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. 2016 May 1;176(5):700-2.
doi: 10.1001/jamainternmed.2016.0157.

Validation of the Instant Blood Pressure Smartphone App

Timothy B Plante  1 , Bruno Urrea  2 , Zane T MacFarlane  3 , Roger S Blumenthal  2 , Edgar R Miller 3rd  4 , Lawrence J Appel  4 , Seth S Martin  2
Affiliations

Validation of the Instant Blood Pressure Smartphone App

Timothy B Plante et al. JAMA Intern Med. .
No abstract available

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Conflict of interest statement

Conflict of Interest Disclosures: No other disclosures are reported.

Figures

Figure
Figure. Standard Blood Pressure (BP) vs Instant Blood Pressure (IBP) App Measurements
A, Scatterplot of the IBP app and standard BP measurements with line of identity in black. The gray lines represent the cutoff points for hypertension. Spearman rank-order correlation coefficient is a nonparametric test for strength of association for non–normally distributed continuous variables with ρ of −1 or +1 indicating perfect correlation and 0.4 to 0.6 representing moderate correlation. IBP measurements were not normally distributed by the Shapiro-Wilk test. B, Bland-Altman plot for IBP and the standard BP measurement. The short dashed line represents the means (SDs) of the absolute value of the difference (IBP minus standard), which were −1.2 (16.2) and 7.1 (10.8) mm Hg. The long dashed lines represent ±2 SDs for this range (32.4 and 21.6, respectively).
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