International records / Internet Archive

Post hoc protocol and statistical analysis plan for a prospective observational field evaluation of remote photoplethysmography in Nigeria

This registration contains the post hoc protocol and statistical analysis plan for a completed prospective observational multi-site field evaluation of remote photoplethysmography for blood pressure screening in adults with Fitzpatrick skin types V and VI in Kebbi State, Nigeria. The study evaluated feasibility, agreement with automated cuff blood pressure measurement, diagnostic accuracy at the 140/90 mm Hg threshold, patient and staff acceptability, and equity-relevant factors including facial tribal markings and internet bandwidth. This document was deposited after data collection and analy…