Table 2. Correlations between the time domain parameters and AHI, MI, and ODI with regard to patients with OSAHS.

Parameters	Mean±SD	AHI		MI		ODI
		r	P	r	P	r	P
MEANRR	841.95±111.78	-0.205	0.327	-0.044	0.835	-0.186	0.373
MEDIANRR	844.99±113.84	-0.180	0.389	-0.017	0.936	-0.162	0.438
MEANHR	72.80±9.33	0.212	0.310	0.052	0.807	0.192	0.359
SDNN	72.07±24.77	0.171	0.414	0.550	0.031*	0.246	0.236
RMSSD	52.65±27.67	-0.126	0.548	0.079	0.707	-0.058	0.781
NN50	66.94±44.29	-0.105	0.616	0.171	0.414	0.028	0.895
pNN50	19.91±13.69	-0.119	0.570	0.155	0.461	0.009	0.967

* P<0.05.