Publicly available network meta-analysis data set (summarised by treatment type) re-analysed in "A new approach to evaluating loop inconsistency in network meta-analysis", Turner et al., Statistics in Medicine 2023. The data were originally published in: https://doi.org/10.1177/0272989X9801800110

The variables included are study (study number), treat (treatment number), events (successful cessation of smoking at 6-12 months), total (total number of patients).