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Table 1 Summary statistics for hypertension case/control dataset

From: Monitoring prescribing patterns using regression and electronic health records

  Cases Controls
Number of patients 46,722 76,391
Mean number of visits per patient (sd) 12.4 (13.5) 5.3 (6.5)
Number of unique conditions recorded per patient in all visits (sd) 30.3 (21.0) 13.4 (12.7)
Number of unique medications recorded per patient in all visits (sd) 17.7 (14.9) 10.4 (9.9)
Number of unique conditions recorded per patient for selected visit (sd) 13.1 (7.8) 4.9 (4.0)
Number of unique medications recorded per patient for select visit (sd) 5.9 (4.8) 3.8 (3.6)