Fig. 6

An illustration of the effect modification on the median diagnosis interval in symptom-detected cancers. The length of diagnostic interval in different RHAs was modified by time period in women diagnosed in Alberta, Canada in years 2004–2010. In some regions the median diagnostic interval increased whereas in others it decreased over time. Note that RHAs are grouped differently in Fig. 6 compared to Fig. 4, because different outcomes are illustrated in the two figures. There are different patterns by RHA for the two outcomes