50% of those 10% positive cases were atrial fibrillation which is pretty serious (can lead to stroke), and wouldn't be diagnosed at a routine checkup as it requ

50% of those 10% positive cases were atrial fibrillation which is pretty serious (can lead to stroke), and wouldn't be diagnosed at a routine checkup as it requires an ECG https://academic.oup.com/jamia/article/27/9/1359/5911974 https://academic.oup.com/jamia/article/27/9/1359/5911974