“…Most previous studies on family burden and patients' functional ability use ratings of function carried out by staff [8,15,16], however, our findings together with previous research [26,30] indicates that it might matter for the result, who it is that carries out the rating. Future research should follow up our results since this study has a limited sample and is conducted in a naturalistic northern European context, which might reduce its comparability and the ability to generalize results into other cultural contexts or staff settings [1,34,35].…”