Treatment Patterns and Postoperative Activities of Daily Living in Patients with Non-small Cell Lung Cancer: A Retrospective Study Using Nationwide Health Services Utilization Data in Japan.

ABSTRACT

BACKGROUND: The number of older patients with cancer has been increasing. This study aimed to determine the proportion of postoperative decline in activities of daily living (ADL), hospital mortality rate, home healthcare services use, and adjuvant chemotherapy treatment patterns of patients with early-stage non-small cell lung cancer (NSCLC) across age groups. METHODS: We analyzed health service utilization data of patients aged ≥ 40 years diagnosed with clinical stage I or II NSCLC in 2015 who underwent thoracoscopy or thoracotomy. The Barthel index was used to determine the proportions of patients aged 40-64, 65-74, ≥ 75 years who experienced a decline in the ADL of ≥ 10 points at postoperative discharge compared to the ADL at admission. RESULTS: Overall, 19,780 patients were analyzed. The proportion of patients with ADL decline slightly increased with increasing age 1.1%, 1.6%, and 3.5% after thoracoscopic surgery, and 1.4%, 2.8%, and 4.8% after thoracotomy among those aged 40-64, 65-74, and ≥ 75 years, respectively. The hospital mortality rate and proportion of home healthcare services use was fewer than 10 cases, or < 2%. The unexpected readmission rate was slightly higher among those aged ≥ 75 years (3.7% for thoracoscopic surgery, 4.7% for thoracotomy) than among those aged 40-64 years (1.8% for thoracoscopic surgery, 2.5% for thoracotomy). CONCLUSION: The difference in the proportion of patients with ADL decline between those aged 40-64 and ≥ 75 years was approximately 3%. This study provides practical information for clinicians involved in the care of older patients who undergo thoracic surgery.