Table 4.

ZINB Regression Results Examining Alcohol-Related Negative Consequences

Predictor	B	SE B	Z	Ratio (95% CI)
Logistic Portion of Model
Step 1
Gender	0.058	0.195	0.30	1.060 (0.723, 1.553)
Identity	−0.430	0.072	−5.96***	0.650 (0.565, 0.749)
DNorms	−0.084	0.016	−5.30***	0.919 (0.891, 0.948)
INorms Low Severity	−0.330	0.086	−3.82**	0.719 (0.607, 0.851)
INorms High Severity	0.256	0.117	2.90**	1.291 (1.087, 1.535)
Step 2
Identity × INorms Low Severity	−0.160	0.062	−2.57**	0.852 (0.755, 0.963)
Identity × INorm High Severity	0.133	0.061	2.18*	1.143 (1.013, 1.289)
Counts Portion of Model
Step 1
Gender	−0.060	0.058	−1.10	0.942 (0.846, 1.048)
Drinking	0.061	0.004	17.02***	1.063 (1.056, 1.071)
Identity	0.030	0.018	1.68	1.031 (0.995, 1.067)
DNorms	0.004	0.003	1.09	1.004 (0.997, 1.010)
INorms Low Severity	0.067	0.026	2.63**	1.070 (1.017, 1.124)
INorms High Severity	−0.049	0.024	−2.01*	0.952 (0.908, 0.999)
Step 2
Drinking × INorms Low Severity	−0.013	0.003	−3.79***	0.988 (0.981, 0.944)
Drinking × INorms High Severity	0.009	0.003	3.26**	1.009 (1.004, 1.015)
Identity × Drinking	−0.002	0.002	−0.70	0.998 (0.994, 1.003)
Identity × INorms Low Severity	−0.011	0.015	−0.71	0.989 (0.960, 1.020)
Identity × INorms High Severity	0.026	0.014	1.80	1.026 (0.998, 1.056)
Step 3
Identity × Drinking × INorms Low	0.002	0.002	1.09	1.002 (0.998, 1.006)
Identity × Drinking × INorms High	−0.004	0.002	−2.17*	0.996 (0.993, 0.999)

Note. n = 946.

^*p < .05.

^**p < .01.

^***p < .001.

Ratio = zero-inflated odds ratios are presented for the logistic portion of the model and negative binomial incidence rate ratios are presented for the counts portion of the model. Identity = level of identification with the same-sex typical student. DNorms = perceived descriptive drinking norms. INorms Low Severity = perceived injunctive drinking norms for less severe drinking behaviors. INorms High Severity = perceived injunctive drinking norms for more severe drinking behaviors.