Self-as-doer for diabetes: development and validation of a diabetes-specific measure of doer identification.
BACKGROUND
The purpose of this study was to develop and validate a scale to measure the level of self-care behavior "doer identity" in persons with diabetes.


METHODS
Persons with diabetes (N = 355) completed questionnaires assessing self-as-doer identity and other related constructs. Principle components and parallel analyses and tests of reliability and validity were performed.


RESULTS
A 7 factor solution explained 55.24% of the total variance on behaviors. Cronbach's alpha was .93 for the overall scale. Extracted components moderately correlated with one another and theoretically similar constructs. Self-as-doer identity significantly predicted all self-care behaviors (except for blood glucose monitoring) and glycemic control over and above related variables for persons with type 1 diabetes. Self-as-doer identity also predicted diet behaviors for persons with type 2 diabetes.


CONCLUSIONS
Evidence for a reliable and valid factor structure of the Self-as-doer-Diabetes measure was demonstrated.
Department of Psychology, Winona State University, MN 55987, USA. amanda.m.brouwer@gmail.com
Amanda M
AM
Brouwer
Katie E
KE
Mosack
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003710:Demography; D003920:Diabetes Mellitus / Q000523:psychology* / Q000628:therapy*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D025341:Principal Component Analysis; D011594:Psychometrics; D012044:Regression Analysis; D015203:Reproducibility of Results; D012648:Self Care; D020377:Self Efficacy; D011795:Surveys and Questionnaires