Measuring patient perceptions about osteoporosis pharmacotherapy

Area of Science:

• Gerontology
• Pharmacology
• Health Psychology

Background:

• Poor adherence to osteoporosis pharmacotherapy is a significant clinical issue.
• Patient perceptions of treatment benefits and barriers influence adherence.
• Understanding these perceptions is crucial for improving treatment outcomes.

Purpose of the Study:

• To psychometrically evaluate a new scale designed to measure patient perceptions of osteoporosis pharmacotherapy.
• To assess patient perceptions regarding the benefits of and barriers to osteoporosis treatment.

Main Methods:

• A 13-item scale was developed and administered via telephone interview to 871 women aged 65-90.
• Psychometric evaluation included item analysis, factor analysis, and reliability testing (Cronbach's alpha).
• Construct validity was assessed by comparing scores between women with and without a diagnosis or treatment.

Main Results:

• Six items were omitted due to redundancy, poor correlation, or factorial complexity, leaving seven items.
• Two distinct unidimensional domains emerged: a 5-item scale for perceived benefits and two items for perceived barriers.
• The 5-item benefits scale demonstrated good internal consistency (Cronbach's alpha = 0.88) and construct validity.

Conclusions:

• The 5-item scale is a potentially useful tool for assessing perceptions of osteoporosis pharmacotherapy benefits.
• Additional research is required to develop robust scales for measuring perceived barriers to osteoporosis pharmacotherapy.