Home blood pressure monitors are wrong 70% of time: Study
A Canada-based study claims 70% of readings from home blood pressure monitors weren't accurate within five mmHg (monitor's mercury level), which could have serious implications for people relying on them to make informed health decisions. Researchers further found the readings to be off by 10 mmHg 30% of the time, an "unacceptable" error when normal pressures range between 80-120 mmHg.