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Abstract
A meta-analysis of the literature of controlled studies of educational and psychooocial
interventions in the treatment of diabetes mellitus yielded 93 studies of 7451 patients
testing the effects of eight intervention types: (1) didactic education, (2) enhanced
education, (3) diet instruction, (4) exercise instruction, (5) self-monitoring instruction,
(6) social learning/behavior modification, (7) counseling, and (8) relaxation training.
An overall mean effect size (ES) of +0.51 ± 0.11 was found indicating moderate but
significant (P < 0.05) improvements for all intervention subjects. Physical outcome and knowledge
gain were most affected, followed by psychological status and compliance. Diet instruction
and social learning interventions showed the strongest (ES = +0.68 ± 0.58 and ES =
+0.57 ±0.42, respectively) and relaxation training the weakest (ES = +0.30 ± 0.74)
effects. Associations between study and sample characteristics and mean ES values
were explored with type of setting and methodological weaknesses such as single group
design and non-random assignment achieving statistical significance. Neither intervention
type, number of visits, sex, age, nor type of diabetes were significantly correlated
with mean ES values. Implications of these findings for clinical treatment and future
research are discussed.
Keywords
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Article info
Publication history
Accepted:
March 21,
1988
Footnotes
☆This research was supported by a grant from the New York State Health Research Council (Contract No. C001885).
Identification
Copyright
© 1988 Published by Elsevier Inc.