Table 1

Comparison of weighted baseline respondent sociodemographic characteristics stratified by waterpipe and cigarette tobacco smoking in the past 30 days*

 Sociodemographic characteristics Proportion of sample (%) Waterpipe smoking within 30 days (%) Cigarette smoking within 30 days (%) Yes (n=210) No (n=3044) Yes (n=762) No (n=2492) Sex, female 51.0 51.2 51.0 50.7 51.1 Age (years)†‡ 18–20 21.7 36.6 20.9 16.8 23.2 21–23 23.9 26.1 23.7 23.0 24.1 24–26 22.8 24.9 22.7 27.8 21.3 27–30 31.7 12.4 32.7 32.3 31.5 Race and ethnicity§ White, non-Hispanic 57.5 55.1 57.6 58.2 57.3 Black, non-Hispanic 13.2 9.6 13.4 13.9 13.0 Hispanic 20.3 26.4 20.0 22.1 19.8 Other, non-Hispanic 9.0 8.9 9.0 5.8 10.0 Educational level‡ High school or less 39.4 38.7 39.4 52.9 35.3 Some college 38.5 46.3 38.0 36.4 39.1 Bachelor’s degree or higher 22.2 15.0 22.6 10.7 25.7 Household income‡ Under $30 000 19.5 23.6 19.3 27.8 17.0$30 000–$74 999 33.6 34.9 33.5 37.4 32.4$75 000 and above 46.9 41.5 47.2 34.8 50.6
• *Percentage totals may not equal 100 due to rounding. For more information on unweighted data, see table 1 in the online supplementary appendix.

• †Indicates a significant difference between respondents who smoked waterpipe within the past 30 days and those who did not. Significance determined by χ2 tests and a p value <0.05.

• ‡Indicates a significant difference between respondents who smoked a cigarette(s) within the past 30 days and those who did not. Significance determined by χ2 tests and a p value <0.05.

• §Race and ethnic groups were self-reported; the category ‘Other, non-Hispanic’ includes those who self-identified as multiracial.