Table 4.
Median survival times (mo) and cumulative survival incidences in 2 tumor number groups (2-4 vs 5-15 tumors, according to 5-year periods)
| Tumor no. | n | MST/95% CI | Cumulative incidence (no. at risk) |
HR/95% CI | P value | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 12 mo | 24 mo | 36 mo | 48 mo | 60 mo | ||||||
| July 1998-June 2003 | 2-4 | 287 | 7.4/6.1-8.1 | 0.289 (84) | 0.100 (29) | 0.054 (16) | 0.046 (13) | 0.038 (10) | 1.202/1.000-1.446 | .0499 |
| 5-15 | 194 | 5.4/4.5-6.5 | 0.242 (48) | 0.080 (16) | 0.021 (5) | 0.021 (5) | 0.011 (3) | |||
| July 2003-June 2008 | 2-4 | 352 | 7.6/6.7-9.6 | 0.352 (126) | 0.168 (60) | 0.091 (33) | 0.068 (25) | 0.034 (13) | 1.237/1.062-1.469 | .0061 |
| 5-15 | 333 | 6.9/5.7-7.7 | 0.258 (88) | 0.091 (31) | 0.045 (16) | 0.030 (11) | 0.015 (6) | |||
| July 2008-June 2013 | 2-4 | 266 | 7.4/6.6-8.7 | 0.343 (91) | 0.154 (41) | 0.090 (24) | 0.057 (14) | 0.048 (12) | 1.124/0.939-1.347 | .2033 |
| 5-15 | 235 | 7.0/5.7-7.8 | 0.300 (71) | 0.139 (33) | 0.062 (14) | 0.033 (8) | 0.033 (7) | |||
| July 2013-June 2018 | 2-4 | 245 | 16.4/11.6-22.8 | 0.566 (92) | 0.409 (43) | 0.322 (19) | 0.277 (9) | 0.202 (2) | 0.971/0.728-1.295 | .8400 |
| 5-15 | 177 | 17.6/10.4-26.3 | 0.547 (54) | 0.422 (28) | 0.273 (9) | 0.234 (5) | 0.176 (2) | |||
Abbreviations: CI = confidence interval; HR = hazard ratio.