Skip to main content

Table 2 Results of backward selection for interrupted time series parameters of Operation Clean Sweep and the Boston Medical Center bridge clinic visit volume. Boston, MA. June–September 2019

From: Effect of police action on low-barrier substance use disorder service utilization

  Baseline OCS level change OCS slope change After OCS level change After OCS slope change
  Estimate Lower 95% Upper 95% P value Estimate Lower 95% Upper 95% P value Estimate Lower 95% Upper 95% P value Estimate Lower 95% Upper 95% P value Estimate Lower 95% Upper 95% P value
Full model −0.021 −0.038 − 0.004 0.016 0.643  − 0.286 1.573 0.171 − 0.100 − 0.197 − 0.002 0.045 1.442 0.502 2.383 0.003 0.141 0.041 0.241 0.007
Segment regression model results (General Internal Medicine clinics
Full model 0.002 − 0.09 0.013 0.697 − 0.066 − 0.701 0.570 0.836 − 0.020 − 0.079 0.040 0.515 0.070 − 0.530 0.670 0.816 0.026 − 0.035 0.087 0.396
Step 1 0.002 − 0.008 0.012 0.738      − 0.024 − 0.064 0.015 0.222 0.095 − 0.463 0.652 0.729 0.031 − 0.006 0.068 0.097
Step 2          − 0.20 − 0.047 0.008 0.166 0.080 − 0.455 0.615 0.765 0.028 − 0.004 0.061 0.088
Step 3          − 0.017 − 0.035 0.002 0.083      0.027 − 0.004 0.059 0.090