Assessment of physical function by subjective and objective methods in patients undergoing open gynecologic surgery

Objective: To evaluate the utility of patient-reported outcomes (PROs) to measure physical functioning in perioperative care for patients with gynecological (GYN) tumors. Methods: 180 patients with GYN tumors undergoing open surgery participated in this longitudinal study. The physical functioning was measured by a subjective PRO tool, the Interference subscales of the MD Anderson Symptom Inventory (MDASI-I); as well as by an objective tool, the Timed Up & Go test (TUGT), perioperatively. Longer time (>20 s) needed to complete the TUGT was defined as “Prolonged”. Patients completed EuroQoL-5D as well. The association between the scores of MDASI-I items and TUGT was assessed via the Spearman correlation coefficient. The known-group validity was assessed using the t-test and Cohen's D effect size. Results: Compliance rates at preoperative, discharge and postoperative time points of MDASI-I were 98%, 95%, 96%; while TUGT completion rates were 92%, 75%, and 80%, respectively. Patients who had refused TUGT at discharge reported a significantly worse “MDASI-general activity” score compared to patients who completed TUGT (mean score of 7.00 vs. 5.38, P = 0.020). Patient-reported “Walking” on MDASI-I significantly differentiated patients with prolonged vs. those with frail/normal TUGT at discharge (mean score of 4.89 vs. 2.79, Cohen's d effect size = 0.82, P < 0.001). MDASI-I demonstrated excellent known-group validity per performance status and for the EuroQoL-5D subscales. Conclusion: Patient-reported physical functioning impairment after GYN surgery correspond with observed worse scores of the objective functioning measure test (TUGT). MDASI-I assessment represents a feasible and valid tool to evaluate functional status and warrants further implementation in the perioperative setting.