Which outcome measures should you actually use in private practice?

For most UK private practitioners, the PHQ-9 and GAD-7 are the sensible starting point: they're free, widely validated, understood by GPs and insurers, and take clients under three minutes to complete. If your caseload is broader than depression and anxiety, CORE-10 covers general psychological distress across presentations. The right choice depends on your client group, your modality, and what you plan to do with the data.

Why bother with outcome measures at all?

They serve two distinct purposes, and it's worth being clear which matters to you.

The first is clinical: a scored measure gives you and your client something concrete to look at together. A PHQ-9 that drops from 18 to 7 over eight sessions is a visible marker of change that can strengthen the therapeutic alliance and inform decisions about pacing or ending. A score that isn't moving — or that creeps up — is a prompt to review formulation at session twelve rather than session twenty.

The second is administrative: insurers (Bupa, AXA Health, Aviva and others) increasingly ask for outcome data at assessment and discharge, and some specify particular measures. If you work with GP referrals or IAPT step-down clients, familiarity with PHQ-9 and GAD-7 is practically essential, as those are the measures the referring system already uses.

Neither purpose replaces clinical judgement. A score is one data point, not a verdict.

The main options and what they're suited to

PHQ-9 — nine items, depression-specific, free to use. Scores range from 0–27 with published severity bands. Widely accepted by UK insurers and GPs. Limitation: depression-only, so it misses anxiety symptoms unless paired with the GAD-7.

GAD-7 — seven items, generalised anxiety. Same scoring logic as the PHQ-9 and the same insurer familiarity. Often administered alongside the PHQ-9, adding only a minute or two.

CORE-10 — ten items covering wellbeing, problems, functioning, and risk. Transdiagnostic, so useful when clients don't fit neatly into a single diagnostic category. Free for individual practitioners via the CORE System Trust. Slightly less familiar to insurers than PHQ-9/GAD-7 but increasingly accepted.

CORE-OM (34 items) — the longer version. More sensitive to change and better suited to research or service evaluation, but the length puts some clients off. More common in NHS and EAP settings than in solo private practice.

WSAS (Work and Social Adjustment Scale) — five items measuring functional impairment. Typically used alongside PHQ-9 or GAD-7 rather than instead of them. Useful when you want to track how symptoms affect daily life, not just their severity.

Modality-specific tools — for trauma, the PCL-5 (PTSD Checklist) is widely used; for OCD, the OCI-R; for eating difficulties, the EDE-Q. These are appropriate when your caseload is specialist and you need a measure sensitive to that presentation.

Practical considerations for private practice

Frequency matters as much as choice. A measure completed only at assessment and discharge tells you whether someone improved; one completed every two to four sessions tells you when, and lets you respond. Most practitioners find fortnightly or monthly collection a workable rhythm.

Administration method. Paper in the waiting room works, but it creates a transcription task. Sending a link before the session means the score arrives before the client does. Whatever method you use, apply it consistently so your data is comparable across clients.

Consent and data handling. Outcome data is health data under UK GDPR. Clients should know what you're collecting, why, how long you'll keep it, and whether it will be shared — for example, with an insurer. This belongs inside your existing privacy notice and consent process. For current ICO guidance on retention periods and lawful bases for health data, check directly with the ICO or your professional body, as the specifics can change.

Reliable Change Index (RCI). Raw score change isn't the same as clinically meaningful change. The RCI is a statistical threshold that accounts for measurement error — a PHQ-9 drop from 14 to 11 may look like progress but fall within the instrument's noise. Some insurers and supervisors ask about RCI; it's worth understanding the concept even if you don't calculate it manually. Sorca's outcomes tracking calculates RCI automatically alongside recovery status.

A suggested starting point for most solo practitioners

If you're setting up outcome measurement for the first time and your caseload is mixed:

1. Use PHQ-9 + GAD-7 as your standard pair — they cover the most common presentations, satisfy most insurer requirements, and are familiar to anyone you might correspond with.
2. Add WSAS if functional impairment is a key treatment target.
3. Switch to CORE-10 for clients whose presentation doesn't fit either measure well.
4. Add a specialist measure (PCL-5, OCI-R, etc.) only when your caseload warrants it.

Review your choice annually. If you're routinely adding a specialist measure for most clients, it may be worth making it your standard.

The honest limitation

Outcome measures are self-report tools with real psychometric limits. They capture how a client feels about a set of symptoms on the day they complete the form — not their overall wellbeing, not the quality of the therapeutic relationship, not changes that don't map onto the items. Some clients score low on a PHQ-9 while clearly struggling; others score high while reporting they feel much better than before. Use scores to inform your thinking, not to replace it. If a client finds repeated measurement distressing or performative, that's clinically relevant information worth exploring rather than overriding.

Where Sorca fits

Sorca's outcomes tracking sends PHQ-9, GAD-7, and WSAS to clients via the free companion app between sessions, calculates RCI and recovery status automatically, and produces a monthly printable report — useful for supervision, insurer correspondence, or your own review. The AI clinical scribe can reference outcome scores in session notes, and the supervision and CPD log keeps your renewal documentation in one place. Nothing enters a client record until you save it.

The free trial runs for three days and requires no card.