Table. 4—

Predictive factors of all-cause hospitalisations during the 1st and 2nd yrs of follow-up after adjustment for the intervention

VariableAdjusted OR95% CI
6-min walk test§0.9980.997–0.999
Education levelƒ0.810.73–0.90
  • OR: odds ratio; CI: confidence interval. #: age is treated as a continuous variable (per increased year); : difference for female when compared to male; +: difference per one-point increase (reduced health status) using the St George's Respiratory Questionnaire (SGRQ); §: 6-min walk test is given per increased metre on walking distance; ƒ: education level is treated as a five-category variable (from high to low).