Table 1.

Constructs, questions, and operationalization of e-cigarette measures (2014–2015).

Constructs	Questions and responses
	TATAMSa	M-PACTb	TPRPSc	Operationalization
Behaviors
Ever use	Have you EVER used an electronic cigarette, vape pen, or e-hookah, even one or two puffs? No/Yes	Have you ever used an ENDSd product, (i.e. e-cigarette, vape pen, or e-hookah) as intended (i.e. with nicotine cartridges and/or e-liquid/e-juice), even one or two puffs? No/Yes	Have you ever used electronic vapor products, even one or two times? No/yes	0 = No; 1 = Yes
Current use	During the past 30 days, on how many days did you use an electronic cigarette, vape pen, or e-hookah? Please enter the number of days (from 0 to 30 days) 0–30	During the past 30 days, have you used any ENDS product, (i.e. an e-cigarette, vape pen, or e-hookah), even one or two puffs, as intended (i.e. with nicotine cartridges and/or e-liquid/ejuice)? No/yes	In the past 30 days, have you used electronic vapor products, even one or two times? No/yes	TATAMS: 0 = no; 1 = yes, ≥ 1 day Others: 0 = no; 1 = yes
Flavors
Flavor use at initiation	Think back to the FIRST electronic cigarette, vape pen, or e-hookah you tried. What flavor was it? Tobacco; menthol or mint; Candy, such as gummy bear Fruit, such as grape; Coffee or an alcoholic drink, such as wine; Spice, such as cinnamon; other flavor; I don't remember	When you first started using any ENDS products (i.e. e-cigarettes, vape pens, or e-hookah), were they flavored to taste like… Check all that apply Tobacco; Not flavored; Menthol or Mint; Candy (e.g. chocolate, vanilla); Fruit (e.g. strawberry, banana); Coffee or an alcoholic drink (e.g. pina colada); Other I don't remember, but I know it was flavored	When you first started using electronic vapor products, were they flavored? No-unflavored; yes-tobacco flavored; yes-flavored but not tobacco flavor; don't remember	Unflavored; Tobacco flavored; Flavored, not tobacco
Current flavor use	When you use an electronic cigarette, vape pen, or e-hookah, do you usually use any of the following flavors? (yes or no response for each flavor) Tobacco; menthol or mint. Candy, such as gummy bear; Fruit, such as grape; Coffee or an alcoholic drink, such as wine; Spice, such as cinnamon; other flavor	Is your usual brand of disposable e-cigarette or e-cigarette with disposable nicotine cartridges flavored to taste like… AND When you use a vape pen/personal vaporizer, do you usually use e-liquid/e-juice flavored to taste like… (yes or no response for each flavor) Tobacco; Not flavored; Menthol or Mint; Candy (e.g. chocolate, vanilla) Fruit (e.g. strawberry, banana); Coffee or an alcoholic drink (e.g. pina colada); Other	In the past 30 days, have you used electronic vapor products that are flavored (including tobacco flavor)? Yes/no If NO, they are coded as unflavored product users. If YES, they are asked the question stated here. Which flavors have you used in electronic vapor products in the past 30 days? (yes or no response for each flavor) Mint, wintergreen, menthol; fruit (e.g. cherry, blueberry, strawberry, watermelon, coconut, etc.); coffee (coffee or any related flavor–e.g. espresso, latte, cappuccino, etc.); candy or dessert flavors (e.g. caramel, vanilla, chocolate, ice cream, mud pie); Spice (e.g. clove, cinnamon, nutmeg); Alcohol or cocktail (e.g. wine, bourbon, rum, brandy, tequila, whiskey beer, mai-tai, daiquiri); Tobacco flavor; Some other flavor	Unflavored; Tobacco flavored; Flavored, not tobacco Tobacco flavored; mint/menthol; fruit Coffee/alcohol; candy/dessert; spice; other
Reasons to use: flavors	How much do you agree or disagree with the following statements? I tried using electronic cigarette, vape pen, or e-hookah because electronic cigarettes come in flavors I like. Strongly disagree; disagree; agree; strongly agree	I tried ENDS products (i.e. e-cigarettes, vape pens, or e-hookah) as intended because… they came in flavors I liked.	Please indicate how important it is to you in your use of electronic vapor products. They come in flavors I like was measured using 6 point Likert scale where, 0 (not at all important) and 6 (very important)	TATAMS: 0 = strongly disagree/disagree; 1 = agree/strongly agree M-PACT: 0 = no; 1 = yes TPRPS: 0–3 = no; 4–6 = yes

^aTATAMS-The Texas Adolescent Tobacco and Marketing Surveillance System.

^bM-PACT- Marketing and Promotions Across Colleges in Texas Project.

^cTPRPS- The Tobacco Products and Risk Perceptions Survey.

^dENDS- Electronic Nicotine Delivery Systems.