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Table 1 Parameters estimate of the controlled interrupted time series model. Taranto. Years 2009-2016. The interruption is assumed as starting on the 1st November 2012

From: Environmental assessment of interventions to restrain the impact of industrial pollution using a quasi-experimental design: limitations of the interventions and recommendations for public health policy

Parameter Estimate 95% Confidence interval P-value
β0 Baseline PM10 concentrations in the control series 24.1 22.6 25.7 <.0001
β1 Pre-intervention slope of PM10 concentrations in the control series 0.0 0.0 0.1 0.4575
β2 Post-intervention changes in level in the control series -2.3 -4.9 0.3 0.0667
β3 Post-intervention slope in the control series -0.1 -0.2 0.0 0.2004
β4 Baseline difference in PM10 concentrations level between the two time-series 8.2 5.6 10.8 <0,0001
β5 Pre-intervention difference in slopes between the two time-series 0.1 -0.1 0.2 0.1863
β6 Post-intervention difference in PM10 concentrations level between the two time-series -6.1 -11.2 -1.0 0.0097
β7 Post-intervention difference in slopes between the two time-series -0.1 -0.2 0.1 0.5768