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Logistica and linearb regression to predict reasons for not using smoking cessation aids from demographic, smoking behaviour, motivational, and health-related variables |
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| Prediction variables |
Scale "Social and environmental barriers" OR (CI 95%) |
Scale "SCA unnecessary" β-weight |
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|
|
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| univariate |
multivariable |
univariate |
multivariable |
|
| demographic variables |
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| gender |
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| malec |
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| female |
.559 (.371–.843) |
.620 (.376–1.020) |
-.019 |
-d |
| age |
1.004 (.989–1.019) |
- |
-.065 |
- |
| educational level |
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| < 10 yearsc |
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| = 10 years |
.382 (.219–.668) |
.500 (.267–.936) |
-.013 |
|
| > 10 years |
.220 (.111–.434) |
.297 (.139–.632) |
-.012 |
- |
| marital status |
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| married/living with a partnerc |
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| not married/not living with a partner |
.783 (.486–1.262) |
- |
-.019 |
- |
| smoking behaviour variables |
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| cigarettes per day |
1.048 (1.015–1.082) |
1.015 (.969–1.063) |
.071 |
- |
| FTND-Scoree |
1.274 (1.098–1.477) |
1.206 (.992–1.466) |
.041 |
- |
| age at onset |
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| < 16 yearsc |
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| 16–18 years |
1.219 (.758–1.959) |
.012 |
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| > 18 years |
1.091 (.613–1.942) |
- |
-.070 |
- |
| quit attempts within the last 12 months |
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| 0c |
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| 1 |
1.379 (.780–2.438) |
.011 |
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| 2–5 |
1.528 (.852–2.742) |
.057 |
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| >5 |
1.051 (.389–2.839) |
- |
.016 |
- |
| smoking intensity |
1.012 (1.003–1.021) |
1.001 (.990–1.013) |
.076 |
- |
| motivational variables |
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| intention to quit within the next six months |
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| noc |
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| yes |
1.583 (1.013–2.473) |
2.008 (1.207–3.338) |
.121** |
.113** |
| pros of non-smoking |
1.148 (.957–1.376) |
- |
.078 |
- |
| self-efficacy |
.885 (.696–1.125) |
- |
.063 |
- |
| health-related variables |
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| mental health |
.927 (.684–1.257) |
- |
-.083* |
-.073 |
| general health |
.989 (.976–1.001) |
- |
.022 |
- |
|
All analyses were adjusted for study membership (population-based vs. general practice patient sample) as well as study group membership (intervention vs. control condition). a Scale „Social and environmental barriers", due to substantial non-normality the scale was dichotomised using 0 = no agreement, 1 = at least minimal agreement b Scale "SCA unnecessary" c Reference category d Not sufficient for multivariable analysis e Because cigarettes per day were used as separate predictor, the FTND score was computed without cigarettes per day to avoid multi-collinearity * p < .05; ** p < .01 | ||||
Gross et al. BMC Public Health 2008 8:129 doi:10.1186/1471-2458-8-129 |
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