Table 5 Frequency, age-adjusted risk and risk ratio of the occurrence of lung cancer, identified by death records, between baseline and 31 December 2005 by number of categories of adverse childhood experiences (ACEs) and smoking status among 16,901 adults
| Â | Â | Â | Relative risk of lung cancer* | |||
|---|---|---|---|---|---|---|
| Â | N | | Person- Time (yrs) | Deaths | | Mortality Rate** | Model A RR (95% CI) | Model B RR (95% CI) |
Categories of ACEs, No. | Â | Â | Â | Â | Â | Â |
   0 | 6124 | | 44,592 | 44 | | 26.0 | 1.00 (referent) | 1.00 (referent) |
   1 | 4411 | | 31,709 | 22 | | 19.3 | 0.80 (0.48-1.34) | 0.74 (0.44, 1.23) |
   2 | 2681 | | 19,045 | 22 | | 66.4 | 1.48 (0.89-2.49) | 1.30 (0.77, 2.18) |
   3 | 1599 | | 11,056 | 11 | | 51.3 | 1.52 (0.78-2.96) | 1.17 (0.59, 2.29) |
   4 or 5 | 1637 | | 11,259 | 8 | | 30.0 | 1.32 (0.61-2.83) | 1.00 (0.46, 2.16) |
   6, 7, or 8 | 449 | | 2901 | 4 | | 62.7 | 3.55 (1.25-10.09) | 2.34 (0.81, 6.75) |
| Â | Â | Â | Â | Â | P for trend = 0.025 | P for trend = 0.251 |
Smoking status | Â | Â | Â | Â | Â | Â |
   Never | 8589 | | 61,713 | 11 | | 8.5 |  | 1.00 (referent) |
   Former | 6879 | | 49,379 | 73 | | 58.0 |  | 5.92 (3.10-11.30) |
   Current,<20 cig/d | 870 | | 5748 | 10 | | 129.7 |  | 12.43 (5.23-29.57) |
   Current, >20 cig/d | 563 | | 3722 | 17 | | 357.1 |  | 28.15 (12.77-62.08) |
Total | 16,901 | | 120,562 | 111 | | 31.1 | Â | Â |