Validation of a Cystic Fibrosis Medication Knowledge Questionnaire

Low adherence to cystic fibrosis (CF) treatment is associated with poor health outcomes, while knowledge of the disease and medication regimen can positively influence adherence. This study’s purpose was to develop and validate a questionnaire to help determine CF medication knowledge of pediatric patients and caregivers. Our questionnaire had 37 items: 22 selected-response and 15 open-response questions. We used validation processes from the Standards for Educational and Psychological Testing. CF experts analyzed validity evidence based on content. Then, the questionnaire was field tested with 17 pediatric patients and 18 caregivers. The correlation between age and medication knowledge was medium (r = .33), but was not significant (P = .189). Cronbach’s α for the overall test was .84. Participants thought the questionnaire was important and suitable, with a few minor suggestions to improve wording. Strong validity evidence indicates the questionnaire could be used to assess medication knowledge and allow more personalized education to improve adherence.

Development, validation, and implementation of a questionnaire assessing disease knowledge and understanding in adult cystic fibrosis patients

BACKGROUND

The number of adults living with cystic fibrosis (CF) is increasing, necessitating an assessment of knowledge in this growing population.

METHODS

A questionnaire assessing CF knowledge was completed by 100 CF patients (median age: 26.0 years, range 17-49 years; median FEV₁: 57.0% predicted, range 20-127% predicted). Level of knowledge was correlated with clinical and sociodemographic characteristics.

RESULTS

Questionnaire validation showed acceptable internal consistency (α=0.75) and test-retest reliability (0.94). Patients had fair overall understanding of CF (mean=72.4%, SD=13.1), with greater knowledge of lung and gastrointestinal topics (mean=81.6%, SD=11.6) than reproduction and genetics topics (mean=57.9%, SD=24.1). Females and those with post-secondary education scored significantly higher (p<0.05).

CONCLUSIONS

This study validated a questionnaire that can be utilized to assess CF knowledge. Although CF patients understand most aspects of their disease, knowledge deficits are common - particularly regarding genetics and reproduction - and should be considered when developing CF education programs.

Knowledge, interests and educational needs of adults diagnosed with Cystic Fibrosis after age 18

BACKGROUND

Little is known about the knowledge, interests, or educational needs of those diagnosed with cystic fibrosis (CF) as adults or the extent to which they find available information helpful. The purpose of this inquiry was to address these gaps.

METHODS

A mailed survey, completed by an international sample (N=130) recruited through internet sites and CF Centers, collected quantitative and qualitative data to address five research questions. A response rate of 74.3% was achieved.

RESULTS

Most participants (67.4%) said they knew little or nothing about CF at diagnosis. Of the 71.5% who indicated they received patient education, 26.9% felt they were given 'too little'. At diagnosis, most wanted disease-related information about CF. Over time they expressed interest in topics related to quality-of-life, such as CF research efforts, alternative medicine and employment issues. Three-fourths (75.4%) were active information seekers, but 60.2% were less than satisfied with what they found. Qualitative responses indicated participants did not 'see themselves' in available materials, which many described as 'depressing'.

CONCLUSIONS

Medical caregivers must be aware of and respond to the unique educational interests and needs of their adult-diagnosed patients. Additional research is recommended to better understand how patient education benefits these adults.