Missing Data and Sensitivity Analyses
Of the 128 enhanced control patients who completed a 3-month postoperative survey, 118 completed the FACIT questionnaire and 109 completed PROMIS-29. Among the 141 intervention patients who completed the 3-month postoperative survey, 104 completed the FACIT questionnaire and 87 completed the PROMIS-29. When outcomes were imputed at 3 months, 147 enhanced control patients completed at least 1 patient-reported HRQOL survey and 152 intervention patients completed at least 1 patient-reported HRQOL survey postoperatively. For the sensitivity analysis comparing patient-reported HRQOL at 3 months postoperatively between the 2 arms, among only patients who answered the 3-month survey (ie, no imputed data: enhanced control, 128; intervention, 141), the results were nearly identical with no significant differences between arms. For the sensitivity analysis using linear mixed models, there were again no significant differences between the 2 arms for FACIT-Pal (−1.79; 95% CI, −7.12 to 3.55; 