. Author manuscript; available in PMC: 2017 Aug 2.

Published in final edited form as: Soc Inform (2016). 2016 Oct 19;10047:307–322. doi: 10.1007/978-3-319-47874-6_22

Table 1. Content and user characteristics of the datasets.

	Marketing	Non-marketing
E-cig flavors	25472	4612
Harm reduction	19	2256
Smokefree aspect	553	3201
Smoking cessation	6363	22421
Contain “FDA”	204	18297

Number of unique users	66,957	231,982
User handles containing e-cig terms	4777 (7.1 %)	3859 (1.7 %)
Avg. # tweets per user	6.81 (σ = 197)	2.44 (σ = 84)