The proportion of deaths due to overdose in relation to all causes of death in HIV infected persons is defined as the overdose mortality rate. For each study the OMR was derived by the Number (N) Overdose Deaths divided by Number (N) Total Deaths. The studies were categorized into the following regions: Asia, Canada, Europe, Puerto Rico, and USA.

Table 1: Overdose Mortality Rate (OMR) Derived from Individual Cohort Studies.