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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: J Sex Res. 2012 Mar 16;50(5):470–479. doi: 10.1080/00224499.2011.653607

Table 2.

ZINB Regression Results Examining Condom Use

Predictor B SE B Z Ratio (95% CI)
Logistic Portion of the Model
 Gender −0.145 0.430 −0.340 0.865 (0.372, 2.010)
 Frequency of Sex 0.055 0.026 2.140* 1.057 (1.005, 1.111)
 Typical Drinks per Week −0.039 0.022 −1.730 0.962 (0.921, 1.005)
 Drinking PBS 0.222 0.329 0.670 1.248 (0.654, 2.380)
 Condom PBS −2.459 0.327 −7.510*** 0.086 (0.045, 0.162)

Counts Portion of the Model
 Gender 1.053 0.077 0.700 2.866 (2.490, 3.371)
 Frequency of Sex 1.088 0.005 20.350*** 2.970 (2.944, 2.996)
 Typical Drinks per Week 1.001 0.003 0.320 2.721 (2.704, 2.738)
 Drinking PBS 1.090 0.062 1.510 2.973 (2.651, 3.380)
 Condom PBS 1.325 0.047 8.000*** 3.763 (3.445, 4.137)

Note. n = 427.

*

p < .05.

***

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.