Table 1.

Study sample characteristics among Twitter users and other social media users.

Characteristics		Twitter users		Other social media users
		United States (n=449)	United Kingdom (n=525)	United Kingdom (n=676)	United Kingdom (n=611)
Age (years), mean (SD)		47.7 (13.2)	40.2 (13.4)	50.7 (13.8)	45.3 (14.5)
Females, %		51.0	43.1	51.9	46.0
Non-White, %		32.3	6.9	28.0	6.9
Education, %
	High/secondary school or below	25.2	34.5	34.3	46.8
	Some college/further education college	40.5	36.6	37.7	36.0
	College/university degree or higher	34.3	29.0	28.0	17.2
Never vaped/used an e-cigarette, %		47.7	43.2	48.8	46.8
Social media use, mean (SD; rangea)		2.6 (1.7; 0-8)	3.0 (1.8; 0-8)	1.4 (1.1; 0-7)	1.7 (1.3; 0-7)
Daily internet use, mean (SD; range)		7.2 (4.8; 0-24)	6.1 (4.1; 0-24)	6.3 (4.4; 0-24)	5.3 (3.6; 0-24)