“…4,22 Three studies were undertaken in the middle-income countries of Brazil, 24 India 23 and Egypt. 39 Two studies 23,34 involved paediatric populations, with the remaining 21 papers addressing adult populations, including patients from general wards, 4,20,22,26,28,36,37,39,41 patients in intensive care units (ICUs), 29e31,33,38,40 surgical patients, 35 stroke patients, 32 orthopaedic patients, 27 hip fracture admissions, 21 spinal injury patients 25 and renal transplant patients. 24 The CASP scores for the three caseecontrol studies ranged from nine 22 to six, 20 whilst the prevalence studies, using the adjusted CASP cohort study tool, scored between five 4,37 and 11 36 out of 12.…”