The paper gives us reason to believe the maximum rate is probably something less than 1 in 1000: "Anthropometric, clinical and vital status and 10-s OLS data w

The paper gives us reason to believe the maximum rate is probably something less than 1 in 1000: "Anthropometric, clinical and vital status and 10-s OLS data were assessed in 1702 individuals (68% men) aged 51–75 years between 2008 and 2020." "No adverse medical events or accidents occurred during the 10-s OLS testing."