Abrupt smoking cessation seems to be a better choice

Gradual Versus Abrupt Smoking Cessation: A Randomized, Controlled Noninferiority Trial – Annals of Internal Medicine (link to abstract – subscription required for full text)

Quitting Smoking Cold Turkey Better Than Quitting Gradually – Medscape commentary (free registration required)

Quitting Smoking Cold Turkey May Be Your Best Bet – The New York Times commentary (free full text)

Going “Cold Turkey” on Cigarettes Leads to Higher Quit Rates – NEJM Physician’s First Watch commentary (free full text)