“…This study also addressed a gap in the literature of comparative usability studies. As previously mentioned, there are studies completed looking at individual populations (Crouch et al, 2015;Czaja et al, 2014;Fuji et al, 2015;Gee et al, 2015;Shimada et al, 2014) and individual PHRs (Price, Bellwood, & Davies, 2015;Curtis, Cheng, Rose, & Tsai, 2011;Ozok, Wu, Garrido, Pronovost, & Gurses, 2014;Monkman, & Kushniruk, 2013;Segall et al, 2011;Sheehan & Lucero, 2015), but there have been no studies solely focusing on gaps between different PHRs and attempting to determine a top performing PHR. One study recently completed took the first step in looking at PHRs comparatively (Czaja et al, 2015) but this study investigated "tethered" PHRs, which is a class of PHRs that are connected to a particular EHR.…”