Supplementary for the processes of change psychometric analysis
Comparison between the adolescent process questionnaire and the adult questionnaire
Process / Q no / Adolescent question / Adult questionCC / 1 / When I am tempted to smoke, I think about something else / When I am tempted to smoke, I think about something else.
CC / 11 / I do something else instead of smoking / I do something else instead of smoking when I need to relax
CR / 2 / I remember having read things about giving up smoking / I recall information people have given me on the benefits of quitting smoking
CR / 12 / I think about information I have read about how to stop smoking / I react emotionally to warnings about smoking cigarettes
DR / 3 / I get upset when I hear or read about illnesses caused by smoking / I react emotionally to warnings about smoking cigarettes
DR / 13 / Warnings about health risks of smoking upset me / Warnings about the health hazards of smoking move me emotionally
ER / 4 / I consider the view that smoking harms the environment / I consider the view that smoking can be harmful to the environment
ER / 14 / I stop to think that smoking pollutes the environment / I stop to think that smoking is polluting the environment
HR / 5 / Someone is there to listen when I need to talk about my smoking / I have someone who listens when I need to talk about my smoking
HR / 15 / I have someone I can count on when I’m having problems with smoking / I have someone I can count on when I'm having problems with smoking
RM / 6 / I think that I have more friends when I don’t smoke / I can expect to be rewarded by others if I don't smoke
RM / 16 / I think that I am more popular when I don’t smoke / I am rewarded by others if I don't smoke
SC / 7 / I try to avoid teenagers who are smokers / I keep things around my home or place of work that remind me not to smoke
SC / 17 / I stay away form places that remind me of smoking / I remove things form my home or place of work that remind me of smoking
SL / 8 / I promise myself I won’t smoke / I tell myself I can quit smoking if I want to
SL / 18 / I tell myself that if I try hard enough I won’t need a cigarette / I tell myself that if I try hard enough I can keep from smoking
SO / 9 / I find people changing in ways that make it easier for the non-smoker / I find society changing in ways that make it easier for non-smokers
SO / 19 / I notice that many teenagers have chosen not to smoke / I notice that non-smokers are asserting their rights
SR / 10 / I am disappointed in myself because I smoke / My need for cigarettes makes me feel disappointed in myself
SR / 20 / I get upset when I think about my smoking / I get upset when I think about my smoking
Means and SDs for POC scales on the first occasion
PC(N=263) / C
(N=207) / P
(N=137) / A
(N=311) / M
(N=242)
Mean / SD / Mean / SD / Mean / SD / Mean / SD / Mean / SD
Experiential processes
Consciousness raising / 2.36 / 1.05 / 2.85 / 0.93 / 3.07 / 1.05 / 2.97 / 1.15 / 2.99 / 1.26
Dramatic relief / 2.40 / 1.15 / 3.00 / 1.03 / 3.34 / 1.04 / 3.19 / 1.10 / 3.30 / 1.26
Environmental re-evaluation / 2.29 / 1.09 / 2.72 / 1.08 / 3.04 / 1.09 / 3.02 / 1.19 / 3.27 / 1.26
Social liberation / 2.18 / 1.00 / 2.59 / 0.82 / 2.91 / 0.88 / 2.81 / 1.00 / 3.06 / 1.09
Self-re-evaluation / 1.98 / 1.00 / 2.81 / 1.05 / 3.41 / 0.91 / 3.04 / 1.17 / 2.97 / 1.35
Behavioural processes
Helping relationships / 2.29 / 1.20 / 2.49 / 1.24 / 2.69 / 1.29 / 2.56 / 1.32 / 2.73 / 1.36
Stimulus control / 1.54 / 0.86 / 1.80 / 0.80 / 2.14 / 0.98 / 2.44 / 1.13 / 2.80 / 1.33
Counter conditioning / 2.40 / 0.98 / 2.83 / 0.86 / 3.05 / 0.76 / 3.28 / 0.97 / 3.38 / 1.12
Reinforcement management / 1.78 / 0.95 / 2.10 / 1.00 / 2.38 / 1.11 / 2.80 / 1.22 / 3.23 / 1.33
Self-liberation / 2.02 / 1.00 / 2.81 / 0.96 / 3.39 / 0.95 / 3.49 / 1.14 / 3.71 / 1.30
