Table 4 Group differences in HRV indices.

	Effect	B	Std. Error	95_CI		β	uncorr-p	FDR-corr p
				LL	UL
RMSSD	(Intercept)	−0.695	38.410				0.986	0.986
	group	24.788	7.860	0.162	0.479	0.321	0.002**	0.004**
	age	3.843	2.641	−0.015	0.291	0.138	0.149	0.258
	sex	−12.229	7.099	−0.309	−0.011	−0.160	0.088	0.220
	SES	0.237	1.710	−0.147	0.175	0.014	0.890	0.901
pNN50	(Intercept)	−11.746	23.349				0.616	0.770
	group	15.411	4.778	0.167	0.479	0.323	0.002**	0.004**
	age	2.300	1.606	−0.017	0.285	0.134	0.155	0.258
	sex	−8.050	4.315	−0.318	−0.024	−0.171	0.065	0.220
	SES	0.969	1.040	−0.067	0.249	0.091	0.354	0.901
HF power	(Intercept)	4.546	1.288				0.001**	0.002**
	group	1.253	0.264	0.315	0.600	0.458	0.000^§	0.000^§
	age	0.110	0.089	−0.034	0.257	0.112	0.218	0.273
	sex	−0.294	0.238	−0.251	0.033	−0.109	0.219	0.274
	SES	0.020	0.057	−0.120	0.185	0.033	0.728	0.901
LF power	(Intercept)	5.230	1.236				0.000^§	0.000^§
	group	0.562	0.253	0.067	0.399	0.233	0.028*	0.036*
	age	0.054	0.085	−0.097	0.221	0.062	0.528	0.528
	sex	−0.286	0.228	−0.275	0.034	−0.120	0.213	0.274
	SES	−0.007	0.055	−0.179	0.153	−0.013	0.901	0.901
RSA	(Intercept)	0.271	0.125				0.032*	0.053
	group	0.026	0.025	−0.065	0.277	0.106	0.319	0.319
	age	0.016	0.009	0.022	0.339	0.180	0.072	0.258
	sex	−0.004	0.023	−0.174	0.141	−0.017	0.865	0.865
	SES	−0.004	0.006	−0.236	0.098	−0.069	0.506	0.901

^*p < 0.05, **p < 0.01, ^§p < 0.0001.
Values that meet p < 0.05 (considered significant in this study) are marked in bold.

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