Addiction & Mood Screening
Every addiction & mood screening calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
7 calculators in this section
- Alcohol Units and Weekly Intake CalculatorConvert a drink's volume and strength into UK units, grams of ethanol, US standard drinks and Australian standard drinks at once — because a US standard drink is 1.77 UK units and the guidelines are not interconvertible.
- CAGE Alcohol Screening CalculatorScore Ewing's four CAGE questions out of 4. At the usual cut-off of two, the reviewed average sensitivity is 0.71 and specificity 0.90 — and at a prevalence of one in ten that makes most positives false.
- CIWA-Ar Alcohol Withdrawal CalculatorScore the ten CIWA-Ar items. Nine run 0 to 7 and one runs 0 to 4, so the maximum is 67 and not 70 — and the two sources read for this page band the same total differently. No dose appears anywhere here.
- GAD-2 Anxiety Screen CalculatorScore the two GAD-2 items out of 6 against the cut-off of 3. The published figures differ for generalised anxiety disorder and for any anxiety disorder, and both sets are worked through a 2 × 2 here.
- GAD-7 Anxiety Severity CalculatorScore the seven GAD-7 items out of 21 against Spitzer's published bands. At the cut-off of 10 the derivation cohort gave 89 per cent sensitivity and 82 per cent specificity — and a positive predictive value near one in five.
- PHQ-2 Depression Screen CalculatorScore the two PHQ-2 items out of 6 against the cut-off of 3. The validation gives two different sensitivity and specificity pairs for two different target conditions, and its own abstract and table disagree.
- PHQ-9 Depression Severity CalculatorScore the nine PHQ-9 items out of 27 against Kroenke's published severity bands. The ninth item asks about self-harm and is shown separately, because it is not a risk assessment and a total is not either.