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Table 5 Age, body mass index (BMI), and apnea-hypopnea index (AHI) of the studies investigating pharyngeal airway changes in maxillomandibular advancement (MMA)

From: Why most patients do not exhibit obstructive sleep apnea after mandibular setback surgery?

 Age (years)BMI before surgery (kg/m2)AHI (before surgery)AHI (after surgery)
 Average± SD or (range)Average± SD or (range)Average± SD or (range)Average± SD or (range)
Conradt (1997) [37]44± 1228.3± 3.451.4± 16.98.5± 9.4
Li (2000) [38]45.6± 20.731.4± 6.771.2± 27.07.6± 5.1
Fairburn (2007) [33]47.6± 1032.244.769.2± 35.818.6± 6.3
Jones (2010) [39]  33.9± 8.561.41± 19.629.4± 19.4
Dekeister (2006) [40]48± 7283.445.4± 18.1 (30–88)8.3± 6.8 (1–32)
Jaspers (2013) [41]53.8± 9.1  36.2± 23.8 (16–81)11.3± 16.1 (1–43)
Ronchi (2013) [42]42.3± 9.5  58.7± 168.1± 7.8
Bianchi (2014) [12]45± 14  56.8± 16.612.3± 5.5
Schendel (2014) [13]46.4± 9.728.6 42.9± 21.25.2± 8.3
Hsieh (2014) [43]33± 7.9223.335.7± 18.04.8± 4.4
Boyd (2015) [44]48.4± 8.129.14.150.4± 19.7 (17–87.6)8± 10.7 (0.2–41.7)
Vigneron (2016) [45]40.7± 12.624.6456.7± 23.925.5± 20.6
Veys (2017) [46]44.7± 9.5  27.7± 14.78.5± 10
de Ruiter (2017) [47]5447–612927–3352.1± 1016± 10
Total45.7 ± 5.4 28.7 ± 3.5 51.1 ± 12.6 12.3 ± 7.5