Fig. 4
From: Sequence symmetry analysis graphic adjustment for prescribing trends
Supply lag 101 for frusemide (medicine b) after amlodipine (medicine a) across WTDs. There are nine supply lags with 101 days between each medicine of a pair. Many pairs of first supply days are unique to a patient but others can be the same for two or more patients, such as pairs 2 and 3. (Note: interleaving earlier pairs can be resolved by observing paired numbers)