Table 1.

Patient characteristics at baseline, derived from the electronic patient record

CharacteristicControl group, na (%)Intervention group na (%)
Sex, male39 (52.7)34 (37.8)
Age, years72.4 (8.2)73.9 (8.0)
Creatinine, μmol/l117.6 (21.2)109.0 (24.9)
eGFR, ml/min/1.73m250.0 (6.7)49.1 (7.9)
Systolic usual office blood pressure, mmHgb142.5(15.1)142.7 (17.6)
Diastolic usual office blood pressure, mmHgb80.4 (8.2)74.9 (9.2)
Diabetes, %2634
Hypertension, %6981
Myocardial infarction, %412
Heart failure, %35
Transient ischaemic attack, %66
Cerebrovascular accident, %610
Peripheral artery disease, %513
  • Comorbidity is based on ICPC (International Classification of Primary Care) coding in the problem list in the electronic patient record.

  • a Values are given as mean and standard deviation, or number (percentage).

  • b In one patient in the control group, a usual blood pressure at baseline could not be found in the electronic patient file. eGFR = estimated glomerular filtration rate. Usual office blood pressure is the blood pressure as noted in the electronic patient record.