“…Several studies measured functional outcomes using standardized and validated tools such as the GMFCS, the 66-item Gross Motor Function Measure, the Manual Ability Classification System (MACS), and the Communication Function Classification System (CFCS) to report the range of function among children living with CP (Table S 1). 9,11,19,20,32,38,41,43,46,54,63,94,[97][98][99][100][101][102] Studies of cohorts drawn from predominantly hospital-based neurology clinics tended to report a larger proportion of children with more severe gross motor impairments, that is, GMFCS or MACS levels IV and V, 11,20,38,41,46,63,83 compared to communitybased studies. 9,32,43,74,94,97,101 The difference in proportion was up to 55%, with a Ethiopian hospital-based study reporting 75.3% of children classified in GMFCS levels IV and V and 75.5% in MACS levels IV and V, 46 versus 20% of children in GMFCS levels IV and V in a community-based Ugandan study.…”