“…Nine studies (28-30, 38, 40, 41, 44, 46, 47) took place in the acute setting, 8 (26,33,37,39,42,43,45,48) in nursing homes, 5 (25,31,32,34,36) in the community, and 2 (27,35) in sheltered accommodation. Sample sizes ranged from 21 to 5571 patients or residents, and from 11 to 592 health care staff.…”