TABLE 3.

Incident Rate Ratios (IRRs) From Negative Binomial Regressions Predicting Past Year Maternal Psychological and Physical Aggression: Fragile Families and Child Well-Being Study, 2001–2004

	Psychological Aggression				Physical Aggression
	Model 1 (n = 2483), IRR (95% CI)	Model 2 (n = 2478), IRR (95% CI)	Model 3 (n = 2481), IRR (95% CI)	Model 4 (n = 2415), IRR (95% CI)	Model 1 (n = 2482), IRR (95% CI)	Model 2 (n = 2477), IRR (95% CI)	Model 3 (n = 2480), IRR (95% CI)	Model 4 (n = 2414), IRR (95% CI)
IPV	1.19† (1.10, 129)	1.12** (1.03, 1.21)	1.16† (1.07, 1.26)	1.18† (1.09, 1.28)	1.12 (1.01, 1.25)	1.05 (0.94, 1.17)	1.08 (0.97, 1.20)	1.16** (1.04, 1.29)
Parenting stress		1.03† (1.02, 1.03)		1.02† (1.02, 1.03)		1.03† (1.02, 1.03)		1.02† (1.02, 1.03)
Major depression			1.30† (1.18, 1.43)	1.13 (1.03, 1.25)			1.39† (1.22, 1.59)	1.18 (1.03, 1.34)
Maternal characteristics
Age				0.99 (0.98, 1.00)				0.98† (0.97, 0.99)
Ethnicity†
Black (Ref)				1.00				1.00
Hispanic				0.81 (0.73, 0.90)				0.61 (0.53, 0.70)
White				0.92 (0.82, 1.03)				0.77 (0.67, 0.89)
Other				1.06 (0.85, 1.31)				0.97 (0.73, 1.30)
Foreign born				0.71† (0.62, 0.81)				0.65† (0.55, 0.77)
Partner characteristics
Education
Less than high school (Ref)				1.00				1.00
Completed high school				0.88 (0.79, 0.99)				1.00 (0.86, 1.16)
Some college				0.90 (0.79, 1.02)				0.98 (0.83, 1.16)
Completed college				0.80 (0.68, 0.95)				0.73** (0.58, 0.91)

Note. IPV = intimate partner violence. Model 4 included all risk and demographic variables listed in Table 1 along with 2 additional variables: birth city and marital status at birth. However, only those maternal, partner, and household characteristics that were statistically significant at P ≤ .01 for at least 1 of the 2 child maltreatment variables in this table are presented. The omnibus χ² test was used to test for any differences in outcome because of ethnicity, education, or relationship status.

**P ≤ .01; †P < .004.