Table 4

Generalised estimating equation (GEE) model for both intention-to-treat and per-protocol analyses.

Mean difference in prevalence (%)OR*95% CIP values
All problems
 Intention-to-treat7.80.590.40 to 0.860.008
 Per-protocol9.60.530.36 to 0.780.001
Substantial problems
 Intention-to-treat†2.30.820.51 to 1.330.42
 Per-protocol‡3.40.700.40 to 1.230.22
  • *All analyses performed using intervention group as reference value.

  • †Age, years as senior, height and weight were included as covariates in the GEE model.

  • ‡Height was included as a covariate in the GEE model.