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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Psychiatry Res. 2017 Apr 12;254:104–111. doi: 10.1016/j.psychres.2017.04.024

Table 4.

Binary logistic regression for American (n=236) and Brazilian (n=951) treatment-seeking adults with obsessive-compulsive disorder (OCD)a.

Final model Variables Wald x2 p value Odds Ratio 95% Odds Ratio interval
Lower Upper
- YBOCS obsessions severity 16.942 < .001 1.088 1.045 1.132
- Post-traumatic stress disorderb 13.283 < .001 2.608 1.558 4.367
- Generalized anxiety disorderb 45.132 < .001 4.972 3.114 7.939
- Alcohol-use disorderb 21.898 < .001 .328 .205 .523
- Drug-use disorderb 7.751 .005 .415 .224 .771
Constant .371 .542 1.164 --------- ---------
Model summary: x2=129.362, degrees of freedom = 5, p<.001c
a)

We used the [enter method] strategy in the binary logistic regression.

b)

Lifetime prevalence.

c)

The binary logistic regression final model did not exclude any of the variables that were initially introduced.

Binary logistic regression internal values: 0 = American sample, 1 = Brazilian sample (reference group).