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Table 1 Summary of Patient Numbers in the Study Population and Reasons for Exclusion (Study Attrition)

From: Retrospective analysis of real-world treatment patterns and clinical outcomes in patients with advanced non-small cell lung cancer starting first-line systemic therapy in the United Kingdom

  Patients
n %
Adults who received 1 L treatment for NSCLC 1257
Excluded patients 254 100
 NSCLC not advanced or metastatic at diagnosis 151 59.4
 Treatment started outside of study period 47 18.5
 ECOG PS score missing 15 5.9
 Randomized trial participant 9 3.5
 Response data missing 8 3.1
 Never received treatment 7 2.8
 Duplicate patient 5 2.0
 Age missing 4 1.6
 Sex missing 3 1.2
 Not NSCLC 2 0.8
 Date of death or last hospital follow-up missing 1 0.4
 Histological diagnosis missing 1 0.4
 Diagnosis date unknown 1 0.4
Met inclusion criteria 1003
  1. 1 L first line; ECOG PS Eastern Cooperative Oncology Group performance status; NSCLC non-small cell lung cancer