Chapter 7 126 status, medication adherence). If any block of variables did not contain a significant univariate predictor, that block was skipped for that particular HMRA. Finally, to determine the influence of the TPB constructs and alliance on exercise intention, exercise intention was regressed onto attitude, subjective norm, PBC, and alliance. Results Table 1 summarizes the demographic and disease characteristics of the patients. Table 2 presents the baseline TPB, psychological, and exercise/fitness variables, and exercise adherence. Table 1 Patient demographic and disease characteristics (n = 196) Demographic characteristics Male gender (%) 51.5 Median age in years (IQR) 68.1 (64.0-73.0) Resident of the Netherlands (%) 58.7 Education (%) - Low - Middle - Higher 21.4 53.1 25.5 Smoking status (%) - Never smoked - Quit smoking - Still smoking 1.5 84.7 13.8 Adherent to medication (%) 88.8 Disease characteristics GOLD classification (%) - GOLD II - GOLD III - GOLD IV 27.6 36.2 36.2 MRC-score (%) - 0 - 1 - 2 - 3 - 4 - 5 0.5 5.1 18.4 36.7 27.0 12.3 Median time in years since diagnose (IQR) 10.5 (5.0-14.0) Median depression (IQR) 6.0 (4.0-8.0) Note: IQR: Inter Quartile Range; Low = elementary education, Middle = secondary education, High = university of applied sciences or research university; GOLD: Global Initiative for Chronic Obstructive Lung Disease. The GOLD guidelines classify patients into four different categories: GOLD I (mild), GOLD II (moderate), GOLD III (severe), or GOLD IV (very severe) based on their level of airflow limitation; MRC-score: Medical Research Council
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