Type of missions | Number of studies included | Oxford CEBM Level of Evidence | Average GRADE score |
Cleft care mission studies | 28 studies | 24 Level IV studies (case series) 4 Level IIB (economic studies) | 2.6 (quality: low–moderate) |
Post-burn contractures mission studies | 5 studies | 5 Level IV studies (case series) | 3.4 (quality: moderate) |
Noma mission studies | 4 studies | 4 Level IV studies (case series) | 4.3 (quality: high) |
General reconstructive surgery mission studies | 4 studies | 4 Level IV studies (case series) | 1.3 (quality: very low–low) |
Overall quality and level of recommendation | 41 studies | 37/41 Level IV studies 4/41 Level IIB studies Level C recommendations | 2,7 (quality: low–moderate) |
Information listed per condition. Quality assessment of included studies was performed using the GRADE system68 and Oxford CEBM Level of Evidence.