Demographic characteristics, snoring questionnaires, and polysomnographic parameters among four snore map types.

BMI: body mass index. FTP: Friedman tongue position. NC: neck circumference. VAS: visual analogue scale. SOS: snoring outcome survey. SBPS: spouse/bed partners survey. AHI: apnea-hypopnea index. AI: apnea index. HI: hypopnea index. SI: snoring index. OSAS: obstructive sleep apnea syndrome.†Significance was assessed by a Kruskal Wallis test.‡Significance was tested using a 2-sided Mann-Whitney U test.*A value of P