Table A1:
Research Sample Selection based on Assignment Method for Missing Smoking Values
| Assumptions about smoking behaviors used to determine research sample |
Lifetime smoking observed (%of individuals) |
Smoking values missing (%of person-years) |
Resulting sample size |
Research sample name |
|---|---|---|---|---|
| Begin with original sample of males who have at least two consecutive exams (N=2274). Use reported per-exam smoking info | 27.4 | 22.5 | 622 | A |
| + fill in missing per-exam smoking values with data from subsequent retrospective questions | 32.5 | 19.9 | 739 | B |
| + fill in up to 4 consecutive missing values when same smoking choice observed before & after missing spell | 55.1 | 13.2 | 1253 | C |
| + fill in all missing values when at least 50% of smoking choices are observed and that smoking behavior is the same | 55.6 | 12.9 | 1265 | D |
| + fill in missing values before death when at least 3 consecutive exams of the same smoking behavior is observed before death | 77.1 | 8.1 | 1754 | E |
| + fill in missing values before death with last observed smoking choice before death | 85.1 | 4.2 | 1935 | F |