“…As for study design, it was observed that most of the articles (37.9%) used mixed methods 15,16,17,18,19,20,21,22,23,24,25 and the same proportion (31%) adopted qualitative 26,27,28,29,30,31,32,33,34 and quantitative approaches 19,35,36,37,38,39,40,41 . There was variation in sample size and type according to quantitative and/or qualitative design.…”