Adherence to pulmonary rehabilitation during a 12-month period 89 association time and adherence depended on adherence scores in the different patients. The results are shown as beta’s (b) with their standard error (SE) and 95% confidence intervals (CI). The sample size used in this study was determined by the main study for which it collected the data (see chapter 6). Therefore, with regard to the present analyses a post hoc power analysis was protocoled, using G*Power 3.1 [23]. The null hypothesis was that there was no difference between the means at all four measurements. Post hoc power was calculated in G*Power with an ANOVA repeated measures within factors analysis, with a medium effect size (f = 0.25), a = 0.05, and a total sample size of n = 196. Results Participants Patients from 53 different physiotherapy practices participated in the study. Out of 199 patients who gave informed consent, data from 196 patients were analyzed [15]. The percentage of missing values across the 17 variables varied between 0% and 8% from baseline to 12 months. In total 196-180 out of 196 patients had a complete data set. There was no association between participants with missing data and the pattern of baseline characteristics. Reasons for missing data were leaving the study; three patients died, three patients stopped physiotherapy because they were diagnosed with cancer or other medical reason, and six patients stopped physiotherapy for an unknown reason. Table 1 summarizes the demographic and disease characteristics of the patients.
RkJQdWJsaXNoZXIy MjY0ODMw