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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Aggress Behav. 2011 Apr 1;37(4):362–373. doi: 10.1002/ab.20391

Table 5.

Results of Sequential Multinomial Logistic Regression to Predict IPV Perpetration Group at T2 Among Intimate Partners at T2 in a Relationship With the Same Partner from T1 (N = 322)

IPV Perpetration Group at T2
Female-only IPV (n = 46) Mutual IPV (n = 50)
Predictor variable Δχ2 Initial OR Final OR Final 95% CI Initial OR Final OR Final 95% CI
Step 1: IPV perpetration
    group at T1
75.54***
    Female-only
    perpetration of IPV
    (T1)a
3.93** 2.61* [1.07, 6.37] 3.11* 1.84 [0.60, 5.70]
    Mutual IPV (T1)a 5.72*** 3.15* [1.19, 8.33] 19.33*** 8.90*** [3.47, 22.84]
Step 2: All other
    predictors
31.75
    Ever Saw Mother Hit
    Father (T0)b
0.60 [0.11, 3.44] 0.56 [0.10, 3.11]
    Ever Saw Father Hit
    Mother (T0)b
0.49 [0.09, 2.81] 1.29 [0.27, 6.12]
Stress (T0) 0.99 [0.93, 1.04] 0.99 [0.93, 1.04]
    Relationship length
    (months) (T1)
1.01 [0.98, 1.03] 1.01 [0.98, 1.04]
    HED (T1) 1.07 [0.71, 1.62] 0.98 [0.62, 1.57]
    Frequency of marijuana
    use (T1)
1.29 [0.95, 1.75] 1.17 [0.84, 1.64]
    Partner’s HED (T1) 1.14 [0.75, 1.72] 1.09 [0.69, 1.71]
    Partner’s freq. of
    marijuana use (T1)
0.90 [0.69, 1.17] 0.87 [0.66, 1.16]
    Partner antisocial
    behavior (T1)
1.03 [0.91, 1.17] 1.10 [0.98, 1.24]
    Relationship
    satisfaction (T1)
1.00 [0.95, 1.06] 1.03 [0.97, 1.09]
    Frequency of
    psychological
    aggression (combined
    perpetration /
    victimization) (T1)
1.02* [1.01, 1.04] 1.03** [1.01,1.05]
Total χ2 104.54***

Note: Reference category for both IPV perpetration groups at T2 is No IPV (n = 226). OR = odds ratio; CI = confidence interval; IPV = intimate partner violence; T0 = baseline (senior year in high school); T1 = first fall semester in college; T2 = first spring semester in college; HED = heavy episodic drinking. N is reduced due to listwise deletion of cases missing data on one or more variables.

a

Dummy variable; reference group is No IPV at T1.

b

Dummy variable coded 1 for yes, 0 for no.

*

p < .05.

**

p < .01.

***

p < .001.

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