Table 2.
Parameter Estimates for Segmented Regression Analysis of Daily Emergency Medical Services (EMS) Runs for Opioid Overdose, January 14, 2020 to April 26, 2020.
| Parameter Estimatesa | ||||
|---|---|---|---|---|
| Pre- COVID-19 Intercept |
Pre-COVID-19 Slope | COVID-19 Intercept Changeb | COVID-19 Slope Change |
|
| Case Period: January 14, 2020 – April 26, 2020 | ||||
| EMS OOR-Transport (Change Point Mar 18, 2020) |
21.58 [19.40, 23.76] (P <.001) |
0.01 [−0.05, 0.07] (P = .73) |
0.97 [−2.72, 4.65] (P = .60) |
0.14 [0.01, 0.28] (P = .04) |
| EMS OOR-Refusal (Change Point Mar 20, 2020) |
4.28 [3.20, 5.36] (P <.001) |
0.004 [−0.02, 0.03] (P = .78) |
3.58 [1.76, 5.41] (P <.001) |
0.003 [−0.07, 0.07] (P = .93) |
| Sensitivity Period: January 14, 2019 - April 26, 2019 | ||||
| EMS OOR-Transport (Change Point Mar 18, 2020) |
20.25 [17.63, 22.87] (P < 0.001) |
0.04 [−0.03, 0.11] (P = .26) |
−1.12[ −5.40, 3.16] (P = .60) |
−0.12[ −0.28, 0.04] (P = .14) |
| EMS OOR-Refusal (Change Point Mar 20, 2020) |
3.22 [2.23, 4.20] (P < 0.001) |
0.002 [−0.03, 0.03] (P = .89) |
0.93 [−1.65, 2.58] (P = .27) |
−0.01[ −0.06, 0.05] (P = .76) |
Note: aEstimates [95% CI] and (P-values) are presented from the segmented regression models;
b
Change from the end of the preceding segment.