Key result
The WatchBP Office Target device showed the highest correlation with the gold standard for systolic blood pressure, and tablets were preferred by health workers for data collection.
Why the study?
Hypertension is a leading cause of mortality in LMICs, and appropriate local methods for blood pressure assessment and data collection need evaluation before adapting a Canadian cardiometabolic health program.
Which automated blood pressure devices and data collection methods are most accurate and preferred by lay volunteers for a cardiometabolic health program in the Philippines?
Observational
Which automated blood pressure devices and data collection methods are most accurate and preferred by lay volunteers for a cardiometabolic health program in the Philippines?
The WatchBP Office Target device and tablet-based data collection are the most accurate and preferred methods for lay volunteers conducting cardiometabolic health assessments in the Philippines.
Answers are grounded in this paper and cite their sources.
May support WatchBP tablets for volunteer-led BP screening in the Philippines; leaves open larger validation trials before practice change.
Background Hypertension is a leading cause of mortality worldwide, especially in low- and middle-income countries (LMICs). In Canada, the Cardiovascular Health Awareness Program (CHAP) was proven effective in reducing cardiovascular hospitalizations. The next research will evaluate an adapted version of CHAP in the southern Philippines (Community Health Assessment Program in the Philippines (CHAP-P)). Methods Prior to full program adaptation, this two-phase study was conducted to evaluate the most appropriate methods locally for 1) assessing blood pressure (BP) readings and 2) collecting CHAP-P participant information. Phase 1 compared the correlation (Pearson's r ) of BP readings of three automated BP monitoring devices (WatchBP Office Target, Omron HEM-7130, Microlife 3QA1); manual measurement by a health care professional; and the gold standard (trained observers using a mercury sphygmomanometer). Phase 2 compared three data collection methods (tablet, cell phone, and paper) used by Barangay Health Workers (BHWs), the local volunteers who will implement the intervention. Errors, missed data, and BHW experiences were explored during each phase. Results Phase 1: the device most highly correlated with the gold standard for systolic BP was the WatchBP Office Target ( r = 0.84). For diastolic BP, the WatchBP Office Target produced the same result as the Omron HEM-7130 ( r = 0.67). Manual BP measurement showed a very poor correlation ( r < 0.60) with the gold standard. Phase 2: BHWs found cell phones and tablets more accurate and easier than paper. They preferred tablets due to the larger screen. Conclusion The WatchBP Office target and tablet will be used in the next phase of the project.
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Angeles et al. (2024) conducted an observational in Hypertension. Automated BP monitoring devices (WatchBP Office Target, Omron HEM-7130, Microlife 3QA1) vs. Mercury sphygmomanometer was evaluated on Correlation of systolic BP readings with gold standard (r = 0.84). The WatchBP Office Target device showed the highest correlation with the gold standard for systolic blood pressure, and tablets were preferred by health workers for data collection.
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