Table 3.

Associations between flavor preferences, harm perceptions, and use of flavored WPT during preconception and pregnancy (N = 58).

	Menthol/Mint^†		Fruit^‡

Predictor	IRR (95% CI)	P	IRR (95% CI)	P
Age	0.98 (0.90, 1.07)	.723	1.08 (0.97, 1.20)	.152
Latina Ethnicity^a	4.01 (1.88, 8.54)	<.001	0.74 (0.28, 1.97)	.546
Flavor Preferences	1.77 (1.39, 2.25)	<.001	1.96 (1.20, 3.19)	.007
Flavor Perceptions
General Harm	0.90 (0.67, 1.22)	.505	1.17 (0.85, 1.62)	.346
Fetal Harm	0.95 (0.73, 1.26)	.740	0.83 (0.58, 1.19)	.312
Dual/Poly WPT Use^b	0.25 (0.12, 0.52)	<.001	1.09 (0.40, 2.93)	.872

Note. WPT=Waterpipe Tobacco. Negative binomial regression with robust variance estimation was used for all count variables (menthol/mint and fruit-flavored WPT events over preconception and 1^st trimester). Age, preferences, and perceptions (general harm, fetus) are continuous variables; ethnicity (1 = Latina; 0 = non-Latina) and use status (1=dual/poly WPT user; 0=WPT-only user) were dummy coded. IRR = incidence rate ratio; CI = confidence interval.

Reference category is non-Latina (0).

Reference category is WPT-only users (0).

^†

Overdispersion parameter: α =1.84 (95% CI = 1.27 to 2.66)

^‡

Overdispersion parameter: α =2.70 (95% CI = 1.57 to 4.64)