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. 2020 Oct 7;28(30):40346–40354. doi: 10.1007/s11356-020-11038-x

Table 1.

Characteristics of the study population based on smoking status (n = 944)

Study characteristics Never smokers Waterpipe smokers Cigarette smokers DualΨ Ex-smokers P value*
Overall 511 (54.1%) 89 (9.4%) 158 (16.7%) 14 (1.5%) 172 (18.2%)
Mean age ± SD (years) 35.3 ± 10.8 35.1 ± 9.6 38.3 ± 10.4 33.7 ± 10.7 35.9 ± 12.0 .042
Gender
Male 260 (50.9%) 62 (69.7%) 140 (88.6%) 12 (85.7%) 127 (73.8%) < .001
Female 251 (49.1%) 27 (30.3%) 18 (11.4%) 2 (14.3%) 45 (26.2%)
Education
≤ High school 93 (18.2%) 31 (34.8%) 52 (32.9%) 5 (35.7%) 46 (26.7%) < .001
> High school 418 (81.8%) 58 (65.2%) 106 (67.1%) 9 (64.3%) 126 (73.3%)
Residential area
Urban 480 (93.9%) 72 (80.9%) 142 (89.9%) 14 (100.0%) 149 (86.6%) < .001
Nonurban/rural 31 (6.1%) 17 (19.1%) 16 (10.1%) 0 (0.0%) 23 (13.4%)
Has a doctor told you that you have COVID-19? (yes) 17 (3.3%) 4 (4.5%) 2 (1.3%) 2 (14.3%) 3 (1.7%) .046
Is anyone in your family infected with COVID-19? (yes) 30 (5.9%) 7 (7.9%) 7 (4.4%) 3 (21.4%) 10 (5.8%) .129
In your opinion, how related is cigarette smoking to spreading infection of COVID-19?
Not related/ I do not know¥ 331 (64.8%) 76 (85.4%) 135 (85.4%) 14 (100.0%) 122 (70.9%) < .001
Related 180 (35.2%) 13 (14.6%) 23 (14.6%) 0 (0.0%) 50 (29.1%)
In your opinion, how related is waterpipe smoking with spreading infection of COVID-19?
Not related/I do not know¥ 233 (45.6%) 55 (61.8%) 91 (57.6%) 13 (92.9%) 87 (50.6%)
Related 278 (54.4%) 34 (38.2%) 67 (42.4%) 1 (7.1%) 85 (49.4%)
In your opinion, how related is e-cigarette use with spreading infection of COVID-19?
Not related/ I do not know¥ 397 (77.7%) 86 (96.6%) 143 (90.5%) 13 (92.9%) 145 (84.3%)
Related 114 (22.3%) 3 (3.4%) 15 (9.5%) 1 (7.1%) 27 (15.7%)
In your opinion, how safe is it to use cigarettes at home during the COVID-19 pandemic?
Not safe 281 (55.0%) 53 (59.6%) 60 (38.0%) 4 (28.6%) 95 (55.2%) < .001
Safe 85 (16.6%) 20 (22.5%) 48 (30.4%) 6 (42.9%) 32 (18.6%)
I do not know 145 (28.4%) 16 (18.0%) 50 (31.6%) 4 (28.6%) 45 (26.2%)
In your opinion, how safe is it to use waterpipe at home during the COVID-19 pandemic?
Not safe 316 (61.8%) 38 (42.7%) 68 (43.0%) 4 (28.6%) 101 (58.7%) < .001
Safe 87 (17.0%) 42 (47.2%) 33 (20.9%) 5 (35.7%) 30 (17.4%)
I do not know 108 (21.1%) 9 (10.1%) 57 (36.1%) 5 (35.7%) 41 (23.8%)
In your opinion, how safe is it to use e-cigarettes at home during the COVID-19 pandemic?
Not safe 232 (45.4%) 34 (38.2%) 44 (27.8%) 2 (14.3%) 65 (37.8%) < .001
Safe 75 (14.7%) 13 (14.6%) 32 (20.3%) 5 (35.7%) 28 (16.3%)
I do not know 204 (39.9%) 42(47.2%) 82 (51.9%) 7 (50.0%) 79 (45.9%)
