Fig. 3

Caregivers’ self-reported ratings of perceived physical strain measured after the observation (where 0 = not physically strenuous at all and 10 = physically very strenuous). Each measurement point on which the box plot is based corresponds to the mean value of each self-reported rating from the two caregivers who participated in the transfer situation at the time of observation. Median phase A = 2.5; median phase B = 1.5