Drummond, C & Ghodse, H (1999) Use of investigations inthe diagnosis and management of alcohol use disorders. APT,5, 366375. The second paragraph, first column, p. 368should read: "The specificity of a test is the extent to whichit only identifies true negatives and minimisesfalse positives. In the same hypothetical screeningstudy, a test that has a specificity of 90% will correctly classify90% of true negatives as not misusing alcohol."The authors apologise for any confusion that may have arisen.