Diabetes Care, Vol 18, Issue 2 206-209, Copyright © 1995 by American Diabetes Association
Effects of personality on metabolic control in IDDM patients
A Orlandini, MR Pastore, A Fossati, S Clerici, A Sergi, A Balini, MA Parlangeli, C Maffei, A Secchi and G Pozza
Neuropsychic Sciences Department, H. San Raffaele Scientific Institute, Milan, Italy.
OBJECTIVE--The aim of this study was to evaluate the relationship between
poor metabolic control and maladaptive personality traits (according to the
Diagnostic and Statistical Manual of Mental Disorders, Third
Edition-Revised) in an adult-onset insulin-dependent diabetes mellitus
sample group (n = 77). RESEARCH DESIGN AND METHODS--Metabolic control was
evaluated through glycosylated hemoglobin (HbA1c). Personality traits were
assessed with the Personality Diagnostic Questionnaire-Revised, a
self-administered questionnaire. Residual pancreatic secretion (fasting
serum C-peptide) was also evaluated. RESULTS--Principal components analysis
revealed three personality profiles: "withdrawn-suspicious" (P1),
"dramatic-dependent" (P2), and "aggressive-irresponsible" (P3). Multiple
linear regression analysis showed that C-peptide levels and P2 personality
profiles were significant and independent predictors of HbA1c plasma
levels: P2 predicted high HbA1c values and C-peptide predicted low HbA1c
levels. CONCLUSIONS--These data suggest that a P2 personality profile is a
significant predictor of poor metabolic control.