Fig. 3From: Detecting change in comparison to peers in NHS prescribing data: a novel application of cumulative sum methodologyPractice examples. Graphs showing the measures for practices as shown on openprescribing.net (i), percentiles with alerts highlighted (ii) and the cumulative sum, with threshold values (iii). Examples are: a Cerazette vs. desogestrel in N85051, b glaucoma eye drops prescribed by brand in J83041, c high-cost statins in N82073, d non-preferred NSAIDs and COX-2 inhibitors (KTT13) in Y02735. Increase alerts all lie above the reference percentile line, while decrease alerts all lie below itBack to article page