When should quality of life be measured after radical cystectomy?

AIM: In this prospective study our aim was to establish the time it takes cystectomized patients' to adapt to their new health status. MATERIALS AND
METHOD: A total of 68 patients, having radical cystectomy for bladder cancer (64 males and 4 females) were enrolled in the study. The mean age of the group was 55.4 +/- 8.0 years (range 38-70 years). Continent urinary diversion was applied to 17 while the rest had incontinent urinary diversions. There was no statistical difference between those who had continent and incontinent diversions in regard to pre-operative stage. All patients were given a Beck's Depression Inventory (BDI), an EORTC-QLQ C-30 Version 2 (European Organization for Research on Treatment of Cancer Quality of Life Questionnaire C-30 Version 2) quality of life measurement scale pre-operatively, and post-operatively 3, 6, 12 and >12 months (every 6 months). Log-rank and Student's t-test was used for statistical analysis of the results.
RESULTS: The mean follow-up of the study group was 27.7 +/- 7.3 months (range 12-46 months). Five patients at the first 3rd-month control, seven at the 6th-month control and eight at the 12th-month control did not appear for interview, but their available results were also included in the overall assessment. The mean functional score of the study group, evaluated by QLQ C-30, was 80 +/- 25.4 pre-operatively. There is dramatic decrease at the 3rd-month control (56.9 +/- 25.1; p < 0.01). The overall functional score after 12 months (80 +/- 20) is back to the pre-operative value. The mean symptom score of the group pre-operatively was 29.5 +/- 16.7, which showed similar results at 3 and 6 months post-operatively of 29.8 +/- 16.7 and 30.6 +/- 19.4, respectively (p > 0.05). At the 12th-month and thereafter the symptom scores of the patients decreased significantly in comparison to both the pre-operative and the post-operative 3-6 months (23.4 +/- 13.7 and 21.8 +/- 18.5, respectively; p < 0.01 for all). The self-rating general health status of this group was lowest pre-operatively with a mean of 49.8 +/- 26.5. Interestingly, there was a statistically significant increase in the general health status assessment of the patients even at the early post-operative period of 3 months (61.4 +/- 17.2; p < 0.01). The increase in the well-being of the patients increased linearly until the 12th-month control and stabilized thereafter. There was a 23% pre-operative depression rate, which comes down to 16% at the 12th-month control. The peak depression scores suggesting depression are observed at the 3rd-month controls. There is a gradual decrease in depression score starting from the 6th-month controls and all reach minimum scores after 12 months. Ninety-six percent of the study group showed scores even lower than the pre-operative ones. The mean pre-operative and post-operative 12th-month control scores were 11.5 +/- 7.7, and 8.1 +/- 6.8, respectively (p < 0.01).
CONCLUSION: Both psychological and health-related quality of life measures come to baseline values and stabilize after the 12th-month period, suggesting that the time frame for the adaptation of patients is 12 months in patients undergoing radical cystectomy surgery. Therefore, we believe it is better to perform any quality of life assessment as an end-point criterion for comparison of treatment modalities in radical cystectomy patients after 12 months. Copyright 2002 Elsevier Science B.V.