Patient-reported pain and other quality of life domains as prognostic factors for survival in a phase III clinical trial of patients with advanced breast cancer.
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ABSTRACT: Patient-reported outcomes have been associated with survival in numerous studies across cancer types, including breast cancer. However, the Brief Pain Inventory-Short Form (BPI-SF) and the Rotterdam Symptom Checklist (RSCL) have rarely been investigated in this regard in breast cancer.Here we describe a post hoc analysis of the prognostic effect of baseline scores of these instruments on survival in a phase III trial of patients with advanced breast cancer who received gemcitabine plus paclitaxel or paclitaxel alone after anthracycline-based adjuvant or neoadjuvant therapy. The variables for this analysis were baseline BPI-SF "worst pain" and BPI-SF "pain interference" scores, and four RSCL subscales (each transformed to 0-100). Univariate and multivariate Cox models were used, the latter in the presence of 11 demographic/clinical variables. Kaplan-Meier curves and log-rank tests were used to compare survival for patients by BPI-SF or RSCL scores.Of 529 randomized patients, 286 provided BPI-SF data and 336 provided RSCL data at baseline. Univariate analyses identified BPI-SF worst pain and pain interference (both hazard ratios [HR], 1.07 for a 1-point increase; both p???0.0061) and three of four RSCL subscales [activity level, physical distress, and health-related quality of life (HRQOL) (HR, 0.86-0.91 for 10-point increase all p???0.0104)], to have significant prognostic effect for survival. BPI-SF worst pain (p?=?0.0342) and RSCL activity level (p?=?0.0004) were prognostic in the multivariate analysis. Median survival for patients categorized by BPI-SF worst pain score was 23.8 (n?=?91), 17.9 (n?=?94) and 14.6 (n?=?94) months for scores 0, 1-4, and 5-10, respectively (log-rank p?=?0.0065). Median survival was 23.8 and 14.6 months for patients (n?=?330) with above- and below-median RSCL activity level scores respectively (log-rank p?
SUBMITTER: Smyth EN
PROVIDER: S-EPMC4807577 | biostudies-literature | 2016 Mar
REPOSITORIES: biostudies-literature
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