Duration (years) | Cases (n)‡ | Cont (n)‡ | OR | 95% CI | p Value (trend test) | ||
Occupation, men | |||||||
A priori high-risk occupations | |||||||
SOC 141 | Accountants, auditors and other financial specialists | <5 | 7 | 13 | 0.6 | 0.2 to 1.5 | |
5–<15 | 6 | 17 | 0.5 | 0.2 to 1.4 | |||
15+ | 9 | 21 | 0.5 | 0.2 to 1.1 | 0.045 | ||
SOC 464 | Information clerks | <5 | 8 | 8 | 1.5 | 0.5 to 4.2 | |
≥5 | 5 | 1 | 14.5 | 1.6 to 129 | 0.011 | ||
SOC 61 | Mechanics and repairers | <5 | 60 | 65 | 1.1 | 0.8 to 1.6 | |
5–<15 | 65 | 71 | 1.1 | 0.8 to 1.6 | |||
15+ | 92 | 76 | 1.7 | 1.2 to 2.4 | 0.0030 | ||
SOC 611 | Vehicle and mobile equipment mechanics and repairers | <5 | 41 | 41 | 1.4 | 0.9 to 2.2 | |
5–<15 | 38 | 37 | 1.2 | 0.7 to 2.0 | |||
≥15 | 40 | 32 | 2.1 | 1.3 to 3.5 | 0.0023 | ||
SOC 6111 | Automobile mechanics | <5 | 25 | 22 | 1.4 | 0.7 to 2.5 | |
5–<15 | 17 | 12 | 1.6 | 0.7 to 3.4 | |||
≥15 | 17 | 12 | 2.1 | 0.98 to 4.6 | 0.030 | ||
SOC 645 | Plumbers, pipefitters and steamfitters | <5 | 11 | 10 | 1.0 | 0.4 to 2.5 | |
5–<15 | 8 | 10 | 1.2 | 0.4 to 2.7 | |||
15+ | 14 | 5 | 3.3 | 1.1 to 9.6 | 0.032 | ||
SOC 681–2 | Precision metalworkers | <5 | 14 | 11 | 1.9 | 0.8 to 4.3 | |
5–<10 | 19 | 12 | 2.4 | 1.1 to 5.1 | |||
10+ | 20 | 14 | 2.2 | 0.98 to 4.6 | 0.0065 | ||
SOC 75 | Machine operators and tenders (metal and plastic) | <5 | 33 | 29 | 1.6 | 0.95 to 2.8 | |
5–<10 | 10 | 12 | 0.8 | 0.3 to 2.0 | |||
10+ | 15 | 9 | 2.8 | 1.2 to 6.6 | 0.023 | ||
SOC 751–2 | Metalworking/plasticworking machine operators/tenders | <5 | 26 | 22 | 1.5 | 0.8 to 2.7 | |
5–<10 | 8 | 6 | 1.4 | 0.4 to 4.1 | |||
10+ | 13 | 7 | 2.4 | 0.9 to 6.3 | 0.047 | ||
SOC 765 | Textile/apparel/furnishing machine operators/tenders | <5 | 24 | 18 | 1.6 | 0.8 to 3.1 | |
5–<10 | 9 | 9 | 1.2 | 0.4 to 3.1 | |||
10+ | 13 | 2 | 10.3 | 2.2 to 48 | 0.0013 | ||
A posteriori high-and low-risk occupations | |||||||
SOC 1712 | Computer systems analysts | <10 | 5 | 2 | 2.7 | 0.5 to 15 | |
10+ | 8 | 2 | 6.3 | 1.2 to 33 | 0.021 | ||
Occupation, women | |||||||
A priori high-risk occupations | |||||||
SOC 523 | Health service occupations | <5 | 14 | 19 | 1.6 | 0.7 to 3.5 | |
5–<10 | 14 | 10 | 3.0 | 1.2 to 7.3 | |||
10+ | 10 | 7 | 4.4 | 1.5 to 12 | 0.0013 | ||
SOC 524 | Cleaning and building service occupations, except private household | <5 | 12 | 9 | 3.0 | 1.2 to 7.9 | |
5+ | 16 | 10 | 4.4 | 1.7 to 11 | 0.0010 | ||
A posteriori high- and low-risk occupations | |||||||
SOC 14 | Management-related occupations | <10 | 10 | 16 | 1.6 | 0.7 to 3.9 | |
10+ | 10 | 4 | 7.1 | 2.0 to 25 | 0.0018 | ||
SOC 479 | Miscellaneous administrative support occupations, including clerical | <5 | 11 | 27 | 0.5 | 0.2 to 1.2 | |
5–<15 | 5 | 11 | 0.4 | 0.1 to 1.4 | |||
15+ | 1 | 8 | 0.2 | 0.02 to 1.6 | 0.043 | ||
SOC 52 | Service occupations, except private household and protective | <5 | 55 | 74 | 1.4 | 0.9 to 2.3 | |
5–<15 | 40 | 42 | 1.7 | 1.01 to 2.9 | |||
15+ | 30 | 36 | 1.9 | 1.06 to 3.5 | 0.031 | ||
Industry, men | |||||||
SIC 078 | Landscape and horticultural services | <5 | 9 | 9 | 1.8 | 0.7 to 4.7 | |
5+ | 16 | 5 | 3.3 | 1.1 to 9.6 | 0.023 | ||
SIC 6531 | Real estate agents and managers | <5 | 6 | 13 | 0.5 | 0.2 to 1.4 | |
5–<10 | 6 | 5 | 1.4 | 0.4 to 4.9 | |||
10+ | 4 | 16 | 0.2 | 0.1 to 0.7 | 0.011 | ||
SIC 805 | Nursing and personal care facilities | <5 | 4 | 4 | 1.4 | 0.3 to 6.0 | |
5+ | 0 | 11 | – | – | 0.037 | ||
Industry, women | |||||||
SIC 367 | Electronic components and accessories industry | <5 | 11 | 9 | 1.6 | 0.6 to 4.3 | |
5+ | 14 | 6 | 3.3 | 1.1 to 9.9 | 0.028 | ||
SIC 37 | Transportation equipment industry | <5 | 7 | 0 | – | – | |
5+ | 5 | 3 | 5.2 | 0.98 to 28 | 0.023 | ||
SIC 822 | Colleges, universities, professional school, junior college | 5 | 11 | 20 | 0.8 | 0.3 to 1.8 | |
5–<15 | 5 | 7 | 0.7 | 0.2 to 2.5 | |||
15+ | 0 | 19 | – | – | 0.0079 | ||
SIC 8221 | Colleges and universities | 5 | 11 | 18 | 0.9 | 0.4 to 2.2 | |
5–<15 | 5 | 9 | 0.5 | 0.1 to 1.7 | |||
15+ | 0 | 16 | – | – | 0.012 |
↵* Table includes only SOC and SIC codes with a significant association in table 1 or table 2 and a significant trend in risk with duration of employment. Plumbers (SOC 645) are included despite the lack of statistical significance in table 1 because this is an a priori high-risk occupation with a significant trend in risk with duration of employment.
↵† Adjusted for age (<55, 55–64, 65–74, 75+ years), race (white only, Native American/white, other races), Hispanic ethnicity (yes/no), state (Maine, New Hampshire, Vermont), smoking status (never, occasional (<100 cigarettes over lifetime), former, current) and employment in high-risk occupations other than the one being analysed (ever/never).
↵‡ Number of men or women employed in each occupation or industry for the specified duration.
Cont, Controls; SIC, Standard Industrial Classification; SOC, Standard Occupational Classification.