Daily angina documentation versus subsequent recall: development of a symptom smartphone app.
Alexandra N NowbarJames P HowardMatthew J Shun-ShinChristopher RajkumarMichael J FoleyArunima BasuAkshit GoelSapna PatelAhmer AdnanCatherine J BeattieThomas R KeebleAfzal SohaibDavid CollierPatrick McVeighFrank E HarrellDarrel P FrancisRasha K Al-LameePublished in: European heart journal. Digital health (2022)
Episode counts of angina are difficult to recall after a few days. For trials such as ORBITA-2 focusing on angina, daily symptom collection via a smartphone app will increase the validity of the results.