Table 1 Baseline individual variables at enrolment of periodontal patients
Variable | Intervention (n = 59) | Control (n = 57) | Comparison of I and C groups |
|---|---|---|---|
Demographics | Â | Â | Â |
Mean (SD) Age (years) | 39.9 (8.0) | 43.5 (8.0) | 95% CI (C-I) = (0.6, 6.5) |
Gender (female) | 45/59 (76%) | 37/57 (65%) | χ2 = 1.805 df = 1 p = 0.179 |
Deprivation Category (5–7 i.e. more deprived) | 28/59 (47%) | 29/57 (51%) | χ2 = 0.136 df = 1 p = 0.713 |
Nicotine Dependence and Exposure | Â | Â | Â |
Median (IQ) number of cigarettes/day | 20 (15–40) | 20 (15–25) | 95% CI (C-I) = (-1,5) |
Mean (SD) number of years smoked | 22.5 (7.9) | 25.2 (8.2) | 95% CI (C-I) = (-0.3, 5.6) |
Mean (SD) pack years | 21.5 (12.5) | 24.8 (12.1) | 95% CI (C-I) =(-1.3, 8.0) |
Median (IQ) Heaviness of Smoking Index (HSI) | 3.0 (3.0–4.0) | 4.0 (3.0–4.0) | 95% CI (C-I) = (0.0, 1.0) |
Median (IQ) Fagerstrom Test for Nicotine Dependence (FTND) | 5.0 (3–6) | 5.0 (3–7) | 95% CI (C-I) = (0.0, 1.0) |
Exposure to smoke at home | 32/59 (56%) | 27/57 (52%) | χ2 = 1.061 df = 2 p = 0.628 |
Intention to quit | Â | Â | Â |
Motivation to quit/'Stage of Change' | Â | Â | Â |
   • Precontemplator | 6/59 (10%) | 9/57 (16%) | χ2 = 1.076 df = 2 p = 0.584 |
   • Contemplator | 26/59 (44%) | 26/57 (46%) |  |
   • Preparation | 27/59 (46%) | 22/57 (38%) |  |
Biochemical Measures | Â | Â | Â |
Mean (SD) cotinine level (ng/ml) | 231.9 (95.0) | 243.3 (104.3) | 95% CI (C-I) = (-25.3, 48.2) |
Mean (SD) CO level (ppm) | 22.0 (8.8) | 20.8 (9.1) | 95% CI (C-I) = (-2.2, 4.5) |