Table 2

Result of difference-in-differences analysis showing the change in CVD emergency admissions per 100 000 population in Knowsley following the intervention relative to the control group, 2005–2015

CoefficientLower 95% CIUpper 95% CIP value
Treatment (Knowsley=1; control=0)24.51−35.5684.580.423
Period (post-intervention=1; pre-intervention=0)−59.92−96.19−23.640.001
DiD estimator (treatment*period)−65.56−108.98−22.130.003
  • Model based on equation shown in online supplementary file and includes random intercept for LSOA, and fixed effects for percent of population aged 50+ years, percent female, percent unemployed and two spline terms for time (full model results are given in online supplementary file).

  • Model based on 98 Knowsley and 490 control LSOAs, and 6468 observations.

  • CVD, cardiovascular disease; DiD, difference-in-differences; LSOA, lower-layer super output area.