| nsubs | nlost | nrisk | nevent | surv | |
| 0~1 | 338 | 0 | 338 | 64 | 1 |
| 1~2 | 274 | 4 | 272 | 41 | 0.810651 |
| 2~3 | 229 | 9 | 224.5 | 21 | 0.688457 |
| 3~4 | 199 | 12 | 193 | 20 | 0.624058 |
| 4~5 | 167 | 9 | 162.5 | 13 | 0.559389 |
| 5~6 | 145 | 14 | 138 | 13 | 0.514638 |
| 6~7 | 118 | 5 | 115.5 | 8 | 0.466157 |
| 7~8 | 105 | 8 | 101 | 9 | 0.433869 |
| 8~9 | 88 | 7 | 84.5 | 1 | 0.395208 |
| 9~10 | 80 | 4 | 78 | 8 | 0.390531 |
| 10~11 | 68 | 4 | 66 | 5 | 0.350476 |
| 11~12 | 59 | 3 | 57.5 | 5 | 0.323925 |
| 12~13 | 51 | 6 | 48 | 0 | 0.295758 |
| 13~14 | 45 | 2 | 44 | 8 | 0.295758 |
| 14~15 | 35 | 6 | 32 | 3 | 0.241984 |
| 15~16 | 26 | 3 | 24.5 | 4 | 0.219298 |
| 16~17 | 19 | 5 | 16.5 | 2 | 0.183494 |
| 17~18 | 12 | 2 | 11 | 1 | 0.161252 |
| 18~19 | 9 | 2 | 8 | 0 | 0.146593 |
| 19~20 | 7 | 2 | 6 | 2 | 0.146593 |
| 20~21 | 3 | 1 | 2.5 | 0 | 0.097729 |
| 21~22 | 2 | 0 | 2 | 1 | 0.097729 |
| 22~23 | 1 | 1 | 0.5 | 0 | 0.048864 |