In your opinion, how safe is it to use cigarettes in public during the COVID-19 pandemic?
Not safe 371 (72.6%) 39(43.8%) 81(51.3%) 10 (71.4%) 124 (72.1%) < .001
Safe 40 (7.8%) 34 (38.2%) 39 (24.7%) 0 (0.0%) 13 (7.6%)
I do not know 100 (19.6%) 16 (18.0%) 38 (24.1%) 4 (28.6%) 35 (20.3%)
In your opinion, how safe is it to use waterpipe in public during the COVID-19 pandemic?
Not safe 402 (78.7%) 56 (63.6%) 93 (58.9%) 7 (50.0%) 139 (80.8%) < .001
Safe 21 (4.1%) 23 (26.1%) 17 (10.8%) 1 (7.1%) 7 (4.1%)
I do not know 88 (17.2%) 9 (10.2%) 48 (30.4%) 6 (42.9%) 26 (15.1%)
In your opinion, how safe is it to use e-cigarettes in public during the COVID-19 pandemic?
Not safe 317 (62.0%) 34 (38.2%) 59 (37.3%) 4 (28.6%) 112 (65.1%) < .001
Safe 31 (6.1%) 28 (31.5%) 29 (18.4%) 2 (14.3%) 12 (7.0%)
I do not know 163 (31.9%) 27 (30.3%) 70 (44.3%) 8 (57.1%) 48 (27.9%)
In your opinion, how much safer are e-cigarettes as a substitute to any form of smoking during the COVID-19 pandemic?
Not safe/I do not know¥ 499 (97.7%) 87 (97.8%) 150 (94.9%) 12 (85.7%) 169 (98.3%) .030
Safe 12 (2.3%) 2 (2.2%) 8 (5.1%) 2 (14.3%) 3 (1.7%)
In your opinion, what will be the outcome of a cigarette smoker who is infected by COVID-19?
Similar to non-smokers 97 (19.0%) 27 (30.3%) 47 (29.7%) 7(50.0%) 34 (19.8%) < .001
Recover soon 13 (2.5%) 14 (15.7%) 9 (5.7%) 1 (7.1%) 2 (1.2%)
Worsen the disease 401 (78.5%) 48 (53.9%) 102 (64.6%) 6 (42.9%) 136 (79.1%)
In your opinion, what will be the outcome of a hookah smoker who is infected by COVID-19?
Similar to non-smokers 96 (18.8%) 24 (27.0%) 52 (32.9%) 8 (57.1%) 32 (18.6%) < .001
Recover soon 8 (1.6%) 18 (20.2%) 4 (2.5%) 1 (7.1%) 2 (1.2%)
Worsen the disease 407 (79.6%) 47 (52.8%) 102 (64.6%) 5 (35.7%) 138 (80.2%)
In your opinion, what will be the outcome of an e-cigarette user who is infected by COVID-19?
Similar to non-smokers 225 (44.0%) 60 (67.4%) 102 (64.6%) 9 (64.3%) 80 (46.5%) < .001
Recover soon 8 (1.6%) 4 (4.5%) 3 (1.9%) 1 (7.1%) 4 (2.3%)
Worsen the disease 278 (54.4%) 25 (28.1%) 53 (33.5%) 4 (28.6%) 88 (51.2%)
Does using tobacco products protect an individual against COVID-19?
Not only is not protective, but also can cause disease 387 (75.7%) 49 (55.1%) 101 (63.9%) 8 (57.1%) 136 (79.1%) < .001
Yes, have a protective effect 21 (4.1%) 23 (25.8%) 14 (8.9%) 4 (28.6%) 9 (5.2%)
I do not know 103 (20.2%) 17 (19.1%) 43 (27.2%) 2 (14.3%) 27 (15.7%)

*Note: due to very low total number of participants answered “I don’t know” to these questions, we combined this response option with not related/safe. Ψ Dual use of waterpipe and cigarette smokers. *P-values are based on chi-squared test.