Key parameters (methadone substitution therapy slots and ART access by population) for strategies considered.

Description of strategies: Status quo, no methadone substitution therapy slots, 10% of eligible non-IDUs on ART, 2% of eligible IDUs on ART; low methadone substitution therapy, 3.1% of IDUs on methadone substitution therapy, ART according to status quo except 25% of eligible IDUs on methadone substitution therapy on ART; moderate methadone substitution therapy, 12.5% of IDUs on methadone substitution therapy, ART according to status quo except 25% of eligible IDUs on methadone substitution therapy on ART; high methadone substitution therapy, 25% of IDUs on methadone substitution therapy, ART according to status quo except 25% of eligible IDUs on methadone substitution therapy on ART; low mixed, 3.1% of IDUs on methadone substitution therapy, 20% of eligible non-IDUs and IDUs not on methadone substitution therapy on ART, 25% of IDUs on methadone substitution therapy on ART; moderate mixed, 3.1% of IDUs on methadone substitution therapy, 50% of all eligible patients on ART; low ART, no methadone substitution therapy slots, 20% of all eligible patients on ART; moderate ART, no methadone substitution therapy slots, 50% of all eligible patients on ART; high ART, no methadone substitution therapy slots, 80% of all eligible patients on ART; limited ART, no methadone substitution therapy slots, 80% of eligible non-IDUs on ART, 10% of eligible IDUs on ART; high methadone substitution therapy, high ART, 25% of IDUs on methadone substitution therapy, 80% of all eligible patients on ART.