Comparison of an in-pharmacy automated blood pressure kiosk to daytime ambulatory blood pressure in hypertensive subjects

J Am Soc Hypertens. 2015 Feb;9(2):123-9. doi: 10.1016/j.jash.2014.11.004. Epub 2014 Nov 20.


The objective of this study was to compare serial readings from an in-pharmacy automated blood pressure (BP) kiosk to mean daytime ambulatory BP. A total of 100 community-dwelling adults with hypertension underwent (1) three baseline automated office readings; (2) three in-pharmacy readings on each of four visits (12 total) using the PharmaSmart PS-2000 kiosk; and (3) 24-hour ambulatory BP monitoring between in-pharmacy visits two and three. Paired t-tests, Bland-Altman plots, and Pearson correlation coefficients were used for analysis. Mean BPs were 137.8 ± 13.7/81.9 ± 12.2 mm Hg for in-pharmacy and 135.5 ± 11.7/79.7 ± 10.0 mm Hg for daytime ambulatory (difference of 2.3 ± 9.5/2.2 ± 6.9 mm Hg [P ≤ .05]). Bland-Altman plots depicted a high degree of BP variability but did not show clinically important systematic BP differences. With ambulatory BP as the reference standard, in-pharmacy device results were similar to automated office results. The PharmaSmart PS-2000 closely approximated mean daytime ambulatory BP, supporting the use of serial readings from this device in the assessment of BP.

Keywords: Measurement; oscillometric; serial readings.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Alberta / epidemiology
  • Automation / methods*
  • Blood Pressure / physiology*
  • Blood Pressure Monitoring, Ambulatory / methods*
  • Circadian Rhythm / physiology*
  • Community Pharmacy Services / statistics & numerical data*
  • Female
  • Humans
  • Hypertension / epidemiology
  • Hypertension / physiopathology*
  • Male
  • Middle Aged
  • Office Visits / statistics & numerical data*
  • Prevalence
  • Reproducibility of Results