Influence of Data Collection Mode on Self-Report Validity of Asthma Therapy Adherence

Johns Hopkins University

Status: Completed

Conditions: Asthma; Lung Diseases

Treatments: Behavioral: Standardized Asthma Education Program

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT00233233

325

R01HL064200 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

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).

Full description

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)?

Enrollment: 139 patients

Sex: All

Ages: 19 to 95 years old

Volunteers: No Healthy Volunteers

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