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Table 3 Summary of multi-level model fit to log transformed CVD risk data

From: NHS health checks through general practice: randomised trial of population cardiovascular risk reduction

  Factor Coefficient Standard error T-ratio df p-value
  Intercept 2.512 0.154 16.322 34 <0.001
Practice factors IMDG −0.079 0.039 −2.021 34 0.051
  SRG 0.000 0.009 0.028 34 0.978
  PRACSIZE −0.026 0.017 −1.546 34 0.131
Individual factors AGE 0.017 0.002 9.091 598 <0.001
  SEX −0.256 0.033 −7.658 598 <0.001
Grouping factors GROUP −0.007 0.023 −0.287 1194 0.774
  TIME −0.111 0.015 −7.501 1194 <0.001
  Variance components Standard deviation df p-value
r0 0.055   0.235   561 <0.001
e 0.036   0.189    
u00 0.002   0.042   34 0.027
  1. CVD-cardiovascular disease; df-degrees of freedom.
  2. Grouping variables: IMDG-socio-economic status; SRG-staggered recruitment group; PRACSIZE-practice size; AGE-age group; SEX-gender; GROUP-treatment; TIME-baseline or follow-up.
  3. Variance components: r0-between individuals; u00-between practices; e-random error.