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J Nurs Meas. 2015;23(2):326-35. doi: 10.1891/1061-3749.23.2.326.

Reliability and Validity of a Shortened Version of an Instrument for Diabetes Self-Care Agency.

Author information

1
Division of Health Science, Osaka University Graduate School of Medicine, Japan.

Abstract

PURPOSE:

The purpose of this study was to develop a shortened version of the Instrument of Diabetes Self-Care Agency (IDSCA).

METHODS:

In the development of the shortened version of IDSCA, intraclass correlation coefficient 2 (ICC2) analysis was done to determine items to be deleted. However, the 7 subscales were retained. The shortened IDSCA was evaluated for internal consistency, reproducibility, concurrent validity, criterion-related validity, and goodness of fit.

RESULTS:

The shortened IDSCA included 35 items addressing 7 subscales. High ICC2 (.804) and a high Cronbach's alpha (.89) indicate internal consistency and reproducibility. A high correlation (.62) between the shortened version of the IDSCA and the Self-Care Agency Questionnaire indicated concurrent validity.

CONCLUSION:

The shortened IDSCA provides a reliable and valid measure of self-care agency of individuals with diabetes.

PMID:
26284844
DOI:
10.1891/1061-3749.23.2.326
[Indexed for MEDLINE]

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