Table 5.

Hierarchical regression analysis for subjective extinction recall (sERI; N=85). Addition of HF[ms²] significantly increased the proportion of variance explained by the model. Note that smaller sERI denotes better extinction recall. HF[ms2]: Absolute power of high frequency heart rate variability; REMD: REM density.

Model	Predictors	B	SE	β	t	p		95% CI
1	Age	−.506	.630	−.085	−.803	.424	−1.761	.748
	Sex	−.224	7.153	−.004	−.031	.975	−14.458	14.010
	Medications	−14.982	8.278	−.203	−1.810	.074	−31.456	1.492
	REMD	2.917	.970	.348	3.006	.004	.986	4.849
									Change			ANOVA
									∆F	p	Adj. R2	F	p
2	Age	−.678	.616	−.114	−1.100	.274	−1.905	.549	5.834	0.018	0.133	3.566	0.00
	Sex	.830	6.960	.013	.119	.905	−13.022	14.683
	Medications	−18.809	8.194	−.255	−2.296	.024	−35.118	−2.500
	REMD	2.638	.950	.314	2.778	.007	.748	4.528
	HF[ms2]	−7.048	2.918	−.255	−2.415	.018	−12.857	−1.240