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Original data set (ncaco) for three matched sets for a nested case-control study
| id | matchid | cancer | age | alcohol | asp |
|---|---|---|---|---|---|
| 1 | 1 | 0 | 56 | 0.15 | 0 |
| 2 | 1 | 0 | 56 | 2.29 | 1 |
| 3 | 1 | 1 | 56 | 0.85 | 0 |
| 4 | 2 | 0 | 71 | 2.29 | 1 |
| 5 | 2 | 0 | 71 | 0.15 | 1 |
| 6 | 2 | 2 | 71 | 2.29 | 1 |
| 7 | 3 | 0 | 53 | 0.85 | 0 |
| 8 | 3 | 0 | 53 | 0 | 1 |
| 9 | 3 | 3 | 53 | 0.85 | 0 |
