Table 1

Study variables

Instrument
Assessment area
Applied by
Time(s) of assessments

Sampling form
Age, sex, inclusion/exclusion criteria
Family doctor
Baseline
Sociodemographic data form
Age, sex, marital status, educational level, Socio-economic group (28), occupation
Research assistant
Baseline
MINI psychiatric interview, depression and tobacco dependence modules (27)
Psychiatric diagnosis
Research psychiatrist
Baseline
Zung Self-Rating Depression Scale (22)
Severity of depression
Research assistant
Baseline and possible relapses
State of change (23)
State of change
Research assistant
Baseline
Self-declared abstinence
Tobacco abstinence
Research assistant
Baseline and all follow-up sessions*
Minnesota tobacco abstinence symptoms (24)
Tobacco abstinence
Research assistant
Baseline and all follow-up sessions*
Expired air carbon monoxide levels (25)
Tobacco abstinence
Research assistant
Baseline and all follow-up sessions*
Cotinine levels in saliva
Tobacco abstinence
Research assistant
Baseline and all follow-up sessions*
Fagerström test for Nicotine Dependence (29)
Tobacco dependence
Research assistant
Baseline and many follow-up sessions**
State-Trait Anxiety Inventory (STAI) (30)
Anxiety
Research assistant
Baseline and many follow-up sessions**
Plutchik Impulsivity Scale (31)
Impulsivity
Research assistant
Baseline and many follow-up sessions**
Visual analog scale
Efficacy self-perception
Research assistant
Baseline and many follow-up sessions**
Medical record
Pharmacological side-effect events
Research assistant
Baseline and many follow-up sessions**

*All follow-up sessions: D (cessation day) -1, D + 1, weeks 1, 2, 3, 4, 6, 8, 10 and 13, and months 4, 5, 6, 8, 10 and 12 (16 sessions in total) **Many follow-up sessions: weeks 1, 4, 8 and months 4, 6, 8, 10, 12.

Campayo et al. BMC Family Practice 2008 9:28   doi:10.1186/1471-2296-9-28