Data referred to outcome measures of the included studies
| Author, year | Sample* | Pre-BMI (kg/m2) | Post-BMI (kg/m2) | Type of surgery: MMA or MMA±Gp | Pre-AHI mean±SD (events/hour) | Post-AHI mean±SD (events/hour) | Success rate | Cure rate |
| Fairburn et al,17 2007 | n=20 | 32.24±4.7 | 31.74±5.0 (p=0.61) | MMA | 69.2±35.8 | 18.6±6.3 | 90% | 50% |
| Jones et al,18 2010 | n=20 | 33.9±8.5 (p=0.61) | 34.7±9.2 (p=0.61) | MMA±Gp | 61.41±19.6 (p>0.01) | 29.4±19.4 (p>0.01) | 65% | NA |
| Ronchi et al,19 2013 | n=15 | NA | NA | MMA±Gp | 58.7±16 (p<0.001) | 8.1±7.8 (p<0.001) | 100% | NA |
| Bianchi et al,20 2014 | n=10 | NA | NA | MMA | 56.8±16.6 (p<0.005) | 12.3±5.5 (p<0.005) | 100% | NA |
| Schendel et al,21 2014 | n=10 | 28.6 | NA | MMA±Gp | 42.9±21.2 | 5.2±8.3 | 100% | NA |
| Hsieh et al,22 2014 | n=16 | 22±3.3 | NA | MMA | 35.7±18.0 (p<0.001) | 4.8±4.4 (p<0.001) | 100% | NA |
| Veys et al,23 2017 * | n=11 | NA | NA | MMA±Gp | 27.7±14.7 (p=0.005) | 8.5±10 (p=0.005) | 70% | 40% |
| de Ruiter et al,24 2017 | n=62 | 29 (27–33) (p=0.609) | NA | MMA | 52±10 (p=0.515) | 16±10 (p=0.515) | 71% | NA |
*In the sample of Veys et al,23 only six pts were assessed out of 11 (pts 1, 2, 3, 5, 7 and 11).
†P values <0.05 were considered as significant (95% CI).
AHI, apnoea–hypopnoea index; BMI, body mass index; Gp, genioplasty; MMA, maxillomandibular advancement;NA, not assessed by the authors; pt, patient.