The Drug Free Australia 2010 analysis of the Sydney MSIC evaluations found overdose levels in the MSIC 32 times higher than clients’ own recorded histories of overdose prior to registering to use the facility. The Drug Free Australia calculations compared the registration data for overdose histories published in the MSIC’s 2003 evaluation document, which allowed comparison rates of overdose from a period before a heroin drought reduced overdoses Australia-wide, with rates of overdose drawn from data in the 2010 evaluation. Drug Free Australia has expressed concern that the evaluators, in using injecting room overdose data to calculate quite incorrect 'lives saved' estimates, failed to examine the extent to which overdoses were over-represented in the injecting room against data they had available to them on clients’ prior histories of overdose.