Table 2

Characteristics of the participants at baseline, according to randomised assignment group

ControlIntervention
(N=285)(N=286)
Sociodemographic
Age (years)50.2±7.949.5±7.7
Sex (male)136 (47.7)126 (44.1)
Civil status
 Married204 (72.1)198 (69.5)
 Widowed7 (2.5)11 (3.9)
 Single32 (11.3)31 (10.9)
 Divorced40 (14.1)45 (15.8)
Children (yes)236 (83.4)243 (85.3)
 No of children1.80±1.161.77±1.12
Education level
 No studies7 (2.5)7 (2.5)
 Incomplete primary school34 (12.0)38 (13.4)
 Complete primary school135 (47.7)145 (51.1)
 Secondary school68 (24.0)67 (23.6)
 Middle grade university25 (8.8)15 (5.3)
 Superior grade university13 (4.6)12 (4.2)
Employment status
 Currently working183 (64.7)184 (64.6)
 Unemployed41 (14.5)41 (14.4)
 Disability9 (3.2)8 (2.8)
 Retires27 (9.5)23 (8.1)
 Housework21 (7.4)27 (9.5)
 Students, other possibilities2 (0.7)2 (0.7)
Comorbidity
Hypertension51 (17.9)67 (23.4)
Dyslipidaemia62 (21.8)63 (22.0)
Diabetes mellitus23 (8.1)18 (6.2)
Cardiovascular disease3 (1.1)3 (1.0)
Urinary system pathology2 (0.7)3 (1.0)
Neuropsychiatry pathology24 (8.4)14 (4.9)
Musculoskeletal pathology15 (5.3)20 (7.0)
Digestive system alterations20 (7.0)13 (4.5)
Other endocrinopathies14 (4.9)15 (5.2)
Other pathologies not included9 (3.2)9 (3.1)
Clinical evaluation
Height (cm)164.4±9.1163.8±9.4
Weight (Kg)72.4±13.573.1±16.1
BMI (Kg/m2)26.7±4.227.1±4.8
Anthropometric categorisation
 Underweight4 (1.4)4 (1.4)
 Normal weight99 (35.2)92 (32.7)
 Overweight grade I60 (21.4)57 (20.,3)
 Overweight grade II64 (22.8)58 (20.6)
 Obesity grade I40 (14.2)56 (19.9)
 Obesity grade II12 (4.3)8 (2.8)
 Morbid obesity2 (0.7)6 (2.1)
Systolic blood pressure (mm Hg)124.4±15.7123.5±15.3
Diastolic blood pressure (mm Hg)77.0±10.675.8±10.3
Oxygen saturation (%)97.7±1.497.7±1.4
Peak-flow (L/min)429.3±119.7418.9±123.3
Health habits
Regular physical activity108 (38.3)118 (41.4)
Physical activity (hours/week)2.2±4.02.7±5.3
Alcohol intake (SD/week)7.5±13.76.5±12.8
Alcohol intake categorisation
 Non-drinker141 (49.6)129 (45.6)
 Low-risk drinker117 (41.2)130 (45.9)
 High-risk drinker*26 (9.2)24 (8.5)
Smoking habit
Start age (years)17.9±5.318.0±6.1
Daily consumption (cigarettes/day)18.2±10.018.3±10.4
Cumulative consumption (pack-year)†29.6±18.728.8±18.7
Expired-CO value (ppm)16.2±11.117.4±11.1
FTND score3.9±2.53.9±2.5
Nicotine dependence level‡
 Low117 (41.6)130 (45.6)
 Middle143 (50.9)128 (44.9)
 High21 (7.5)27 (9.5)
RTS score5.6±2.75.9±2.6
Motivation to quit smoking §
 Low57 (20.3)53 (18.6)
 Middle117 (41.6)109 (38.2)
 High107 (38.1)123 (43.2)
Prochaska-DiClemente stage¶
 Precontemplation97 (34.6)88 (30.9)
 Contemplation150 (53.6)158 (55.4)
 Preparation26 (9.3)31 (10.9)
 Action7 (2.5)8 (2.8)
Previous quit attempts2.72±4.12.72±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.