Incidence rates and hazard ratios for driver injury, by indicators of socioeconomic status
| Marital status | No of cases | Person-years | Incidence rate* | Hazard ratio (95% CI), Adjusted for:† | ||
|---|---|---|---|---|---|---|
| Age, sex, cohort | Age, sex, cohort, alcohol intake, driving exposure | Age, sex, cohort, alcohol intake, driving exposure, area of residence, BMI‡, occupational status | ||||
| *Cases per 10 000 person-years. | ||||||
| †Age and occupational status were fitted as continuous variables; sex (two levels), cohort (two levels), maximum daily alcohol intake (four levels), driving exposure (two variables: driving exposure estimated from the New Zealand Household Travel Survey, five levels; work related driving, four levels), area of residence (three levels), marital status (three levels), and body mass index (BMI, five levels) were fitted as categorical variables. | ||||||
| ‡BMI, body mass index. | ||||||
| §2.16 (95% CI 1.38 to 3.39) after adjustment for age, sex, cohort, and alcohol intake (see Discussion). | ||||||
| Never married | 45 | 15154 | 29.7 | 2.06 (1.35 to 3.16) | 2.17 (1.32 to 3.56)§ | 2.29 (1.39 to 3.76) |
| Married | 78 | 80446 | 9.7 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
| Divorced, separated, widowed | 12 | 12768 | 9.4 | 1.63 (0.88 to 3.01) | 1.67 (0.87 to 3.21) | 1.72 (0.88 to 3.33) |
| Missing | 4 | 373 | 107.2 | |||