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Table 4 Multi-level logistic regression models for high attendance at lifestyle modification program

From: Factors influencing participation in a vascular disease prevention lifestyle program among participants in a cluster randomized trial

Explanatory variables   Empty model Model 11
Participant Characteristics   OR (95% CI) OR (95% CI)
SEIFA index2 Least disadvantaged   1.00 (reference)
  Intermediate disadvantage   1.24 (0.35-4.32)
  Most disadvantaged   2.17 (0.21-22.15)
Employment status Working   1.0 (reference)
Not working3 2.39 (1.15-4.94)*
Psychological distress Low/moderate distress   1.00 (reference)
(K10 score: 16+) High distress 2.17 (1.10-4.30)*
Practice Characteristics    
Practice size Large practice (5+ GPs)   1.00 (reference)
Medium practice (3–4 GPs)   1.73 (0.60-5.05)
Small practice (1–2 GPs) 3.46 (0.79-15.03)
Practice employs or rents rooms to allied health professional No   1.00 (reference)
Yes 2.24 (0.34-14.67)
Practice has written protocol for preventative care No   1.00 (reference)
Yes 1.60 (0.33-7.83)
Between practice variance (SE3)   0.410 (0.277) 0.023 (0.132)
Intra class correlation   0.111 0.007
Explained variance 4 (%)   - 94.4%
  1. *P < 0.05.
  2. Multilevel logistic regression1 Model 1: includes all variables found to be significant in univariate analysis. 2 2006 index of relative socio-economic advantage/disadvantage, 3 Standard error, 4 Explained ‘between practice variance using the variance in the empty model as reference.