Objective: Hy-Result is the first software for self-interpretation of home blood pressure measurement results, taking into account both the recommended thresholds for normal values and patient characteristics. We compare the software-generated classification with the physician’s evaluation.
Design method: The primary assessment criterion was whether algorithm classification of the blood pressure (BP) status concurred with the physician’s advice (blinded to the software’s results) following a consultation (n=195 patients). Secondary assessment was the reliability of text messages.
Results: In the 58 untreated patients, the agreement between classification of the BP status generated by the software and the physician’s classification was 87.9%. In the 137 treated patients, the agreement was 91.9%. The κ-test applied for all the patients was 0.81 (95% confidence interval: 0.73–0.89). After correction of errors identified in the algorithm during the study, agreement increased to 95.4% [κ=0.9 (95% confidence interval: 0.84–0.97)]. For 100% of the patients with comorbidities (n=46), specific text messages were generated, indicating that a physician might recommend a target BP lower than 135/85 mmHg. Specific text messages were also generated for 100% of the patients for whom global cardiovascular risks markedly exceeded norms.
Conclusion: Classification by Hy-Result is at least as accurate as that of a specialist in current practice (http://www.hy-result.com).
aHypertension Unit, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
bINSERM UMRS1138, Centre de Recherche des Cordeliers, E22, Université Paris Descartes, Université Pierre et Marie Curie, Paris, France
cUnité de Recherche Clinique, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou.F-75015 Paris, France
dUniversité Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, F-75006 Paris, France
eThot e-santé, Paris
fCHU de Quebec – Université Laval. Hôtel-Dieu de Québec. Quebec (QC) Canada G1R 2J6
gPole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
hDivision of Cardiology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
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Correspondence to Nicolas Postel-Vinay, MD, Hypertension Unit, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France Tel: +33 1 56 09 37 71; fax: +33 1 56 09 20 40; e-mail: firstname.lastname@example.org
Received April 25, 2015
Received in revised form September 5, 2015
Accepted September 8, 2015