“…[47][48][49] Four studies only reported the median of the costs which were not included in the data synthesis. [50][51][52][53] In addition, two studies only reported coping strategies 54,55 and two reported the proportion of catastrophic expenditure without reporting cost data. 56,57 According to the quality assessment for all included studies, 10 studies 26, [37][38][39][40][41]47,51,55,56 were assessed as high quality, 10 studies 27-29,36,42,43,46,52−54 at the middle level and 18 studies 21,23,24,[30][31][32][33][34][35]44,45,48,49,57 as low quality.…”