• Natalie Gold, Karen Tan, Joseph Sherlock, Robin Watson, and Tim Chadborn.
• Public Health England Behavioural Insights, London, UK; visiting professor in practice, Centre for Philosophy of Natural and Social Sciences, London School of Economics and Political Science, London, UK.
• Br J Gen Pract. 2021 Sep 1; 71 (710): e693-e700.

BackgroundPublic Health England wants to increase the uptake of the NHS Health Check (NHSHC), a cardiovascular disease prevention programme. Most invitations are sent by letter, but opportunistic invitations may be issued and verbal invitations have a higher rate of uptake. Prompting staff to issue opportunistic invitations might increase uptake.AimTo assess the effect on uptake of automated prompts to clinical staff to invite patients to NHSHC, delivered via primary care computer systems.Design And SettingPseudo-randomised controlled trial of patients eligible for the NHSHC attending GP practices in Southwark, London.MethodEligible patients were allocated into one of two conditions, (a) Prompt and (b) No Prompt, to clinical staff. The primary outcome was attendance at an NHSHC.ResultsFifteen of 43 (34.88%) practices in Southwark were recruited; 7564 patients were eligible for an NHSHC, 3778 (49.95%) in the control and 3786 (50.05%) in the intervention. Attendance in the intervention arm was 454 (12.09%) compared with 280 (7.41%) in the control group, a total increase of 4.58% (OR = 2.28; 95% CI = 1.46 to 3.55; P<0.001). Regressions found an interaction between intervention and sex (OR = 0.65; 95% CI = 0.44 to 0.86, P = 0.004), with the intervention primarily effective on males. Comparing the probabilities of attendance for each age category across intervention and control suggests that the intervention was primarily effective for younger patients.ConclusionPrompts on computer systems in general practice were effective at improving the uptake of the NHSHC, especially for males and younger patients.© The Authors.

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