ABSTRACT
This study aims to systematically review the diagnostic accuracy of a digital blood pressure measurement device compared to the gold standard mercury sphygmomanometer in published studies. Searches were conducted in PubMed, Cochrane, EBSCO, EMBASE and Google Scholar host databases using the specific search strategy and filters from 1st January 2000 to 3rd April 2021. We included studies reporting data on the sensitivity or specificity of blood pressure measured by digital devices and mercury sphygmomanometer used as the reference standard. Studies conducted among children, special populations, and specific disease groups were excluded. We considered published manuscripts in the English language only. The risk of bias and applicability concerns were assessed based on the author's judgment using the QUADAS2 manual measurement evaluation tool. Based on the screening, four studies were included in the final analysis. Sensitivity, specificity, diagnostic odds ratio (DOR), and 95% confidence interval were estimated. The digital blood pressure monitoring has a moderate level of accuracy and the device can correctly distinguish hypertension with a pooled estimate sensitivity of 65.7% and specificity of 95.9%. After removing one study, which had very low sensitivity and very high specificity, the pooled sensitivity estimate was 79%, and the specificity was 91%. The meta-analysis of DOR suggests that the digital blood pressure monitor had moderate accuracy with a mercury sphygmomanometer. This will provide the clinician and patients with accurate information on blood pressure with which diagnostic and treatment decisions could be made.
Subject(s)
Blood Pressure Determination , Mercury , Blood Pressure , Child , Humans , Sensitivity and Specificity , SphygmomanometersABSTRACT
OBJECTIVE: To assess the cost-effectiveness of decentralised diagnostic programme for hepatitis B virus (HBV) implemented in Tamil Nadu, South India with specific focus on a selected key population at increased risk of HBV. METHODS: A combination of decision tree and Markov model was developed to compare cost-effectiveness of the new and standard strategy. Cost and health outcomes were calculated based on the proportion of cohort in each respective health state. Total costs, quality-adjusted life years (QALYs) and incremental cost-effectiveness ratio (ICER) of the intervention and comparator strategies were calculated. The model parameter uncertainties were evaluated by sensitivity analysis. RESULTS: Considering decentralised HBV diagnosis followed by early treatment and vaccination for negatives for a cohort of 1000 population resulted in 505 QALYs gained and incremental cost-saving of 180749 ($2620). The decentralised diagnostic strategy could avert 294 deaths, gain 293 life years and reduce out-of-pocket expenditure of 3274 ($47) per person for HBV management. CONCLUSION: Decentralised HBV diagnosis followed by early treatment and vaccination for negatives in Tamil Nadu can save lives and reduce out-of-pocket expenditures compared to standard strategy.
OBJECTIF: Evaluer le rapport coût-efficacité du programme de diagnostic décentralisé du virus de l'hépatite B (VHB) mis en Åuvre au Tamil Nadu, dans le sud de l'Inde, avec un accent particulier sur une population clé sélectionnée à risque accru du VHB. MÉTHODES: Une combinaison d'arbre de décision et de modèle de Markov a été développée pour comparer la rentabilité de la stratégie nouvelle et standard. Les coûts et les résultats pour la santé ont été calculés sur base de la proportion de la cohorte dans chaque état de santé respectif. Les coûts totaux, les années de vie corrigées de la qualité (QALY), le rapport coût-efficacité supplémentaire de l'intervention et les stratégies de comparaison ont été calculés. Les incertitudes des paramètres du modèle ont été évaluées par analyse de sensibilité. RÉSULTATS: La prise en compte d'un diagnostic décentralisé du VHB suivi d'un traitement précoce et d'une vaccination des cas négatifs pour une cohorte de 1000 habitants a permis de gagner 505 QALY et d'économiser des coûts supplémentaires de â¹180.749 (2.620 USD). La stratégie de diagnostic décentralisée pourrait éviter 294 décès, gagner 293 années de vie et réduire les dépenses personnelles de â¹3274 (47 USD) par personne pour la prise en charge du VHB. CONCLUSION: Le diagnostic décentralisé du VHB suivi d'un traitement précoce et de la vaccination des cas négatifs au Tamil Nadu peut sauver des vies et réduire les dépenses personnelles par rapport à la stratégie standard.
