• J Turner, E Wright, L Mendella, and N Anthonisen.
• New England Research Institute, USA.
• Chest. 1995 Aug 1; 108 (2): 394-400.

Study ObjectivePatients with moderate to severe COPD are frequently prescribed expensive and complicated therapies that require adjustments in usual activities of daily living. However, little is known about factors that are associated with adherence to such treatment. The objective of this study was to identify characteristics of patients who were adherent to long-term home nebulizer therapy.DesignPatients were stratified into two adherence groups based on average minutes of nebulizer use each day. A logistic regression model was developed to predict adherence based on baseline variables. A questionnaire was administered to patients to assess reasons for adherence to therapy.SettingFive clinical centers in the United States and Canada.ParticipantsNine hundred eighty-five patients with moderate to severe COPD enrolled in the Intermittent Positive Pressure Breathing (IPPB) Trial.InterventionsLong-term home IPPB and nebulizer therapy.Measurements And ResultsAltogether 50.6% of patients were adherent, and 49.4% were nonadherent. Among baseline variables, good adherence was predicted by white race, married status, abstinence from cigarettes and alcohol, serum theophylline level > or = 9 micrograms/mL, more severe dyspnea, and reduced FEV1 (p < 0.05). Subjects who were adherent to nebulizer therapy were older, better educated, had a stable lifestyle, were more likely to report that the therapy made them feel better, and were more likely to keep clinic appointments.ConclusionsSociodemographic, physiologic, and quality of life variables were associated with adherence to long-term nebulizer therapy.

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