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Table 3 Marginal effects on likelihood of attending Health Check from single-level and multi-level logistic regression

From: Randomised controlled trial comparing uptake of NHS Health Check in response to standard letters, risk-personalised letters and telephone invitations

Predictor variables Marginal effects
Single-level Multi-level
Invitation method (ref. standard letter)
 Telephone .162*** .180***
(.0190) (.0374)
 Personalised letter .0118 .0400**
(.0173) (.0182)
Age (years) .00660*** .00611***
(.00144) (.00151)
Gender .0434*** .0443***
(male = 0, female = 1) (.0157) (.0164)
Deprivation quintile .0441*** .0202**
(1 = most to 5 = least deprived) (.00633) (.00843)
Area morphology (urban = 0, rural = 1) −.0149 −.0357*
(.0184) (.0195)
CVD risk (% 10-year score) −.00854*** −.00738***
(.00270) (.00270)
Practice size 7.30e-06*** 3.17e-06
(2.69e-06) (1.38e-05)
Health Checks outside working −.0375** −.0828
hours (no = 0, yes = 1) (.0148) (.0786)
Telephone invitations outside working −.108*** −.0685
hours (no = 0, yes = 1) (.0194) (.0973)
  1. Standard errors in parentheses
  2. *** p < .01, ** p < .05, * p < .1