Confirmatory factor analysis of the Appraisal of Self-Care Agency Scale - Revised.
Thaís Santos Guerra Stacciarini, Ana Emilia Pace
PMID 28146182WHAT IT FOUND
The Appraisal of Self-Care Agency Scale works for Brazilian patients with diabetes, but one of its three subscales is unreliable.
Use the total score to assess self-care, but do not trust the 'Developing power' subscale to guide specific interventions.
Key findings
01The scale's total structure showed acceptable fit and reliability for two of its three factors, but the 'Developing power for self-care' factor had poor internal consistency.
02Confirmatory analysis supported the three-factor model overall, though the fit was not as strong as the original English version.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The sample was limited to adults with type 2 diabetes taking insulin in one region of Brazil, so results may not apply to other groups. The 'Developing power' subscale was psychometrically weak, limiting the utility of that specific dimension. The study did not compare the scale's performance against a gold-standard clinical assessment of self-care.
Declared interests
The study was approved by the Institutional Review Board. Authorization to adapt the scale was provided by the original author. No specific funding sources or conflicts of interest were declared in the text.
The easy way to misread this
Do not assume the subscale scores are equally reliable. The 'Developing power for self-care' subscale failed to demonstrate internal consistency in this study, so a low score on that specific subscale should not be used to diagnose a deficit in that area.