Editing PHKG Business Opportunities (section)

=== RCT Evidence — What Actually Works ===

'''Static questionnaire RCTs (1997-2024): mostly null or modest results.'''
* ESOGER trial (2024): null results on consultation length and outcomes.<ref>ESOGER trial (2024) — published in European journal, null results on pre-consultation questionnaire impact.</ref>
* VISIT trial (2022): no satisfaction effect, slight agenda-setting increase.<ref>VISIT trial (2022) — published study showing no improvement in patient satisfaction from pre-consultation questionnaires.</ref>
* These trials tested static forms filled before appointments. The evidence is clear: static questionnaires alone don't meaningfully reduce consultation time or improve outcomes.

'''LLM-augmented version: genuinely promising.'''
* PreA RCT (Nature Medicine, January 2026, n=2,069, 111 specialists): 28.7% reduction in consultation duration using LLM-based structured history-taking. However: this was specialist care, not GP. Generalisation to primary care is uncertain.<ref>PreA RCT (Jan 2026): Nature Medicine — LLM-based structured history-taking reduced specialist consultation duration by 28.7%. n=2,069 patients, 111 specialists.</ref>

'''Key insight:''' The defensible version of this opportunity is narrower than generic "pre-consultation triage": LLM-based structured history-taking integrated into the GP's existing EHR, positioned as assistant not replacement, with a measurable consultation-time outcome.