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Table 7 Follow-up outcomes of the 66 studies as a function of theory

From: Effects of sixty six adolescent tobacco use cessation trials and seventeen prospective studies of self-initiated quitting

Theory # studies Quit % (#s) Quit 2% (#s) % reduct (#s) % reduct 2 (#s)
Motivation enhancement 9 19 (8) 18 (9) 27 (4) -
Contingency-based reinforced 5 16 (5) - 6 (2) 13 (3)
Social influences 11 12 (10) - 27 (5) -
Cognitive behavioral 16 11 (12) 11 (15) 32 (6) 44 (10)
Stage of change 7 11 (5) 12 (7) 13 (2) 24 (4)
Affect-oriented 2 9 (2) - 23 (1) -
Addiction/recovery 9 5 (3) 12 (9) 42 (4) 43 (7)
Supply reduction 7 0 (4) 0 (5) 15 (2) -
  1. Quit % (#s) = % quit at follow-up (# studies that provided data); Quit 2% (#s) = % quit at follow-up, and immediate posttest quit rates used if data is missing (# studies that provided data); % reduct (#s) = % reduction among non-quitters, at follow-up (# studies that provided data); % reduct 2 (#s) = % reduction among non-quitters at follow-up, and immediate posttest percentage reduction rates used if data is missing (# studies that provided data).