Least squares median (and standard error) joint angles (o) for main effects Device Orientation, Keyboard Layout, and Keyboard Location, and p-values for interactions.a,b

aStatistically significant ANOVA results are in bold.bJoint angles were expressed relative to a reference posture where the longitudinal axes of the forearm and hand were aligned, and the thumb was straight and apposed to the lateral side of the index finger.cThe superscript letters in the table represent results from the Tukey post-hoc analysis: same letters denote groups without significant differences. Values with different letters are ranked such that A>B.