Table 1

Transitions in P12M product use at W2 (2014/15) and W3 (2015/16) among W1 (2013/14) P12M hookah users

YouthYoung AdultsAdults 25+
W1 Exclusive Hookah UseW1 Hookah PTU w/CIGSW1 Hookah PTU w/o CIGSW1 Exclusive Hookah UseW1 Hookah PTU w/CIGSW1 Hookah PTU w/o CIGSW1 Exclusive Hookah UseW1 Hookah PTU w/CIGSW1 Hookah PTU w/o CIGS
Mutually Exclusive PathwaysWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CIWeighted %95% CI
Persistent hookah use type at all waves Continuing the same W1 use type (exclusive, PTU w/CIGS, or PTU w/o CIGS) at each wave6.7†a (3.6 to 12.1)42.2a,c (35.7 to 48.9)12.4c (7.7 to 19.4)7.8a,b (5.5 to 10.9)35.0a,c (32.0 to 38.2)14.8b,c (11.6 to 18.9)7.2a (4.3 to 11.9)25.2a,c (21.6 to 29.3)12.3c (8.3 to 17.7)
Hookah use type reuptake The same broad use type (exclusive or PTU) at W1 and W3 (but a different tobacco use at W2)1.1†a,b (0.3 to 4.5)17.2a,c (13.2 to 22.1)36.1b,c (28.3 to 44.6)4.7a,b (2.8 to 7.8)17.3a,c (15.4 to 19.5)26.0b,c (22.1 to 30.3)1.8†a,b (0.7 to 4.4)11.9a (9.9 to 14.4)12.2b (8.9 to 16.5)
Hookah use type transition Transition from W1 exclusive use to PTU by W3, or transition from W1 PTU to exclusive use by W3 (without discontinuing all tobacco use at W2)41.7a,b (34.9 to 48.9)2.3†a (1.0 to 5.4)1.5†b (0.3 to 6.4)28.3a,b (23.5 to 33.7)1.9a,c (1.2 to 3.0)5.8b,c (4.1 to 8.2)16.2a,b (11.2 to 22.9)1.9†a,c (0.9 to 3.8)5.4b,c (3.3 to 8.8)
Switch or discontinue hookah use, but continue other tobacco use W1 exclusive user who switches to another tobacco product by W3 or W1 polytobacco user that discontinues hookah use by W3 but uses another tobacco product (without discontinuing all tobacco use at W2)11.7a,b (7.3 to 18.3)28.5a (23.3 to 34.4)22.7b (16.4 to 30.7)11.1a,b (8.6 to 14.2)37.7a,c (34.5 to 41.0)24.6b,c (20.6 to 29.0)5.3a,b (3.0 to 9.4)53.2a,c (49.1 to 57.2)36.5b,c (29.5 to 44.1)
Tobacco use reuptake W1 users who discontinue all tobacco use at W2 and use again at W38.3(4.7 to 14.2)2.4†c (1.0 to 5.8)9.4c (5.6 to 15.3)9.6a (6.9 to 13.1)1.9a,c (1.2 to 2.9)5.6c (4.0 to 7.9)11.9a (7.5 to 18.3)1.1†a (0.5 to 2.2)4.6†(2.5 to 8.3)
Discontinue all tobacco use W1 users who discontinue all tobacco use at either W2 and W3 or just W330.5a,b (23.8 to 38.1)7.4a,c (4.9 to 10.9)17.9b,c (12.2 to 25.4)38.5a,b (33.3 to 44.0)6.2a,c (5.0 to 7.6)23.1b,c (19.1 to 27.7)57.6a,b (49.1 to 65.6)6.7a,c (4.9 to 9.1)29.0b,c (21.9 to 37.2)
  • Analysis included youth (ages 12–17), young adult (ages 18–24) and adult 25+ (ages 25 and older) W1 P12M hookah users with data at all three waves. Respondent age was calculated based on age at W1. W3 longitudinal (all-waves) weights were used to calculate estimates. All tobacco use is defined as P12M use. Use type refers to exclusive use, PTU w/CIGS or PTU w/o CIGS.

  • aDenotes Significant difference at p<0.0167 (Bonferroni corrected for three comparisons) between W1 exclusive hookah use and W1 hookah PTU w/CIGS

  • bDenotes Significant difference at p<0.0167 (Bonferroni corrected for three comparisons) between W1 exclusive hookah use and W1 hookah PTU w/o CIGS

  • cDenotes Significant difference at p<0.0167 (Bonferroni corrected for three comparisons) between W1 hookah PTU w/CIGS and W1 hookah PTU w/o CIGS

  • The logit transformation method was used to calculate the 95% CIs.

  • Analyses were run on the W1, W2 and W3 Public Use Files (https://doi.org/10.3886/ICPSR36498.v8).

  • †Estimate should be interpreted with caution because it has low statistical precision. It is based on a denominator sample size of less than 50, or the coefficient of variation of the estimate or its complement is larger than 30%.

  • CI, confidence interval; CIGS, cigarettes; P12M, past 12-month; PTU, polytobacco use; W1, Wave 1; W2, Wave 2; W3, Wave 3; w/, with; w/o, without.