OBJECTIVE - To review reliability, validity, and normative data from 7 diff
erent studies, involving a total of 1,988 people with diabetes, and provide
a revised version of the Summary of Diabetes Self-Care Activities (SDSCA)
RESEARCH DESIGN AND METHODS - The SDSCA measure is a brief self-report ques
tionnaire of diabetes self-management that includes items assessing the fol
lowing aspects of the diabetes regimen: general diet, specific diet, exerci
se, blood-glucose testing, foot care, and smoking. Normative data (means an
d SD), inter-item and test-retest reliability, correlations between the SDS
CA subscales and a range of criterion measures, and sensitivity to change s
cores are presented for the 7 different studies (5 randomized interventions
and 2 observational studies).
RESULTS - Participants were typically older patients, having type 2 diabete
s for a number of years, with a slight preponderance of women. The average
inter-item correlations within scales were high (mean = 0.47), with the exc
eption of specific diet; test-retest correlations were moderate (mean = 0.4
0). Correlations with other measures of diet and exercise generally support
ed the validity of the SDSCA subscales (mean = 0.23).
CONCLUSIONS - There are numerous benefits from standardization of measures
across studies. The SDSCA questionnaire is a brief yet reliable and valid s
elf-report measure of diabetes self-management that is useful both for rese
arch and practice. The revised version and its scoring are presented, and t
he inclusion of this measure in studies of diabetes self-management is reco
mmended when appropriate.