TEST-RETEST RELIABILITY OF THE COGNITIVE LIFETIME DRINKING HISTORY

A new measure of lifetime alcohol consumption, the Cognitive Lifetime Drinking History (CLDH) uses beverage-specific questions on drink size s and assesses drinking patterns to enhance recall. Two methods of est ablishing drinking intervals were examined: 1) floating-the respondent 's report of when drinking changed, and 2) fixed-defined in terms of d ecades, Test-retest reliability for lifetime ounces of alcohol consume d and times intoxicated in lifetime estimated at visits 1 week or more apart was assessed in postmyocardial infarction patients (n = 81) and controls (n = 138) who had had at least 12 drinks in a year during th eir lifetimes, No significant differences in estimates of lifetime oun ces of alcohol or times intoxicated were observed, Spearman's r ranged between 0.85 and 0.92 for the floating and fixed versions of the CLDH administered at a single visit and between 0.74 and 0.85 for the floa ting or fixed administered at both visits, Time between visits did not influence correlations. Intervals reported on the floating CLDH were comparable for postmyocardial infarction patients and controls. It too k approximately 5 minutes longer to administer the floating CLDH than the fixed CLDH, Findings support use of the CLDH for case-control stud ies and suggest that the floating and fixed versions would yield compa rable results.