Compared to Individuals with Mild to Moderate Obstructive Sleep Apnea (OSA), Individuals with Severe OSA Had Higher BMI and Respiratory-Disturbance Scores.

A higher respiratory index, a longer N2 (%), and a shorter total sleep time (h) predicted a higher apnea/hypopnea index, while the following predictors were excluded from the equation, as they did not reach statistical significance (all ts < 1.0; ps > .30): age, gender, cardiovascular diseases, hypertension, BMI, neck and waist circumference, daytime sleepiness, subjective OSA (STOP-Bang), subjective sleep disturbances (PSQI), sleep efficiency, average SpO 2 , snore index, REM sleep, and N1 and N3 sleep (%). 4.

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