Supplementary file 1: Immunotherapy versus standard chemotherapy for treatment of extensive-stage small-cell lung cancer: a systematic review

Supplementary Tables:

Table S1. Ongoing international clinical trials evaluating immunotherapy for ES-SCLC patients

Table S2. Quality assessment: risk of bias using the Cochrane Collaboration’s tool

Table S3. Additional characteristics of patients, with a comparison of immunotherapy and chemotherapy in the included trials

Table S4. Main outcomes of the included trials

Table S5. Summary of the data status for subgroup-analyses of OS among the included trials