Ischaemic heart disease mortality odds ratio by duration of employment and site
| Years employed | n | Crude OR | Adj* OR (95% CI) | Adj† OR (95% CI) |
|---|---|---|---|---|
| *Model included five pre-employment measures and duration of employment. | ||||
| †Model included five pre-employment measures, four-category NIL85 variable and duration of employment. | ||||
| Both sites | ||||
| <5 | 862 | Baseline | ||
| 5–9.9 | 283 | 1.17 | 1.15 (0.84–1.58) | 1.10 (0.79–1.54) |
| 10–14.9 | 272 | 1.27 | 1.21 (0.86–1.71) | 1.16 (0.80–1.68) |
| 15–19.9 | 295 | 1.04 | 1.01 (0.71–1.45) | 0.99 (0.66–1.47) |
| 20–24.9 | 248 | 1.25 | 1.26 (0.86–1.83) | 1.24 (0.82–1.89) |
| 25+ | 242 | 1.08 | 1.04 (0.71–1.52) | 1.04 (0.68–1.59) |
| Site A | ||||
| <5 | 468 | Baseline | ||
| 5–9.9 | 143 | 0.87 | 0.86 (0.54–1.36) | 0.87 (0.52–1.46) |
| 10–14.9 | 138 | 1.05 | 0.98 (0.59–1.62) | 1.08 (0.61–1.91) |
| 15–19.9 | 142 | 0.80 | 0.77 (0.47–1.24) | 0.89 (0.50–1.60) |
| 20–24.9 | 117 | 1.05 | 1.03 (0.61–1.72) | 1.24 (0.67–2.28) |
| 25+ | 90 | 0.91 | 0.84 (0.47–1.49) | 1.05 (0.53–2.07) |
| Site B | ||||
| <5 | 394 | Baseline | ||
| 5–9.9 | 140 | 1.58 | 1.57 (1.00–2.46) | 1.47 (0.93–2.32) |
| 10–14.9 | 134 | 1.58 | 1.58 (0.97–2.59) | 1.41 (0.84–2.35) |
| 15–19.9 | 153 | 1.42 | 1.49 (0.86–2.58) | 1.29 (0.72–2.30) |
| 20–24.9 | 131 | 1.47 | 1.59 (0.91–2.79) | 1.37 (0.75–2.50) |
| 25+ | 152 | 1.23 | 1.27 (0.74–2.17) | 1.10 (0.62–1.95) |