Fig. 5
From: Sequence symmetry analysis graphic adjustment for prescribing trends
a: Effect as a proportion of cause due to prescribing trends. On average, 1.816 times more patients started frusemide than started amlodipine. b: Effect as a normalised proportion of cause due to prescribing trends. Dividing by the average (1.816) excludes the frequency difference but retains the proportional difference in shape over the WTD period