ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2026
From questionnaires to single items: independent use of a walking measure in patients after thoracic surgery.
Article in Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeRegular and flexible assessments of patients' physical status remain a significant challenge in clinical care and treatment. Whether measurement items in established Patient-reported outcome (PRO) questionnaires can be used independently to assess physical status remains unclear. This study aimed to evaluate the clinimetric validity of the independent use of a single-item walking measure.
methodsParticipants were recruited from a prospective cohort of patients undergoing lung surgery. On postoperative days 1 and 2 (POD 1 and 2), the patients' physical condition was assessed using the Perioperative Symptom Assessment for Lung surgery (PSA-Lung) and the single-item walking measure (SI-walking) derived from these questionnaire. A one-hour washout period separated the assessments. The objective measure of Timed Up and Go Test (TUGT) was performed on POD2.
resultsOf the 214 patients, 181 and 117 completed PSA-Lung and SI-walking on POD1 and POD2, respectively. The mean SI-walking score was higher than the mean PSA-Lung walking (MI-walking) score (4.44 ± 2.38 vs 3.64 ± 2.66, P < 0.001, Cohen's d effect size [ES] = 0.26). TUGT was completed by 111 patients with an average time of 15.17 ± 4.01 s. TUGT had a greater correlation with SI-walking (R
conclusionsThe SI-walking scale demonstrates validity for measuring physical status. The independent use of a single-item walking measure from an established PRO questionnaire is valid in patients after thoracic surgery.
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