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. Author manuscript; available in PMC: 2024 Nov 1.
Published in final edited form as: Spat Spatiotemporal Epidemiol. 2023 Jul 26;47:100602. doi: 10.1016/j.sste.2023.100602

Table 2.

Interrupted Time Series Models of Firearm Assault Injuries

Firearm Assault Injuries
Rate per 100,000
AR(1) TSR AR(1) TSR RE HLM RE HLM RE HLM +Int.
(1) (2) (3) (4) (5)
T 0.001 −0.001 0.003 0.002 0.001
(−0.0003|0.002) (−0.003|0.001) (0.0004|0.005) (−0.0005|0.004) (−0.002|0.004)
COVID - State of Emergency −0.463 −0.411 −0.646 −0.506 −0.439
(−1.026|0.100) (−0.995|0.173) (−2.001|0.708) (−1.864|0.853) (−1.917|1.040)
COVID - Stay at Home 0.403 0.416 0.242 0.156 0.189
(−0.179|0.984) (−0.183|1.016) (−1.151|1.636) (−1.240|1.553) (−1.331|1.709)
Post-Killing 1.781 1.775 1.330 1.277 0.282
(1.176|2.387) (1.137|2.414) (−0.092|2.751) (−0.149|2.703) (−1.375|1.938)
T Post-Killing −0.048 −0.047 −0.035 −0.032 −0.036
(−0.068|−0.028) (−0.070|−0.025) (−0.081|0.011) (−0.078|0.015) (−0.086|0.015)
MPD Use of Force t-1 −0.015 −0.130 −0.123
(−1.400|1.370) (−0.184|−0.077) (−0.175|−0.070)
MPD Stops t-1 −0.121 0.035 0.076
(−0.365|0.122) (0.019|0.051) (0.055|0.098)
MPD OIS t-1 −27.382 −1.953 −1.668
(−67.727|12.964) (−12.946|9.040) (−13.095|9.759)
AR(1) 0.142 0.065
(0.021|0.263) (−0.071|0.201)
Median HH Income 0.00001
(−0.00001|0.00002)
Percent Black 0.038
(0.014|0.062)
Post-Killing X Percent Black 0.063
(0.032|0.094)
Constant 0.579 0.931 0.800 0.834 −0.412
(−0.194|1.352) (−0.204|2.066) (−1.093|2.694) (−1.073|2.740) (−2.785|1.961)
SD(ZCTA) 0.904 0.922 0.504
SD(Residual) 5.352 5.364 5.577
Observations 260 217 5,993 5,928 5,460
R2 0.385 0.407
Log Likelihood −18,592.500 −18,406.520 −17,172.070
Akaike Inf. Crit. 37,210.990 36,845.050 34,382.150
Bayesian Inf. Crit. 37,298.070 36,952.040 34,507.650
Residual Std. Error 0.463 (df = 248) 0.474 (df = 202)
F Statistic 14.117*** (df = 11; 248) 9.898*** (df = 14; 202)
Models include controls for seasonality. 95% Confidence Intervals in parentheses