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. 2020 Nov 5;90(4):700–707. doi: 10.1097/TA.0000000000003044

Figure 1.

Figure 1

Comparison of trauma volume before and after shelter-in-place. (A) Long-term ITSA for trauma volume at monthly intervals, showing overall decline in trauma team activations for the past 5 years. Pre–shelter-in-place monthly trend from January 2015–February 2020 of 2.8 fewer activations per month (p < 0.01), a level-shift of 26 fewer activations per month with the start of shelter-in-place (p = 0.01), and a nonsignificant rise from March to June less than expected compared with prior years (p = 0.08). (B) Short-term ITSA for volume at weekly intervals showing flat pre–shelter-in-place weekly trend (coefficient 0.06, p = 0.80), a level-shift of 28 fewer activations per week associated with the start of shelter-in-place (p < 0.01), and a post–shelter-in-place linear increase of 2 activations per week (p < 0.01). Lags specified for autocorrelation: 12 months in A, and 4 weeks in B. See Supplemental Tables 1 and 2 (http://links.lww.com/TA/B859) for complete ITSA model results.