Fig. 5.

Consistency of data regarding mouth open and breathing. The data of mouth opening (identified via camera) and pure mouth breathing pattern (obtained via PSG) were consistent (p values for trend = 0.037). MO ≥ 50%: time spent with mouth open ≥50% of total sleep time, MO<50%: time spent with mouth open <50% of total sleep time, MC: mouth closed (vs MC: ∗ <0.001; MO ≥ 50% vs MO<50%: p < 0.05, Mann–Whitney U test).