LOCUS OF CONTROL AND METABOLIC CONTROL

Previous studies designed to establish in diabetic patients the relati onship between metabolic control and locus of control are controversia l. The aim of the present study was to find answers to the following q uestions: is there a link between an internal locus of control and imp roved metabolic control ? Is this true for type I and type II diabetic subjects ? Is this improved metabolic control linked directly, or eve n indirectly, with the locus of control by types of behaviour, such as for example a greater desire for information concerning the disease ( knowledge) and closer adherence to doctors' recommendations (complianc e) ? Sixty-one patients (36 type I and 25 type II) on insulin therapy were compared according to the type of their locus of control using tw o different questionnaires (Rotter and Wallston). The extent of their knowledge about diabetes was also assessed; self-monitoring of blood g lucose (SMBG) was considered to be a measure of compliance; while the HbA(1) level was considered to be an indicator of metabolic control. T he study compared the influence of the type of locus of control on the various parameters. The results indicate that, irrespective of the qu estionnaire, type I ''internals'' exhibited better metabolic control ( p < 0.05) than type I ''externals'', even with a lower level of knowle dge of diabetes (p < 0.01) and less frequent SMBG (p < 0.05). However, the benefits of internality as regards metabolic control were not as great when this internality was extreme. In conclusion, the data showe d different patterns of interactions between locus of control and meta bolic control in type I and type II patients, suggesting that internal type I subjects, apart from the extreme cases, could have a kind of ' 'internal clock'', that is, a better awareness, understanding and meta bolic control of their illness despite a lower knowledge.