Table 4

Comparison of April 2019 and 2020 injury characteristics and patient outcomes

Injury characteristicApril 2019 (n=7398)*April 2020 (n=4997)*2019 to 2020 patient volume absolute change (%)2019 to 2020 proportional change (%)†P value for proportional change‡
ISS, mean (SD)8.3 (7.5)9.0 (7.5)<0.001
 Mild (1 to 8), no. (%)3881 (52.6)2344 (46.9)−39.6−5.6<0.001
 Moderate (9 to 15), no. (%)2573 (34.8)1904 (38.1)−26.03.3<0.001
 Severe (16 to 24), no. (%)531 (7.2)433 (8.7)−18.51.50.002
 Very severe (>24), no. (%)400 (5.4)315 (6.3)−21.20.90.036
GCS, mean (SD)14.3 (2.3)14.2 (2.5)0.009
 Mild (13 to 15), no. (%)6652 (93.8)4474 (92.6)−32.7−1.30.491
 Moderate (9 to 12), No. (%)151 (2.1)122 (2.5)−19.20.40.136
 Severe (3 to 8), no. (%)288 (4.1)238 (4.9)−17.40.90.018
Injury type
 Blunt, no. (%)6692 (90.5)4364 (87.3)−34.8−3.1<0.001
 Penetrating, no. (%)537 (7.3)500 (10)−6.92.7<0.001
 Fall, no. (%)4151 (56.1)2828 (56.6)−31.90.50.594
 MVC, no. (%)1249 (16.9)628 (12.6)−49.7−4.3<0.001
 Firearm, no. (%)204 (2.8)212 (4.2)3.91.5<0.001
 Cut/pierce, no. (%)291 (3.9)259 (5.2)−11.01.2<0.001
MVC ISS, mean (SD)10.0 (9.5)11.1 (9.6)0.003
Hospital LOS, mean (SD), d5.1 (8.2)4.5 (5.1)<0.001
Deaths, no. (%)207 (2.8)181 (3.6)−12.60.80.010
Discharge disposition
 Home, no. (%)4475 (68.1)2970 (69.1)−33.61.00.24
 Skilled nursing facility, no. (%)2051 (31.2)1301 (30.3)−36.6−1.00.038
 Transfer, no. (%)42 (0.6)25 (0.6)−40.5−0.10.616
  • *Categorical data may not equal the total number of patients due to missing demographic information.

  • †Proportional change and absolute change calculated only for categorical variables.

  • ‡P value test used: Kruskal-Wallis H test for continuous variables, Pearson’s χ2 test for category proportion comparisons.

  • GCS, Glasgow Coma Score; ICU, intensive care unit; ISS, injury severity score; LOS, length of stay; MVC, motor vehicle collision.