Table 6.

Snoring Intensity

	ESRD	Control	p value
Subjective (Sleep History Questionnaire)
Present, %	80	98	< 0.001
Intensity rating	2.6 ± 1.1	3.1 ± 0.9	< 0.001
Disturbance of bed partner	2.3 ± 1.0	3.0 ± 1.0	< 0.001
Partner moved to separate bedroom, %	25	38	NS
Supine dependent, %	60	36	0.001
Objective (Polysomnography)
Mean maximum intensity, dB
Total sleep time	49.0 ± 5.2	55.0 ± 6.7	< 0.001
NREM	49.1 ± 5.3	55.4 ± 6.9	< 0.001
REM	48.8 ± 5.9	53.3 ± 6.4	< 0.001
Non-supine	47.9 ± 5.2	53.9 ± 7.2	< 0.001
Supine	51.0 ± 5.5	56.1 ± 6.7	< 0.001
Classification, %
Mild (40-50 dB)	58	21	< 0.001
Moderate (50-60 dB)	37	52	NS
Severe (<, 60 dB)	5	27	0.002

ESRD = end-stage renal disease. Data are mean ± standard deviation unless otherwise indicated.