Table 1.

Search Terms and Criteria.

Category	Specific terms	Criteria
Marketing terms (TITLE, KEYWORD, ABSTRACT, “AND”)	Marketing, advertising, ad, promotion, commercial, coupon, brand(ing), discount, rewards program, sale(s), selling, purchasing, buying, ordering, touchpoints, customer relationship management, conversion, native content, product reviews, media, direct-to-consumer, product placement, concerts, artist	Tobacco brand digital marketing in US, English language
Digital terms (TITLE, KEYWORD, ABSTRACT, “AND”)	Social media, Facebook, Instagram, Twitter, Tweet, YouTube, Snapchat, Pinterest, Tumblr, Reddit, Quora, Yelp, WhatsApp, private groups, discussion group, forums, followers, influencers, brand ambassadors, third-party, games, apps, applications, smartphones, devices, digital, internet, online, mobile, website, webpage, email, blog, vlog, push update(s), e-newsletter, e-subscription, e-marketing, text message, SMS, chat, video, repost, hashtag, impressions, streaming, gaming, meme
Tobacco terms (TITLE ONLY)	Tobacco, nicotine, cigarette, roll-your-own, E-CIGARETTES, electronic cigarette, electronic nicotine delivery systems, E-CIGARETTES, electronic vaping system, mod, cigalike, ego, tank, e-hookah, e-liquid, e-juice, nicotine salts, vaping, vape, smokeless tobacco, dip, chew, snuff, snus, cigar, cigarillo, hookah, waterpipe, narghile, shisha, pipe