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Table 1 Participant characteristics (N = 62)

From: Contexts of cigarette and e-cigarette use among dual users: a qualitative study

Characteristics Mean (SD)/Frequency (n)
Age 25.1 (5.5)
Gender  
 Male 63 % (39)
 Female 37 % (23)
Ethnicity  
 Asian-American 19 % (12)
 African-American 8 % (5)
 Filipino 12 % (8)
 Hispanic/Latino 7 % (4)
 Native Hawaiian/other Pacific Islander 23 % (14)
 White 31 % (19)
Annual Income  
 0–$19,999 30 % (18)
 $20,000–$29,999 16 % (10)
 $30,000–$39,999 13 % (8)
 $40,000–$49,999 20 % (12)
 $50,000 or more 21 % (13)
Length of time having been using e-cigarettes  
 Less than a week 0 % (0)
 About 1–2 weeks 2 % (1)
 About 1 month 12 % (7)
 About 2–5 months 26 % (16)
 About 6 months 15 % (9)
 About 7–11 months 5 % (3)
 About 1 year 21 % (13)
 More than a year 20 % (12)
Size of e-liquid container usually bought  
 15 ml 68 % (39)
 30 ml 32 % (18)
 Other 0 % (0)
Length of time a container lasts  
 More than a month 23 % (14)
 About a month 16 % (10)
 3–4 weeks 10 % (6)
 1–2 weeks 38 % (23)
 Less than a week 8 % (5)
 2–3 days 3 % (2)
 1 day 2 % (1)
 Less than a day 0 % (0)
Daily e-cigarette use behavior  
 Vape only few times a day 26 % (16)
 Vape frequently but only at certain times of the day 18 % (11)
 Vape frequently throughout the day 40 % (25)
 Vape constantly throughout the day 16 % (10)
Lifetime cigarette use  
 Never smoked a cigarette 3 % (2)
 Smoked < 100 cigarettes 18 % (11)
 Smoked ≥ 100 cigarettes 79 % (49)
Cigarette use behavior  
 Do not smoke 16 % (10)
 Smoke sometimes 36 % (22)
 Smoke daily 48 % (30)
Past-30-day cigarette use  
 Yes 63 % (39)
 No 37 % (23)
  1. Note. % values were rounded to the nearest whole number