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. 2014 Apr 15;10(4):377–383. doi: 10.5664/jcsm.3608

Figure 2. Effect of chin strap use at first follow up visit.

Figure 2

Data from first sleep clinic follow up visit after PSG with in-lab CPAP titration. Chin strap users N = 38, non-users N = 86. Compliance %, percentage of nights PAP used; used duration, nightly duration of PAP use in minutes; PCT ≥ 4 h, percentage of nights used greater than or equal to 4 hours duration; leak is in minutes/ night; ESS, Epworth Sleepiness Score. Residual AHI, apnea-hypopnea index from PAP machine smart card. Results from t-test, * = statistically significant.