Fig. 1

Explanation of dashboard coloured areas which show differences from the overall mean. Legend: The black vertical line shows the overall proportion (mean) for all sites. The coloured areas indicate the performance of the site. Grey area corresponds to values between 90%–110% of the overall mean (sites falling in this area are considered to perform as expected). Green area corresponds to values >110% of the overall mean (sites falling in this area are considered to perform better than expected). Orange area corresponds to values between 80%–90% of the overall mean (sites falling in this area are considered to perform worse than expected). Red area corresponds to values <80% of the overall mean (sites falling in this area are considered to perform much worse than expected). The white triangle shows the estimated proportion (score) for the site in question and the blue bar gives the 95% confidence interval for the site’s proportion. In this graph, the estimated score falls within the grey area, so there is no strong evidence of bad performance