Table 3. ARCH – IDU Risk Scoring Sheet.
1 | How old are you today (years)? | If <30 years, | score 38 | ――――――――― | ||
If 30- 39 years, | score 24 | |||||
If 40-49 years, | score 7 | |||||
If ≥50 years, | score 0 | |||||
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2 | In the last 6 months, were you in a methadone maintenance program? | If yes, | score 0 | ――――――――― | ||
If no, | score 31 | |||||
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3 | In the last 6 months, how often did you inject heroin? | If 1 or more times, | Injection sub-score 1 | ――――――――― | ||
If 0 times, | Injection sub-score 0 | |||||
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In the last 6 months, how often did you inject cocaine? | If 1 or more times, | Injection sub-score 1 | ――――――――― | |||
If 0 times, | Injection sub-score 0 | |||||
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In the last 6 months, how often did you share a cooker? | If 1 or more times, | Injection sub-score 1 | ――――――――― | |||
If 0 times, | Injection sub-score 0 | |||||
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In the last 6 months, how often did you share needles? | If 1 or more times, | Injection sub-score 1 | ――――――――― | |||
If 0 times, | Injection sub-score 0 | |||||
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In the last 6 months, how often did you visit a shooting gallery? | If 1 or more times, | Injection sub-score 1 | ――――――――― | |||
If 0 times, | Injection sub-score 0 | |||||
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Composite Injection Score | Add down the 5 injection subscores above | ――――――――― | ||||
If 0, | score 0 | |||||
If 1, | score 7 | |||||
If 2, | score 21 | |||||
If 3, | score 24 | |||||
If 4, | score 24 | |||||
If 5, | score 31 | |||||
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Add down the three entries in the right column to calculate total score | ――――――――― TOTAL SCORE* |
To identify active IDU in their practice, we recommend clinicians ask all their patients a routine question: “Have you ever injected drugs that were not prescribed for you by a physician” (if yes), “When was the last time you injected any drugs?” Only complete IDU risk index if they have injected any nonprescription drug in the past 6 months.
If score is 46 or greater, evaluate for PrEP or other intensive HIV prevention services for IDU.
If score is 45 or less, provide indicated standard HIV prevention services for IDU.