Distribution of occupational categories, age, and job characteristics among cases and controls, age adjusted odds ratios and 95% confidence intervals
| Cases | (n = 203) | Controls | (n = 287) | Age adjusted | Odds ratio | |
|---|---|---|---|---|---|---|
| Number | % | Number | % | OR | 95% CI | |
| *Referent category, craft and related trades workers (7th occupational category); †SEM, standard error of mean; ‡job strain, ratio of job demands to control. | ||||||
| Occupational categories | ||||||
| 0 Armed forces | – | – | 5 | 1.7 | – | – |
| 1 Legislators, senior officials and managers | 30 | 14.8 | 27 | 9.4 | 1.93 | 1.07 to 3.50 |
| 2 Professionals | 22 | 10.8 | 36 | 12.5 | 1.06 | 0.58 to 1.94 |
| 3 Technicians and associate professionals | 15 | 7.4 | 18 | 6.3 | 1.42 | 0.67 to 3.01 |
| 4 Clerks | 1 | 0.5 | 2 | 0.7 | – | – |
| 5 Service, shop, and market sales workers | 2 | 1.0 | 6 | 2.1 | – | – |
| 6 Skilled agricultural workers | 1 | 0.5 | – | – | – | – |
| 7 Craft and related trades workers* | 73 | 36.0 | 127 | 44.3 | 1.0 | |
| 8 Plant and machine operators and assemblers | 54 | 26.5 | 60 | 20.9 | 1.58 | 0.99 to 2.52 |
| 9 Elementary occupations | 5 | 2.5 | 6 | 2.1 | 1.45 | 0.43 to 4.92 |
| Mean | SEM† | Mean | SEM† | |||
| Age (y) | 53.9 | 0.53 | 52.2 | 0.49 | ||
| Psychosocial work environment | ||||||
| Job control (6–24) | 13.2 | 0.18 | 14.2 | 0.18 | ||
| Job demands (5–20) | 10.6 | 0.16 | 11.3 | 0.12 | ||
| Job strain‡ | 0.82 | 0.01 | 0.83 | 0.01 | ||