  |  |
  College | 767/3092 | (24.8) | 1.32 | (1.19–1.46) | < 0.001 | 1.26 | (1.13–1.40) | < 0.001 |
  University or higher | 665/2503 | (26.6) | 1.41 | (1.27–1.57) | < 0.001 | 1.29 | (1.16–1.45) | < 0.001 |
Work status in early pregnancy | ||||||||
 High school or lower (n = 3751) | ||||||||
  Not working | 178/1509 | (11.8) | 1.00 |  |  | 1.00 |  |  |
  Working | 422/2242 | (18.8) | 1.60 | (1.36–1.88) | < 0.001 | 1.57 | (1.33–1.85) | < 0.001 |
 College (n = 4602) | ||||||||
  Not working | 243/1510 | (16.1) | 1.00 |  |  | 1.00 |  |  |
  Working | 767/3092 | (24.8) | 1.54 | (1.35–1.76) | < 0.001 | 1.48 | (1.30–1.69) | < 0.001 |
 University or higher (n = 3486) | ||||||||
  Not working | 205/983 | (20.9) | 1.00 |  |  | 1.00 |  |  |
  Working | 665/2503 | (26.6) | 1.27 | (1.11–1.46) | < 0.001 | 1.19 | (1.03–1.38) | 0.016 |