Table 3 Tobacco/nicotine use profile in healthcare workers and SARS-Co-V2 test result (n = 4040)
|  | Total | SARS-Co-V2 test | χ2 | p-valuea | Proportion of positive test | |
|---|---|---|---|---|---|---|
Negative | Positive | |||||
N = 4040 | n = 3770 | n = 270 | Overall = 6.7 (5.9–7.5) | |||
n (%) | n (%) | n (%) | Â | Â | row % (95% CI) i.e. SARS-Co-V2 positive test/Total | |
Tobacco/nicotine use status | ||||||
 Never | 3482 (86.1) | 3239 (58.9) | 243 (90.0) | 3.532 | 0.060 | 7.0 (6.1–7.8) |
 Former | 79 (2.0) | 75 (2.3) | 4 (1.6) | 0.439 | 0.508 | 5.1 (0.1–10.0) |
 Current | 479 (11.9) | 456 (12.1) | 23 (8.5) | 3.085 | 0.079 | 4.8 (2.9–6.7) |
Current users | ||||||
 Number of product use | N = 479 | n = 456 | n = 23 |  |  |  |
  Single | 400 (83.5) | 380 (83.3) | 20 (87.0) | 0.209 | 1.000 | 5.0 (2.9–7.2) |
  Multiple | 79 (16.5) | 76 (16.7) | 3 (13.0) | 3.8 (−0.5–8.1) | ||
Daily current use | ||||||
 Non-daily | 92 (19.2) | 88 (19.3) | 4 (17.4) | 0.051 | 1.000 | 4.4 (0.1–8.6) |
 Daily | 387 (80.8) | 368 (80.7) | 19 (82.6) | 4.9 (2.8–7.1) | ||
Type and frequency of current useb | ||||||
 Cigarettes | 440 (91.9) | 418 (91.7) | 22 (95.7) | 0.465 | 1.000 | 5.0 (2.9–7.0) |
 Daily use, n | 366 | 348 | 18 |  |  |  |
 Waterpipe | 96 (20.0) | 93 (20.4) | 3 (13.0) | 0.738 | 0.593 | 3.1 (−0.4–6.7) |
 Daily use, n | 70 | 67 | 3 |  |  |  |
 Roll your own | 19 (3.9) | 19 (4.2) | 0 | 0.998 | 1.000 | 0 |
 Daily use, n | 16 | 16 | 0 |  |  |  |
 Electronic device | 34 (7.1) | 33 (7.2) | 1 (4.3) | 0.277 | 1.000 | 2.9 (−0.3–8.9) |
 Daily use, n | 27 | 27 | 0 |  |  |  |
Former users | ||||||
 Time of quitting | n = 79 | n = 75 | n = 4 |  |  |  |
  This month | 4 (5.1) | 4 (5.3) | 0 | 5.040 | 0.197 | 0 |
  A month ago | 13 (16.4) | 11 (14.7) | 2 (50.0) | 15.4 (−7.3–38.1) | ||
  2–5 months ago | 24 (30.4) | 22 (29.3) | 2 (50.0) | 8.3 (−3.6–20.3) | ||
  6–11 months ago | 8 (10.1) | 8 (10.7) | 0 | 0 | ||
  A year or more ago | 30 (38.0) | 30 (40.0) | 0 | 0 | ||
Quit due to health warnings about the association of tobacco use with COVID-19 | ||||||
 No | 58 (73.4) | 57 (76.0) | 1 (25.0) | 5.061 | 0.055 | 1.7 (−1.7–5.2) |
 Yes | 21 (26.6) | 18 (24.0) | 3 (75.0) | 14.3 (−0.2–30.6) | ||
Time of quitting by symptoms | No symptoms | Symptoms | Â | Â | Â | |
|  | n = 79 | n = 52 | n = 27 |  |  | |
 This month | 4 (5.1) | 4 (7.7) | 0 (0.0) | 2.831 | 0.606 | |
 A month ago | 13 (16.4) | 9 (17.3) | 4 (14.8) | |||
 2–5 months ago | 24 (30.4) | 16 (30.8) | 8 (29.6) | |||
 6–11 months ago | 8 (10.1) | 4 (7.7) | 4 (14.8) | |||
 A year or more ago | 30 (38.0) | 19 (36.5) | 11 (40.7) | |||