Table 3.

Results of Hierarchical Linear Regression Models Assessing Main Effects and Interactions with Negative Life Events for Fluctuations in Respiratory Sinus Arrhythmia (RSA) and Heart Rate (HR) to Sadness, Recovery from Sadness, and Amusement, Predicting Symptoms of Depression Across Five Waves of Observation over Twelve Weeks.

		Main Effect					Interaction with Negative Life Events
Model	Predictor	B	SE	p	R2	95% CI for R2	B	SE	p	R2	95% CI for R2
	Reactivity to Sad Film
1	RSA	1.14	1.28	.43	.07	−.01–.16	0.21	0.26	.43	.06	−.02–.14
2	RSA (controlling RR)	2.69	1.54	.08	.18	.06–.30	0.57	0.27	.04	.24	.11–.36
3	HR	4.68	2.70	.08	.16	.05–.27	−0.35	0.19	.07	.17	.06–.29
4	HR (controlling RR)	4.71	2.67	.08	.13	.03–.24	−0.29	0.17	.08	.13	.03–.23
	Recovery from Sad Film
5	RSA	1.72	1.09	.12	.13	.03–.24	0.05	0.13	.99	0	0–0
6	RSA (controlling RR)	1.06	0.61	.77	.004	−.02–.03	0.04	0.15	.78	.06	−.02–.14
7	HR	1.07	1.85	.56	.02	−.03–.07	0.88	0.37	.02	.26	.14–.39
8	HR (controlling RR)	1.12	1.84	.54	.02	−.03–.06	0.59	0.38	.12	.11	.01–.20
	Reactivity to Amusement Film
9	RSA	0.79	0.82	.34	.03	−.02–.09	0.01	0.08	.95	0	0–0
10	RSA (controlling RR)	0.41	1.21	.74	.01	−.02–.03	−0.01	0.11	.95	<.001	−.01–.01
11	HR	−1.79	1.01	.08	.16	.05–.27	−0.23	0.09	.01	.28	.15–.40
12	HR (controlling RR)	−1.82	1.08	.09	.12	.02–.23	−0.24	0.10	.01	.24	.11–.36

Note. R² = partial R² of focal predictor (proportion of variance in depression symptoms predicted) after accounting for covariates. In all models, RSA or HR represents the value during the specified period, while controlling for the relevant value during the prior period (e.g., in Model 1, controlling RSA during neutral film when RSA to sad film is focal predictor).