OBJECTIVE: Clinical options for managing non-metastatic prostate cancer (PCa) vary. Each option has associated side-effects leading to difficulty in decision-making. This study aimed to assess the relationship between patient involvement in treatment decision-making and subsequent decision regret (DR), and quantify the impact of health-related quality of life (HRQL) outcomes on DR.
METHODS: Men living in the United Kingdom, 18-42 months post-diagnosis of PCa were identified from cancer registration data and sent a questionnaire. Measures included the Decision Regret Scale (DRS), Expanded Prostate cancer Index Composite short form (EPIC-26), EQ-5D-5 L and an item on involvement in treatment decision-making. Multivariable ordinal regression was utilised with DR categorised as none, mild or moderate/severe regret.
RESULTS: 17 193 men with stage I-III PCa completed the DRS: 36.6% reported no regret, 43.3% mild regret and 20.0% moderate/severe regret. The odds of reporting DR were greater if men indicated their views were not taken into account (OR = 6.42, 95%CI 5.39-7.64) or were involved "to some extent" in decision-making (OR = 4.63, 95%CI 4.27-5.02), compared to men who were "definitely" involved. After adjustment, including for involvement, men reporting moderate/big problems with urinary, bowel or sexual function were more likely to experience regret compared to men with no/small problems. Better HRQL scores were associated with lower levels of DR.
CONCLUSIONS: This large-scale study demonstrates the benefit of patient involvement in treatment decision-making for non-metastatic PCa. However, men experiencing side-effects and poorer HRQL report greater DR. Promoting engagement in clinical decision-making represents good practice and may reduce the risk of subsequent regret. This article is protected by copyright. All rights reserved.