Time yrs | Cumulative survival of the study population % (95% CI) | NIH estimated survival % (95% CI) |
1 | 79 (69–88) | 68 (58–79) |
2 | 70 (60–81) | 55 (44–66) |
3 | 59 (48–71) | 46 (35–57) |
4 | 59 (48–71) | 38 (27–49) |
5 | 49 (33–65) | 32 (22–43) |
CI: confidence interval. #: according to the National Institutes of Health (NIH) survival probability formula [25]. Reproduced from [24], with permission from the publisher.