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. 2001 Jul 23;2001(3):CD000546. doi: 10.1002/14651858.CD000546.pub2

Lando 1975.

Methods Randomized study 
 Therapists: All treatments run by the same therapist 
 Treatment: groups of 5‐10, 6 sessions over 1w
Participants Cigarettes/day: 32. Age: 31
Interventions 1. Puff every 6 secs, 3x3 mins, at home do this with a portable timer. 
 2. Puff every 30 secs, all else the same ('control') 
 3. Continuous smoking for 25 mins, at home smoke twice the usual number ('excessive smoking')
Outcomes Follow up contacts: 1w, 1m, 2m and 12m 
 Outcome: Abstinence at 12m 
 Validation: Random sample invited for interviews and given CO test at 2m. Number/proportion attended, CO cut‐off point or results not given.
Notes Inclusion: 1 vs 2 in Rapid Smoking analysis. 1 vs 3 in Dose‐Response analysis 
 Notes: Incomplete validation, no data on continuous abstinence and outcome assessor not blind.