TABLE 2.

Number of Men Reporting Having Perpetrated and Not Perpetrated Intimate-partner-violence and Risk Ratios, by Estimated Propensity Score Stratum and Childhood Intimate Partner Violence Witnessing, US Men Ages 20 Years and Older (n = 14,564)^a

Propensity to Have Witnessed Intimate Partner Violence	Witnessed Intimate Partner Violence				RR (95% CI)
	No (n = 12,379)		Yes (n = 2185b)
	Did Not Perpetrate Intimate Partner Violence No.	Penetrated Intimate Partner Violence No.	Did Not Perpetrate Intimate Partner Violence No.	Penetrated Intimate Partner Violence No.
Any intimate partner violence witnessing
0.006–0.022	2838	47	27	0	0
0.022–0.040	2782	60	70	1	0.9 (0.1–7.1)
0.040–0.092	2641	75	187	11	2.3 (1.1–4.7)
0.092–0.240	2354	94	434	32	2.0 (1.3–3.2)
0.240–0.970	1406	84	1312	111	1.3 (0.9–1.9)
Frequent or serious intimate partner violence witnessing
0.001–0.007	2650	41	8	0
0.007–0.013	2630	51	19	0	0
0.013–0.027	2581	77	40	3	3.1 (0.9–10.5)
0.027–0.086	2471	96	127	6	1.5 (0.6–3.9)
0.086–0.987	1688	95	832	84	1.6 (1.1–2.3)

^aAdjusted for emotional support.

^bTwo thousand one hundred eighty-five men were categorized as having witnessed any intimate partner violence (top half of table); 1119, as having witnessed frequent or serious intimate partner violence (bottom half of table).