Table 2.
Variable | Total, n (%) 1042 (100) |
E-cigarette-only user, n (%) 859 (82.4) |
Dual user, n (%) 183 (17.6) |
p-value |
---|---|---|---|---|
Adverse events | ||||
Sore/dry mouth and throat | 39 (3.7) | 30 (3.5) | 9 (4.9) | 0.356 |
Cough | 42 (4.0) | 18 (2.1) | 24 (13.1) | < 0.001 |
Mouth or tongue sores/inflammation | 30 (2.9) | 19 (2.2) | 11 (6.0) | 0.005 |
Gingivitis, gum bleeding | 34 (3.3) | 27 (3.1) | 7 (3.8) | 0.637 |
Headache | 18 (1.7) | 13 (1.5) | 5 (2.7) | 0.251 |
Dizziness | 10 (1.0) | 5 (0.6) | 5 (2.7) | 0.007 |
Heart palpitation | 14 (1.3) | 8 (0.9) | 6 (3.3) | 0.012 |
Breathing difficulties | 10 (1.0) | 6 (0.7) | 4 (2.2) | 0.061 |
Chest pain | 7 (0.7) | 4 (0.5) | 3 (1.6) | 0.078 |
Sleepiness | 3 (0.3) | 2 (0.2) | 1 (0.5) | 0.472 |
Sleeplessness | 3 (0.3) | 2 (0.2) | 1 (0.5) | 0.472 |
Allergy | 2 (0.2) | 2 (0.2) | 0 (0.0) | 0.514 |
Black tongue | 1 (0.1) | 1 (0.1) | 0 (0.0) | 0.644 |
Nose bleeding | 1 (0.1) | 1 (0.1) | 0 (0.0) | 0.644 |
Any adverse event | 149 (14.3) | 101 (11.8) | 48 (26.2) | < 0.001 |
Physiological function | ||||
Breathing | 930 (90.1) | 790 (92.7) | 140 (77.8) | < 0.001 |
Smell | 890 (86.1) | 767 (90.0) | 123 (67.6) | < 0.001 |
Taste | 864 (83.6) | 744 (87.2) | 120 (66.7) | < 0.001 |
Physical status in general | 833 (80.9) | 715 (84.1) | 118 (65.6) | < 0.001 |
Stamina | 800 (77.7) | 697 (82.0) | 103 (57.5) | < 0.001 |
Mood | 524 (51.1) | 461 (54.5) | 63 (35.2) | < 0.001 |
Quality of sleep | 469 (45.8) | 406 (48.1) | 63 (34.8) | 0.001 |
Appetite | 412 (40.4) | 355 (42.2) | 57 (31.7) | 0.009 |
Sexual performance | 351 (34.4) | 306 (36.3) | 45 (25.3) | 0.005 |
Memory | 282 (27.7) | 246 (29.2) | 36 (20.3) | 0.016 |