Influence of Data Collection Mode on Self-Report Validity of Asthma Therapy Adherence
Influence of Data Collection Mode on Self-Report Validity of Asthma Therapy Adherence
This study will examine how the assessment mode influences the validity of self-reported
 adherence to asthma therapy. Self-reported adherence to asthma therapy data will be collected
 using one of three randomized assessment modes (interview, computer, or telephone).
BACKGROUND:

 Self-reports are a primary source of behavioral data. Studies have highlighted the variable
 validity and reliability of self-report measures of health behaviors such as adherence to
 therapy. Research on self-reports of sensitive information, such as sexual behavior and drug
 use, suggests that the mode of data collection may enhance validity of self-reports. However,
 no studies have determined how the mode of data collection influences self-reports when an
 objective measure of the behavior is available.

 DESIGN NARRATIVE:

 The primary aim of this study is to examine the influence of the mode of data collection on
 the validity of self-reports of inhaled anti-inflammatory medication adherence.

 The key secondary outcomes of the study will attempt to answer the following questions: 1)
 does the assessment mode influence self-reports of commonly used asthma outcome measures of
 disease-related symptoms, self-management behaviors, and quality of life?; 2) does the
 relationship between the assessment mode, the validity of self-reports of adherence, and
 other measures (i.e., asthma symptoms, self-management behaviors, and quality of life) change
 over time?; and 3) does the assessment mode interact with baseline personality
 characteristics and mood to influence the validity of self-reports of adherence and other
 outcome measures (i.e., asthma symptoms, self-management behaviors, and quality of life)?
Inclusion Criteria:

 -  Diagnosis of asthma

 -  Under a provider's care for asthma

 -  Prescribed daily inhaled corticosteroids (by metered dose inhaler [MDI]) at least 2
 times a day

 -  Speaks English

 -  Otherwise in good general health

 Exclusion Criteria:

 N/A