RT Journal A1 Newman RG T1 INsufficient information in drug-related hospital morbidity study JF Archives of General Psychiatry JO Archives of General Psychiatry YR 2009 FD March 1 VO 66 IS 3 SP 331 OP 332 DO 10.1001/archgenpsychiatry.2008.549 UL http://dx.doi.org/10.1001/archgenpsychiatry.2008.549 AB For methadone treatment, there is reference to “statewide annual report estimates” of retention for inpatient methadone maintenance treatment (could there really be such programs in Australia?) and for outpatient services. However, based on those statewide figures, without even a time frame as to duration of retention, one cannot venture a guess as to how many of the 522 individuals starting methadone treatment and included in this analysis remained in treatment for a few days or conceivably for the entire 3½-year observation period after enrollment. In any event, the reader also has no way of ascertaining the intervals between “hospital morbidity” and the last administration of methadone; here, too, it might have been a day or more than 3 years.