Table 1.

Results from multilevel negative binomial regression models predicting violence outcomes

	Physical assault high-severity				Physical assault low-severity				Physical assault high-severity				Injury
Predictors	B	SE	z	P>|z|	B	SE	z	P>|z|	B	SE	z	P>|z|	B	SE	z	P>|z|
Step 1: Baseline
Own baseline cortisol	2.78	1.47	1.89	0.059	0.66	0.30	2.15	0.032	1.62	0.65	2.49	0.013	2.66	8.76	2.36	0.018
Partner baseline cortisol	1.65	1.56	1.06	0.291	0.24	0.33	0.73	0.464	1.29	0.63	2.07	0.039	8.57	8.12	1.06	0.291
Step 2: Reactivity
Own reactivity	0.09	2.48	0.04	0.972	6.07	6.10	1.00	0.319	−2.73	9.18	−0.30	0.766	−9.50	13.80	−0.69	0.491
Partner reactivity	0.62	2.61	0.24	0.813	1.84	6.69	0.28	0.783	1.41	8.45	0.17	0.868	8.32	11.27	0.74	0.461
Step 3: Recovery
Own recovery	−10.41	5.29	1.97	0.049	−4.66	12.70	−0.37	0.714	−34.22	25.70	−1.33	0.183	−58.58	28.09	−2.09	0.037
Partner recovery	5.47	5.16	1.06	0.289	35.37	17.81	1.99	0.047	44.94	25.22	1.78	0.075	60.67	28.34	2.14	0.032
Own recovery × Gender	13.48	6.71	2.01	0.045	21.60	16.17	1.34	0.182	50.67	32.62	1.55	0.120	88.32	40.34	2.19	0.029
Partner recovery × Gender	−15.23	6.85	2.22	0.026	−53.65	19.98	−2.68	0.007	−74.48	33.88	−2.20	0.028	−90.14	39.15	−2.30	0.021

Note: Step 2 includes control for baseline cortisol values, and Step 3 includes control for baseline and reactivity cortisol values. Bold-face indicates significance at p<.05, italics indicates significance at p<.10. Own cortisol refers to the perpetrating individual’s own cortisol baseline, reactivity, or recovery score. Gender: 0=male, 1=female.