Simulated cohort data showing the ungrouped data structure for one subject who began exposure at age 42 and developed the disease of interest at age 64
| Observation | Case status | Person-time (years) | Age at risk | Cumulative exposure |
|---|---|---|---|---|
| 1 | 0 | 1 | 42 | 0.31391 |
| 2 | 0 | 1 | 43 | 0.62782 |
| 3 | 0 | 1 | 44 | 0.94173 |
| 4 | 0 | 1 | 45 | 1.25564 |
| 5 | 0 | 1 | 46 | 1.56955 |
| 6 | 0 | 1 | 47 | 1.88346 |
| 7 | 0 | 1 | 48 | 2.19737 |
| 8 | 0 | 1 | 49 | 2.51128 |
| 9 | 0 | 1 | 50 | 2.82519 |
| 10 | 0 | 1 | 51 | 3.13910 |
| 11 | 0 | 1 | 52 | 3.45301 |
| 12 | 0 | 1 | 53 | 3.76692 |
| 13 | 0 | 1 | 54 | 4.08083 |
| 14 | 0 | 1 | 55 | 4.39474 |
| 15 | 0 | 1 | 56 | 4.70865 |
| 16 | 0 | 1 | 57 | 5.02256 |
| 17 | 0 | 1 | 58 | 5.33647 |
| 18 | 0 | 1 | 59 | 5.65038 |
| 19 | 0 | 1 | 60 | 5.96429 |
| 20 | 0 | 1 | 61 | 6.27820 |
| 21 | 0 | 1 | 62 | 6.59211 |
| 22 | 0 | 1 | 63 | 6.90602 |
| 23 | 1 | 1 | 64 | 7.21993 |