TABLE 5.

Bivariate correlations among A_RSA, f_R, HRV, and normalized HRV index in NREM and REM sleep for OSAD+, OSAD- and Control groups.

	OSAD+		OSAD-		Control		OSAD+		OSAD-		Control
			NREM sleep						REM sleep
	p	r	p	r	p	r	p	r	p	r	p	r
fR (breaths/min)	0.803	0.0247	0.001	−0.292	0.3531	0.0943	0.742	0.0347	0.0351	−0.202	0.680	−0.0466
LF (bpm2)	0.0388	0.203	0.0904	0.151	0.0018	0.309	0.134	0.158	0.0866	0.165	0.0001	0.433
HF (bpm2)	0.015	0.220	0.0003	0.317	0	0.676	0.0543	0.201	0.005	0.267	0	0.723
nLF	0.411	0.0815	0.131	−0.135	0	−0.430	0.975	−0.003	0.131	−0.146	0.0003	−0.390
nHF	0.411	−0.0815	0.131	0.135	0	0.632	0.975	0.003	0.131	0.146	0.0003	0.390

Bold value indicates the significant correlation.