Comparison Between Health Insurance Claims and Electronic Health Records (EHRs) for Metastatic Non-small-cell Lung Cancer (NSCLC) Patient Characteristics and Treatment Patterns: A Retrospective Cohort Study.

LoTs between the claims and EHR cohorts were comparable and showed similar treatment patterns. Traditional platinum-containing chemotherapy was most common in LoT1, whereas programmed cell death protein-1 inhibitors became the most common choices in LoT2. Our findings suggest that RWD can reliably provide up-to-date insight into current treatment modalities and indicate that new clinical evidence is rapidly adopted in patients with NSCLC.