Table 5.

Spearman correlation of apnea hypopnea index with RatioNEP for each group at each level of pressure and each position

			Seated		Supine
			−5 cm H2O	−10 cm H2O	−5 cm H2O	−10 cm H2O
Controls	RatioNEP	1s	−0.115	0.236	0.093	−0.516*
		0.75s	−0.156	−0.023	< 0.0005	−0.427
		0.5s	−0.133	−0.104	−0.085	−0.436
		0.25s	−0.083	−0.035	−0.334	−0.350
Snorers	RatioNEP	1s	0.066	0.055	0.099	0.188
		0.75s	−0.037	−0.109	0.047	0.220
		0.5s	−0.132	−0.289	−0.041	0.336
		0.25s	−0.303	−0.362	−0.275	0.056
OSAS	RatioNEP	1s	−0.530*	−0.292	−0.523*	−0.517*
		0.75s	−0.508*	−0.329	−0.560*	−0.557*
		0.5s	−0.447*	−0.440	−0.465*	−0.538*
		0.25s	−0.416	−0.357	−0.395	−0.460*

^*P < 0.05