Table 2.

RatioNEP and RatioEMG at different time points at a pressure of −5 cm H2O in the seated position

	Controls	Snorers	OSAS
RatioNEP
N	20	20	20
RatioNEP 1s	3.0 ± 0.6*	2.1 ± 0.4	1.8 ± 0.5
RatioNEP 0.75s	3.5 ± 0.8*	2.4 ± 0.5	2.0 ± 0.5
RatioNEP 0.5s	4.9 ± 1.7*	2.9 ± 0.7	2.5 ± 0.7
RatioNEP 0.25s	12.8 ± 8.8*	5.5 ± 1.9	4.9 ± 1.9
RatioEMG
N	17	17	17
RatioEMG 1s	1.1 ± 0.4	1.1 ± 0.3	1.2 ± 0.3
RatioEMG 0.75s	1.0 ± 0.4	1.2 ± 0.4	1.2 ± 0.3
RatioEMG 0.5s	1.1 ± 0.3	1.4 ± 0.6	1.2 ± 0.4
RatioEMG 0.25s	1.3 ± 0.7	1.8 ± 1.0	1.3 ± 0.5

Data depicted as mean ± SD.

^*There were significant differences in RatioNEP for all time points between controls vs. snorers and controls vs. OSAS (both P < 0.0001). There were no significant differences in RatioNEP for snorers vs. OSAS. There were no significant differences in RatioEMG between any of the groups.