Table III.
Associations of Occupation Groups and Individual Occupations with Incident Breast Cancer, Shanghai, 1997-2004
| Occupations | No. of ever exposed cases | No. of ever exposed controls | OR (95% CI) |
|---|---|---|---|
| Scientific researchers (011-029) | 5 | 22 | 1.4 (0.6-3.6) |
| Researchers in engineering (021) | 9 | 15 | 1.5 (0.5-4.2) |
| Medical and health care personnel (071-089) | 41 | 186 | 1.4 (1.0-1.9) |
| Practitioners in Western medicine (072) | 12 | 52 | 1.3 (0.7-2.4) |
| Nurses (075) | 16 | 61 | 1.5 (0.9-2.5) |
| Hygiene/anti-epidemic health workers (077) | 12 | 59 | 1.2 (0.7-2.5) |
| Community health care workers (078) | 4 | 22 | 1.4 (0.5-3.9) |
| Leaders of enterprise units (241-249) | 30 | 167 | 1.3 (0.9-1.9) |
| Administrative clerical workers (311-319) | 29 | 145 | 1.3 (0.9-1.9) |
| Office workers in administration (311) | 8 | 29 | 1.6 (0.8-3.3) |
| Secretaries (312) | 6 | 29 | 1.2 (0.5-2.9) |
| Postal and telecommunication workers (331-339) | 6 | 30 | 1.6 (0.7-3.6) |
| Purchasing and marketing personnel (421-429) | 22 | 97 | 1.7 (1.1-2.6) |
| Services workers (511-519) | 31 | 189 | 1.5 (1.0-2.2) |
| Service workers in restaurants (511) | 6 | 28 | 1.9 (0.8-4.3) |
| Service workers in hotels and guest houses (512) | 6 | 36 | 1.6 (0.7-3.7) |
| Ticket sellers (516) | 7 | 33 | 1.7 (0.8-3.7) |
| Nursery child care workers (517) | 10 | 73 | 1.3 (0.7-2.5) |
| Odd-job workers (520-529) | 34 | 250 | 1.5 (1.0-2.1) |
| Agriculture, forest, animal husband, and fish workers (611-619) | 89 | 632 | 1.2 (0.94-1.6) |
| Food crops farm workers (611) | 73 | 496 | 1.2 (0.9-1.6) |
| Cotton plantation workers (612) | 4 | 10 | 3.2 (1.1-8.8) |
| Leather and fur production workers (761-769) | 3 | 13 | 2.1 (0.6-6.6) |
| Tailoring and sewing workers (771-779) | 15 | 127 | 1.1 (0.7-1.9) |
| Sewing workers (772) | 11 | 87 | 1.2 (0.6-2.1) |
| Paper production workers (811-819) | 5 | 27 | 1.9 (0.7-4.6) |
| Forge and machine tool installation and operation | 39 | 319 | 1.1 (0.8-1.5) |
| workers (841-849) | 7 | 29 | 2.0 (0.8-4.7) |
| Fitters (842) | |||
| Power generation equipment operators (930-939) | 5 | 21 | 2.2 (0.9-5.5) |
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.