Covariates
pneumonitis, tumor
PNEUMONITIS, TUMOR
Patient demographic and clinical characteristics included: patient sex, race, age at aNSCLC diagnosis, age at index treatment start date, stage at diagnosis, For patients in the RWD cohort who were determined to have been diagnosed with pneumonitis at any point in the baseline or follow-up periods, the following additional variables were captured by targeted chart review: type of pneumonitis (based on pneumonitis terms corresponding to the ICD code list), past radiotherapy with curative or palliative intent, timing of radiotherapy, duration, number of fractions, and total tumor dose of radiotherapy. For patients who were determined to have been diagnosed with treatment-associated pneumonitis, the use of corticosteroids for management of symptoms was captured.