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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Drug Alcohol Depend. 2011 Feb 25;115(1-2):131–136. doi: 10.1016/j.drugalcdep.2011.01.018

Table 4.

Cross-tabulations of Cigarette and Marijuana Use with Current Waterpipe Use

Current Waterpipe Use Current Waterpipe Use

Current
Cigarette
Smoking
No Yes Total Current
Marijuana
Smoking
No Yes Total

No 2,506a 292 2,798 No 2,610 221 2,831
89.6%b 10.4% 100% 92.2% 7.8% 100%
81.7%c 44.6% 75.2% 85.4% 34.0% 76.4%

Yes 562 363 925 Yes 447 429 876
60.8% 39.2% 100% 51.0% 49.0% 100%
18.3% 55.4% 24.9% 14.6% 66.0% 23.6%

Total 3,068 655 3,723 Total 3,057 650 3,707
82.4% 17.6% 100% 82.5% 17.5% 100%
100% 100% 100% 100% 100% 100%

χ2(df=1)=397.9 χ2(df=1)=784.0
p<.001 p<.001
Cramer’s V=.33 Cramer’s V=.46
n=47 missing n=63 missing

Note.

a

Frequency;

b

Row percentage;

c

Column percentage.