Table 3.
Adjusted odds ratio of preeclampsia and class A2 gestational diabetes for women's employment status and eight common industrial classifications
| Employment status of women | Preeclampsia (n = 21,172) |
Class A2 gestational diabetes (n = 9,068) |
||||
|---|---|---|---|---|---|---|
| N | Not adjusted for BMI | Fully adjusted∗ | N | Not adjusted for BMI | Fully adjusted† | |
| Nonemployed (n = 464,166) | 8221 | 1.00 (reference) | 1.00 (reference) | 4123 | 1.00 (reference) | 1.00 (reference) |
| Employed (n = 851,952) | 12,951 | 0.92 (0.89, 0.94) | 0.91 (0.88, 0.93) | 4945 | 0.8 (0.75, 0.85) | 0.80 (0.75, 0.85) |
| Industrial classification‡ | ||||||
| Financial intermediation (n = 61,156) | 849 | 1.00 (reference) | 1.00 (reference) | 355 | 1.00 (reference) | 1.00 (reference) |
| Manufacturing (n = 140,020) | 2134 | 1.05 (0.97, 1.14) | 0.99 (0.91, 1.07) | 1571 | 1.27 (1.08, 1.49) | 1.20 (1.03, 1.41) |
| Wholesale and retail trade (n = 81,592) | 1249 | 0.99 (0.91, 1.09) | 0.97 (0.88, 1.06) | 772 | 1.17 (0.98, 1.39) | 1.13 (0.95, 1.34) |
| Real estate, renting and business activities (n = 102,940) | 1542 | 0.99 (0.90, 1.07) | 0.95 (0.87, 1.04) | 894 | 1.19 (1.01, 1.40) | 1.15 (0.98, 1.36) |
| Public administration and defense/social security (n = 46,933) | 676 | 0.88 (0.79, 0.98) | 0.88 (0.79, 0.98) | 287 | 0.90 (0.73, 1.11) | 0.93 (0.75, 1.14) |
| Education (n = 101,172) | 1496 | 0.92 (0.85, 1.01) | 0.91 (0.83, 0.99) | 486 | 0.93 (0.78, 1.10) | 0.92 (0.77, 1.09) |
| Health and social work (n = 138,177) | 2376 | 1.16 (1.07, 1.25) | 1.11 (1.03, 1.21) | 682 | 1.13 (0.96, 1.33) | 1.07 (0.91, 1.26) |
| Community, social and personal service activities (n = 49,173) | 857 | 1.11 (1.00, 1.22) | 1.06 (0.96, 1.17) | 446 | 1.22 (1.00, 1.47) | 1.18 (0.98, 1.43) |
BMI, body mass index.
adjusted for maternal age at birth, relative level of income (in deciles), employment status, living in the Seoul Metropolitan Area, pre-pregnancy body mass index (BMI), past smoking, fasting blood glucose, plurality, and year of childbirth.
adjusted for maternal age at birth, relative level of income (in deciles), living in the Seoul capital area, pre-pregnancy body mass index (BMI), pre-conceptional smoking history, plurality, and year of childbirth.
Eight from the 18 industrial classifications based on the International Standard Industrial Classification of All Economic Activities (ISIC) Revision (Rev) 3.0.13 adopted by the NHI database. Numbers in parentheses are 95% confidence intervals of risk estimates. Estimates with P value < 0.05 are bolded.