1 Scored on a scale of 1-5.
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Supplementary for the processes of change psychometric analysis
Results for time2 and time 3
Fig._time2: cessation process of change structure (time 2 data)
Fig._time3: cessation process of change structure (time 3 data)
Tabe_des_time2: Descriptive statistics of process of change for cessation stage of change time 2
PC226 / C
167 / P
93 / A
295 / M
197
Mean / SD / Mean / SD / Mean / SD / Mean / SD / Mean / SD
Experiential processes of change
Consciousness raising / 2.42 / 1.00 / 2.72 / 1.13 / 3.25 / 1.04 / 2.88 / 1.17 / 2.96 / 1.32
Dramatic relief / 2.54 / 1.10 / 2.87 / 1.24 / 3.59 / 1.09 / 3.22 / 1.21 / 3.31 / 1.30
Environmental reevaluation / 2.15 / 1.04 / 2.61 / 1.21 / 3.20 / 1.16 / 2.96 / 1.21 / 3.23 / 1.28
Social liberation / 2.21 / 0.95 / 2.47 / 0.87 / 2.89 / 0.89 / 2.78 / 0.95 / 3.09 / 1.17
Self-reevaluation / 2.18 / 1.03 / 2.85 / 1.11 / 3.54 / 1.09 / 2.91 / 1.20 / 2.95 / 1.42
Behavioral processes of change
Helping relationships / 2.19 / 1.27 / 2.39 / 1.23 / 2.64 / 1.30 / 2.43 / 1.28 / 2.64 / 1.37
Stimulus control / 1.59 / 0.84 / 1.88 / 0.86 / 2.24 / 0.86 / 2.30 / 1.17 / 2.97 / 1.38
Counter conditioning / 2.42 / 0.96 / 2.75 / 0.87 / 3.11 / 0.91 / 3.25 / 1.05 / 3.36 / 1.16
Reinforcement management / 1.93 / 1.00 / 1.99 / 0.97 / 2.27 / 1.09 / 2.67 / 1.23 / 3.30 / 1.39
Self-liberation / 2.26 / 1.07 / 2.99 / 1.09 / 3.68 / 1.05 / 3.43 / 1.19 / 3.75 / 1.33
Table-GLM-time3:GLM test with post-hoc Tukey test for cessation processes of change for time 2 data
Processes of change / F-value / η2 / Tukey patternExperiential processes of change
Consciousness raising / F(4, 973)=11.43** / .045 / PC = C < P = A = M
Dramatic relief / F(4, 973)=19.88** / .076 / PC = C < P = A = M
Environmental reevaluation / F(4, 973)=28.79** / .106 / PC < C < P = A = M
Social liberation / F(4, 973)=24.98** / .093 / PC = C < P = A < M
Self-reevaluation / F(2, 973)=25.75** / .096 / PC < C < P < A = M
Behavioral processes of change
Helping relationships / F(4, 973)=3.98** / .016 / PC = C = P = A = M
Stimulus control / F(4, 973)=47.72** / .164 / PC = C < P = A < M
Counter conditioning / F(4, 973)=32.14** / .117 / PC < C < P = A = M
Reinforcement management / F(4, 973)=47.57** / .164 / PC = C = P < A < M
Self-liberation / F(4, 973)=56.05** / .187 / PC < C < P = A < M
** p <0.01,
< adjacent stage comparison are statistically significant
= adjacent stage comparison not statistically significant
Wilks' Lambda= 0.635 F(40,3657.231) = 11.62, p=0.000
Fig-smk-2: experiential processes of change utilization across stage of change time2
Fig-smk-2: Behavioral processes of change utilization across stage of change time2
Tabe_des_time3: Descriptive statistics of process of change for cessation stage of change time 3
PC194 / C
136 / P
68 / A
297 / M
137
Mean / SD / Mean / SD / Mean / SD / Mean / SD / Mean / SD
Experiential processes of change
Consciousness raising / 2.27 / 1.10 / 2.91 / 1.05 / 3.01 / 1.00 / 2.86 / 1.29 / 3.16 / 1.30
Dramatic relief / 2.41 / 1.24 / 3.44 / 1.12 / 3.24 / 1.03 / 3.24 / 1.26 / 3.45 / 1.26
Environmental reevaluation / 2.14 / 1.17 / 2.67 / 1.26 / 2.79 / 1.19 / 2.99 / 1.29 / 3.50 / 1.26
Social liberation / 2.14 / 0.94 / 2.65 / 0.97 / 2.75 / 0.80 / 2.93 / 1.06 / 3.20 / 1.17
Self-reevaluation / 2.14 / 1.17 / 3.18 / 1.18 / 3.38 / 0.99 / 3.00 / 1.27 / 3.02 / 1.44
Behavioral processes of change
Helping relationships / 2.07 / 1.27 / 2.53 / 1.33 / 2.66 / 1.30 / 2.54 / 1.41 / 2.98 / 1.38
Stimulus control / 1.49 / 0.80 / 2.02 / 1.08 / 2.07 / 0.88 / 2.28 / 1.20 / 2.85 / 1.41
Counter conditioning / 2.20 / 0.99 / 2.96 / 0.94 / 2.93 / 0.94 / 3.35 / 1.08 / 3.64 / 1.16
Reinforcement management / 1.73 / 1.00 / 2.13 / 1.16 / 2.11 / 1.00 / 2.70 / 1.31 / 3.59 / 1.37
Self-liberation / 2.14 / 1.10 / 3.22 / 1.19 / 3.68 / 1.04 / 3.57 / 1.20 / 3.80 / 1.26
Table-GLM-time3: GLM test with post-hoc Tukey test for cessation processes of change for time 3 data
Processes of change / F-value / η2 / Tukey patternExperiential processes of change
Consciousness raising / F(4,)=13.65** / .062 / PC < C = P = A = M
Dramatic relief / F(4,)=22.08** / .097 / PC < C = P = A = M
Environmental reevaluation / F(4, 1155)=26.39** / .113 / PC < C = P = A < M
Social liberation / F(4, 1155)=26.33** / .113 / PC < C = P = A = M
Self-reevaluation / F(2, 2283)=22.90** / .100 / PC < C = P = A = M
Behavioral processes of change
Helping relationships / F(4, 1155)=9.451** / .044 / PC > C = P = A < M
Stimulus control / F(4, 1155)=32.14** / .135 / PC < C = P = A < M
Counter conditioning / F(4, 1155)=50.02** / .195 / PC < C = P < A = M
Reinforcement management / F(4, 1155)=54.78** / .209 / PC < C = P < A < M
Self-liberation / F(4, 1155)=59.00** / .222 / PC < C = P = A = M
** p <0.01,
< adjacent stage comparison are statistically significant
= adjacent stage comparison not statistically significant
Wilks' Lambda= 0.589 F(40,3103.616) = 11.64, p=0.000
Fig-smk-3: experiential processes of change utilization across stage of change time3
Fig-smk-3: Behavioral processes of change utilization across stage of change time3
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