Development of the Depist'HTA® score to predict a rise in blood pressure during a self-testing session: PREDIC-HTA bakery survey.

The use of an automatic blood pressure monitor with the help of a protocol given by an e-health application allows self-testing of blood pressure without the help of a health professional. Conduct a screening campaign for high blood pressure in artisanal bakeries in France and develop a score to predict the observation of an increase in blood pressure during self-testing. Cross-sectional survey conducted in mainland France in 2018 using 1000 screening kits including a tablet, Predic'HTA® application and a connected electronic blood pressure monitor (BP Track, IHealth). Available for one week in 14,000 artisanal bakeries, in turn. Used in the workplace, on a voluntary basis, by bakery employees. Completion of a health questionnaire with an estimate of excessive salt consumption. Self-screening of 3 blood pressure measurements with centralization of data on a secure database for epidemiological analysis. The average of the last 2 measurements characterizes each subject. Full use of Predic'HTA® was obtained in 62.4% of users or 7502 subjects (44% under 35 years of age, 44% 35 to 54 years of age, 12% 55 years of age and over). Antihypertensive treatment was followed by 27% of those aged 55 and over and 1% of those under 35. Among untreated subjects, the prevalence of BP>140/90 was 21.1%, increasing with age (13%, 27%, 33%) and higher among men (27.2%) than among women (15.4%). With the parameters age, sex, weight, IMC, family history of high blood pressure, excessive salt consumption, previous intake of an antihypertensive drug, a score is calculated to associate a probability of having an BP >120/80 with self-screening. The ROC curve shows an AUC at 0.723 with a PPV at 91% and a NPV at 41%. The depist'HTA® score is available at www.depisthta.net CONCLUSION: Self-testing of blood pressure is possible with an electronic blood pressure monitor if a dedicated appliance is used at the same time. The development of the prediction score depist'HTA® for a blood pressure level>120/80 would be useful to target subjects who need to self-test their blood pressure in the short term.

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