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).
|Study Design:||Allocation: Randomized|
|Official Title:||Assessment Mode and Validity of Self-Reports in Adults|
- Concordance between patient's self-reported medication adherence and electronically measured adherence [ Time Frame: Measured at Months 1 through 5 ] [ Designated as safety issue: No ]
- Impact of mode of assessment on adult self-reports of asthma symptoms, asthma management practices, and quality of life [ Time Frame: Measured at Months 1 through 5 ] [ Designated as safety issue: No ]
- Relationship between baseline measures of psychosocial variables (i.e., personality and mood) and the primary outcome [ Time Frame: Measured at Months 1 through 5 ] [ Designated as safety issue: No ]
|Study Start Date:||August 2002|
|Study Completion Date:||May 2005|
|Primary Completion Date:||May 2005 (Final data collection date for primary outcome measure)|
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.
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)?
|United States, Maryland|
|Johns Hopkins University|
|Baltimore, Maryland, United States, 21224|
|Principal Investigator:||Cynthia Rand, PhD||Johns Hopkins University|