VALIDATION-STUDY OF THE S-IQCODE - SPANISH VERSION OF THE INFORMANT QUESTIONNAIRE ON CONGENITIVE DECLINE IN THE ELDERLY

Although in the last decade the screening test of dementia have improved, is still being of interest the study of simple methods with a most sensitivity and specificity in the detection of the cognitive decline. Jorm et al have used recently a questionaire (IQCODE) by which a subject's relative in forms of the decline suffered by this in his cognitive capacity. In this work is showed a spanish adaptation of this test, the spanish-IQCODE, analysing it's usefulness for the detection of mild dementia. The S-IQCODE shows a diagnostic validity (sensitivity of 86%, specificity of 92%, positive predictive value of 54% and negative predictive value of 98%)greater than Mini-Mental State Examination (MMSE); it also shows a correlation with the diagnostic of dementia greater (r=0.70 vs r=-0.37); and, different from MMSE, it doesn't show significative correlations with the age, the schooling and the premorbid intelligence. The results in this study show the S-IQCODE as a good test for the detection of the mild dementia, of greater diagnostic power than the MMSE and less contaminated than this by strange variables to the cognitive decline.