Table 2 Descriptive Data about E-cig usage among the Study Participants, categorized by users’ Tobacco Cigarette Smoking Status (n = 392)

From: The Era of E-Cigarettes: A Cross-Sectional Study of Vaping Preferences, Reasons for Use and Withdrawal Symptoms Among Current E-Cigarette Users in the United Arab Emirates

Vaping preferences                                                                                      n (%)  
Never smoker (n = 95) Former smoker (n = 185) Current smoker (n = 112) Total (n = 392)
Duration of using E-Cig (years)
 < 1 year 65 (16.6) 136 (34.7) 74 (18.9) 275 (70.2)
 1–3 year 28 (7.1) 38 (9.7) 35 (8.9) 101 (25.8)
 3–5 years 2 (0.5) 11 (2.8) 3 (0.8) 16 (4.1)
Nicotine concentration of E-liquid   
 Zero nicotine 18 (4.6) 16 (4.1) 10 (2.6) 44 (11.2)
 1–10 mg/mL 51 (13.0) 118 (30.1) 63 (16.1) 232 (59.2)
 11–20 mg/mL 7 (1.8) 16 (4.1) 12 (3.1) 35 (9.0)
 21–30 mg/mL 6 (1.5) 10 (2.6) 12 (3.1) 28 (7.1)
 > 30 mg/mL 13 (3.3) 25 (6.4) 15 (3.8) 53 (13.5)
Volume of consumed E-liquid per day
 Less than 2 mL 24 (6.1) 44 (11.2) 21 (5.4) 89 (22.7)
 2–5 mL 59 (15.1) 116 (29.6) 78 (19.9) 253 (64.5)
 More than 5 mL 12 (3.1) 25 (6.4) 13 (3.3) 50 (12.8)
Vehicle of E-liquid
 Mixture of propylene glycol and vegetable glycerin 39 (9.9) 90 (23.0) 75 (19.1) 204 (52.0)
 Propylene glycol alone 4 (1.0) 6 (1.5) 4 (1.0) 14 (3.6)
 Vegetable glycerin alone 5 (1.3) 8 (2.0) 0 13 (3.3)
 Do not know 47 (12.0) 81 (20.7) 33 (8.4) 161 (41.1)
  1. All percentages were calculated based on the total sample (n = 392)