Table 1

Predicting Respiratory Symptoms (N = 6,883)

Predictor

B

Standard Error

Wald Test

Odds Ratio

Age

-0.013

.003

19.2*

0.98

Sex

0.351

.066

28.5*

1.42

Cigarettes

0.069

.004

371.9*

1.07

Marijuana

0.021

.003

42.9*

1.02

Vaporizer

-0.911

.424

4.6*

0.40

Cigarettes × Marijuana

-0.158

.035

20.4*

0.85

Vaporizer × Cigarettes

-0.025

.035

0.5

0.98

Vaporizer × Marijuana

0.072

.035

4.2*

1.07

Vaporizer × Cigarettes × Marijuana

-0.003

.003

0.8

0.99

* p < .05

Earleywine and Barnwell Harm Reduction Journal 2007 4:11   doi:10.1186/1477-7517-4-11