“… 16 , 19 , 25 , 28 , 30 , 33 The majority (24 of 28; 85.7%) were cross-sectional studies. 15 – 24 , 26 – 28 , 30 – 40 Approximately half of the studies (13 of 28; 46.4%) were designed to be conducted in community and/or primary health care settings. 15 , 18 , 19 , 22 , 24 , 25 , 28 , 30 – 34 , 37 Of the remaining studies, six were limited to well-defined populations or cohorts of outpatients such as university students, 16 , 17 , 20 , 26 , 41 , 42 four were undertaken on patients with diabetes mellitus and two on postpartum females.…”