Fig. 1

Initially dose interval groups were formed by binning equivalent doses. The three equivalents consisted of separate dosage intervals, all starting from 0. DDDs were binned in intervals of 0.5 DDD, chlorpromazine equivalents were binned in intervals of 100 mg, and olanzapine equivalents were binned in intervals of 5 mg. The length of the clinical notes was analyzed in each binned dosage interval. Three equally wide dose intervals (low, mid, high) were defined to investigate whether the number of potential adverse events per clinical word was associated with the total normalized dose. Intervals containing less than 10 patients were excluded from all analyses, intervals containing less than 100 patients were only excluded from the analysis comparing the drug dose with the length of clinical notes