Table IV.
Comparisons of ORs of Occupation Groups between Employment Started 20-Year's Ago and within 20 Years among Prevalent and Incident Breast Cancer Case Pools, Shanghai, 1997-2004
| Prevalent |
Incident |
|||||||
|---|---|---|---|---|---|---|---|---|
| Job started 20 years ago | Job started within 20 years | Job started 20 years ago | Job started within 20 years | |||||
| | ||||||||
| Cases | OR (95% CI) | Cases | OR (95% CI) | Cases | OR (95% CI) | Cases | OR (95% CI) | |
| Technicians in engineering, agriculture and forestry (031-049) | 29 | 1.6 (1.0-2.4) | 4 | 0.3 (0.1-0.9) | 19 | 1.0 (0.6-1.6) | 1 | 0.3 (0.04-2.1) |
| Medical and health care personnel (071-089) | 27 | 0.9 (0.6-1.4) | 9 | 0.9 (0.5-1.8) | 40 | 1.4 (1.0-2.0) | 1 | 0.6 (0.1-4.3) |
| Teaching personnel (111-119) | 70 | 1.5 (1.1-2.0) | 13 | 0.8 (0.5-1.5) | 42 | 0.9 (0.7-1.3) | 4 | 1.5 (0.5-4.0) |
| Administrative clerical workers (311-319) | 10 | 0.8 (0.4-1.4) | 9 | 1.0 (0.5-2.0) | 22 | 1.5 (1.0-2.4) | 7 | 0.9 (0.4-2.0) |
| Postal and telecommunication workers (331-339) | 55 | 1.9 (0.8-4.9) | 2 | 0.8 (0.2-3.1) | 5 | 2.2 (1.0-5.5) | 1 | 0.6 (0.1-4.7) |
| Purchasing and marketing personnel (421-429) | 8 | 1.7 (0.8-3.5) | 6 | 0.9 (0.4-2.0) | 11 | 1.7 (0.9-3.2) | 11 | 1.7 (0.9-3.1) |
| Service workers (511-519) | 12 | 1.1 (0.6-2.0) | 15 | 1.3 (0.8-2.2) | 16 | 1.4 (0.8-2.3) | 15 | 1.7 (1.0-2.9) |
| Odd-job workers (520-529) | 11 | 0.9 (0.5-1.7) | 15 | 1.0 (0.6-1.7) | 19 | 1.7 (1.1-2.8) | 15 | 1.2 (0.7-2.0) |
| Agriculture, forest, animal husband, and fish workers (601-699) | 50 | 0.9 (0.6-1.2) | 9 | 0.6 (0.3-1.2) | 89 | 1.2 (0.9-1.6) | 0 | -- |
| Tailoring and sewing workers (771-779) | 15 | 1.6 (1.0-2.7) | 7 | 1.1 (0.5-2.3) | 12 | 1.1 (0.6-1.9) | 3 | 1.4 (0.4-4.5) |
| Food and beverage production workers (781-789) | 8 | 1.9 (0.9-3.9) | 3 | 1.0 (0.3-3.1) | 4 | 1.2 (0.4-3.2) | 0 | -- |
| Electric equipment installing, repairing, and assembling workers (861-869) | 23 | 1.3 (0.8-1.9) | 9 | 0.9 (0.5-1.9) | 17 | 0.8 (0.5-1.4) | 4 | 1.4 (0.5-3.9) |
| Examiners, measurers, and testers (961-969) | 43 | 1.5 (1.1-2.1) | 18 | 0.9 (0.5-1.4) | 38 | 1.1 (0.8-1.5) | 5 | 0.7 (0.3-1.6) |
ORs adjusted for education levels, age at menarche, age at first live birth, number of live births, and menopausal status by strata of two match variables of age at diagnosis and year of birth.