After a 3 year study 51% reported continuing abstinence. 

Moshammer, H., & Neuberger, M. (2007). Long term success of short smoking cessation seminars supported by occupational health care. Addictive Behaviors, 32(7), 1486-1493

UK 12 month Randomised Clinical Trial finds Allen Carr’s Easyway as good as, if not better than, the Gold Standard NHS Programme which uses champix, NRT & 1-1 psychological support 

Frings D, Albery IP, Moss AC, Brunger H, Burghela M, White S, and Wood KV (2020) Comparison of Allen Carr’s Easyway programme with a specialist behavioural and pharmacological smoking cessation support service: A randomised controlled trial. https://onlinelibrary.wiley.com/doi/10.1111/add.14897

Smokers following Allen Carr’s Easyway were about 6 times more likely to be abstinent, assessed after 13 months, compared to similar smokers in the general population.

Dijkstra, A., Zuidema, R., Vos, D., Van Kalken, M., The effectiveness of the Allen Carr smoking cessation training in companies tested in a quasi-experimental design. BMC Public Healthvolume 14, Article number: 952 (2014)

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