Page 540 - An Evidence Review of Active Surveillance in Men With Localized Prostate Cancer
P. 540

Appendix Table C4.4. Comparison between watchful waiting and other active treatments

                                        Author             Study name        Comparison  Outcome               Followup  Sample             Results                       Factors included in the model
                                        Year               /Database                         definition/       (yr)         size per
                                        Pubmed id                                            measurement                    group
                                                                                             instrument
                                        Prostate
                                        cancer-
                                        specific
                                        mortality
                                        Wong  208          SEER-             Active          Death from        12 yr        Active          HR=0.67 (0.58, 0.77)          PS: age at diagnosis, SEER site,
                                        2006               Medicare          treatment       prostate                       treatment:                                    year of diagnosis, tumor size, tumor
                                        17164454                             (RP or BT or    cancer based                   32,022                                        grade, marital status, residence in
                                                                             RT              on the cause                                                                 an urban setting, race, income,
                                        Retrospective                        considered      of death                       Observation:                                  educational achievement, and 44
                                        cohort                               in              reported in                    12,608                                        categorical variables encoding
                                                                             aggregate)      SEER. Data                                                                   comorbidities. The authors reported
                                                                             vs.             on cause-                                                                    a statistically significant interaction
                                                                             observation     specific                                                                     between tumor size and grade.
                                                                                             mortality were
                                                                                             available                                                                    For the association of treatment
                                                                                             through the                                                                  and survival in the entire cohort,
                                                                                             end of 2000.                                                                 estimates were adjusted for the PS
                                                                                                                                                                          and comorbidities, tumor grade,
                                                                                                                                                                          and tumor size as categorical
                                                                                                                                                                          variables.
                                        All-cause
                                        mortality
                                        Wong  208          SEER-             Active          Overall           12 yr        Active          HR=0.69 (0.66, 0.72);         PS: age at diagnosis, SEER site,
                                        2006               Medicare          treatment       survival =                     treatment:      stratified by PS quintile,    year of diagnosis, tumor size, tumor
                                        17164454                             (RP or BT or    interval from                  32,022          HR 0.67 (0.65-0.70)           grade, marital status, residence in
                                                                             RT              the date of                                                                  an urban setting, race, income,
                                        Retrospective                        considered      diagnosis to                   Observation:                                  educational achievement, and 44
                                        cohort                               in              the Medicare                   12,608                                        categorical variables encoding
                                                                             aggregate)      dare of death.                                                               comorbidities. The authors reported
                                                                             vs.             Patients were                                                                a statistically significant interaction
                                                                             observation     censored at                                                                  between tumor size and grade.
                                                                                             Dec. 20, 2002.
                                                                                                                                                                          For the association of treatment
                                                                                                                                                                          and survival in the entire cohort,
                                                                                                                                                                          estimates were adjusted for the PS
                                                                                                                                                                          and comorbidities, tumor grade,
                                                                                                                                                                          and tumor size as categorical
                                                                                                                                                                          variables.




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