Characteristics of the participants at baseline, according to randomised assignment group
| Control | Intervention | |
| (N=285) | (N=286) | |
| Sociodemographic | ||
| Age (years) | 50.2±7.9 | 49.5±7.7 |
| Sex (male) | 136 (47.7) | 126 (44.1) |
| Civil status | ||
| Married | 204 (72.1) | 198 (69.5) |
| Widowed | 7 (2.5) | 11 (3.9) |
| Single | 32 (11.3) | 31 (10.9) |
| Divorced | 40 (14.1) | 45 (15.8) |
| Children (yes) | 236 (83.4) | 243 (85.3) |
| No of children | 1.80±1.16 | 1.77±1.12 |
| Education level | ||
| No studies | 7 (2.5) | 7 (2.5) |
| Incomplete primary school | 34 (12.0) | 38 (13.4) |
| Complete primary school | 135 (47.7) | 145 (51.1) |
| Secondary school | 68 (24.0) | 67 (23.6) |
| Middle grade university | 25 (8.8) | 15 (5.3) |
| Superior grade university | 13 (4.6) | 12 (4.2) |
| Employment status | ||
| Currently working | 183 (64.7) | 184 (64.6) |
| Unemployed | 41 (14.5) | 41 (14.4) |
| Disability | 9 (3.2) | 8 (2.8) |
| Retires | 27 (9.5) | 23 (8.1) |
| Housework | 21 (7.4) | 27 (9.5) |
| Students, other possibilities | 2 (0.7) | 2 (0.7) |
| Comorbidity | ||
| Hypertension | 51 (17.9) | 67 (23.4) |
| Dyslipidaemia | 62 (21.8) | 63 (22.0) |
| Diabetes mellitus | 23 (8.1) | 18 (6.2) |
| Cardiovascular disease | 3 (1.1) | 3 (1.0) |
| Urinary system pathology | 2 (0.7) | 3 (1.0) |
| Neuropsychiatry pathology | 24 (8.4) | 14 (4.9) |
| Musculoskeletal pathology | 15 (5.3) | 20 (7.0) |
| Digestive system alterations | 20 (7.0) | 13 (4.5) |
| Other endocrinopathies | 14 (4.9) | 15 (5.2) |
| Other pathologies not included | 9 (3.2) | 9 (3.1) |
| Clinical evaluation | ||
| Height (cm) | 164.4±9.1 | 163.8±9.4 |
| Weight (Kg) | 72.4±13.5 | 73.1±16.1 |
| BMI (Kg/m2) | 26.7±4.2 | 27.1±4.8 |
| Anthropometric categorisation | ||
| Underweight | 4 (1.4) | 4 (1.4) |
| Normal weight | 99 (35.2) | 92 (32.7) |
| Overweight grade I | 60 (21.4) | 57 (20.,3) |
| Overweight grade II | 64 (22.8) | 58 (20.6) |
| Obesity grade I | 40 (14.2) | 56 (19.9) |
| Obesity grade II | 12 (4.3) | 8 (2.8) |
| Morbid obesity | 2 (0.7) | 6 (2.1) |
| Systolic blood pressure (mm Hg) | 124.4±15.7 | 123.5±15.3 |
| Diastolic blood pressure (mm Hg) | 77.0±10.6 | 75.8±10.3 |
| Oxygen saturation (%) | 97.7±1.4 | 97.7±1.4 |
| Peak-flow (L/min) | 429.3±119.7 | 418.9±123.3 |
| Health habits | ||
| Regular physical activity | 108 (38.3) | 118 (41.4) |
| Physical activity (hours/week) | 2.2±4.0 | 2.7±5.3 |
| Alcohol intake (SD/week) | 7.5±13.7 | 6.5±12.8 |
| Alcohol intake categorisation | ||
| Non-drinker | 141 (49.6) | 129 (45.6) |
| Low-risk drinker | 117 (41.2) | 130 (45.9) |
| High-risk drinker* | 26 (9.2) | 24 (8.5) |
| Smoking habit | ||
| Start age (years) | 17.9±5.3 | 18.0±6.1 |
| Daily consumption (cigarettes/day) | 18.2±10.0 | 18.3±10.4 |
| Cumulative consumption (pack-year)† | 29.6±18.7 | 28.8±18.7 |
| Expired-CO value (ppm) | 16.2±11.1 | 17.4±11.1 |
| FTND score | 3.9±2.5 | 3.9±2.5 |
| Nicotine dependence level‡ | ||
| Low | 117 (41.6) | 130 (45.6) |
| Middle | 143 (50.9) | 128 (44.9) |
| High | 21 (7.5) | 27 (9.5) |
| RTS score | 5.6±2.7 | 5.9±2.6 |
| Motivation to quit smoking § | ||
| Low | 57 (20.3) | 53 (18.6) |
| Middle | 117 (41.6) | 109 (38.2) |
| High | 107 (38.1) | 123 (43.2) |
| Prochaska-DiClemente stage¶ | ||
| Precontemplation | 97 (34.6) | 88 (30.9) |
| Contemplation | 150 (53.6) | 158 (55.4) |
| Preparation | 26 (9.3) | 31 (10.9) |
| Action | 7 (2.5) | 8 (2.8) |
| Previous quit attempts | 2.72±4.1 | 2.72±3.5 |
Data are presented as number of patients (%) or mean±SD according to the type of variable.
*Considering risk, a consumption ≥28 SD/week for men and ≥17 SD/week for women.
†Value obtained by multiplying the daily average of cigarettes smoked by the number of years of habit and dividing by 20.
‡Considering low dependence, a score of 0–3, middle of 4–7 and high of 8–10.
§Considering low motivation, a score of 0–3, middle of 4–6 and high of 7–10.
¶According to the definition of the Prochaska and DiClemente model.
BMI, body mass index; FTND, Fagerström Test for Nicotine Dependence; ppm, particles per million; RTS, Richmond Test Scores; SD, standard drink.