Table 2.
Comparison of the TBI sample characteristics before and after the COVID-19 pandemic.
| Variable | Pre-Pandemic Period Corresponding to P1 (n = 4092) |
P1 (n = 3277) |
p | Pre-Pandemic Period Corresponding to P2 (n = 3088) |
P2 (n = 1474) |
p | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | |||
| Sex | 0.403 | 0.117 | ||||||||
| Female | 1808 | 44.18 | 1416 | 43.21 | 1417 | 45.89 | 640 | 43.42 | ||
| Male | 2284 | 55.82 | 1861 | 56.79 | 1671 | 54.11 | 834 | 56.58 | ||
| Age (years), median (IQR) | 42 | (19–66) | 44 | (22–68) | <0.001 | 42 | (19–66) | 54 | (29–73) | <0.0001 |
| Age (years) | 0.001 | <0.0001 | ||||||||
| 0–14 | 812 | 19.84 | 537 | 16.39 | 620 | 20.08 | 188 | 12.75 | ||
| 15–24 | 522 | 12.76 | 397 | 12.11 | 409 | 13.24 | 128 | 8.68 | ||
| 25–44 | 833 | 20.36 | 728 | 22.22 | 598 | 19.37 | 274 | 18.59 | ||
| 45–64 | 857 | 20.94 | 683 | 20.84 | 632 | 20.47 | 347 | 23.54 | ||
| 65+ | 1068 | 26.10 | 932 | 28.44 | 829 | 26.85 | 537 | 36.43 | ||
| Triage | <0.001 | <0.0001 | ||||||||
| Critical (Levels I and II) | 488 | 11.93 | 446 | 13.61 | 365 | 11.82 | 333 | 22.59 | ||
| Urgent (Level III) | 3479 | 85.02 | 2772 | 84.59 | 2619 | 84.81 | 1120 | 75.98 | ||
| Less urgent (Levels IV and V) | 125 | 3.05 | 59 | 1.80 | 104 | 3.37 | 21 | 1.42 | ||
IQR, interquartile range. TBI, traumatic brain injury; COVID-19, coronavirus disease 2019; P1, January to 30 April 2019; P2, 11 May to 31 July 2021. Pre-pandemic period refers to the same span from 2019.