Table 3.

Comparison of patient characteristics between the EMR and non-EMR cohort practice populations as of August 31, 2007

PATIENT VARIABLE*NON-EMR COHORT (N = 9)EMR COHORT (N = 18)
Patients, N (mean per physician)10 591 (1177)23 514 (1306)
Age, median (IQR)47 (31 to 63)45 (27 to 60)
Men, n (%)4 767 (45.0)10 106 (43.0)
Neighbourhood income quintile,22 n (%)
  • Unknown31 (0.3)51 (0.2)
  • 1 (lowest)1594 (15.1)3084 (13.1)
  • 21438 (13.6)3643 (15.5)
  • 31951 (18.4)4345 (18.5)
  • 42414 (22.8)5 091 (21.7)
  • 5 (highest)3163 (29.9)7300 (31.0)
Recent immigrant,22 n (%)1148 (10.8)1398 (5.9)
Comprehensiveness of care,22,34 mean (SD)0.50 (0.34)0.54 (0.35)
Overall morbidity (resource utilization bands),35,36 mean (SD)2.81 (1.14)2.73 (1.02)
  • 0 (lowest), n (%)657 (6.2)1 047 (4.5)
  • 1, n (%)616 (5.8)1 480 (6.3)
  • 2, n (%)1 720 (16.2)4778 (20.3)
  • 3, n (%)5 344 (50.5)12 567 (53.4)
  • 4, n (%)1 614 (15.2)2783 (11.8)
  • 5 (highest), n (%)640 (6.0)859 (3.7)
Overall comorbidity (adjusted diagnosis groups),35,36 mean (SD)§5.43 (3.48)4.77 (3.04)
  • 0 (lowest level of comorbidity), n (%)657 (6.2)1046 (4.4)
  • 1–4, n (%)3962 (37.4)11 189 (47.6)
  • 5–9, n (%)4615 (43.6)9502 (40.4)
  • ≥ 10 (highest level of comorbidity), n (%)1357 (12.8)1777 (7.6)
Common comorbidities, n (%)
  • Diabetes371041 (9.8)1934 (8.2)
  • CHF40300 (2.8)386 (1.6)
  • Hypertension382823 (26.7)5594 (23.8)
  • MI39193 (1.8)311 (1.3)
  • Asthma411500 (14.2)3143 (13.4)
  • COPD42626 (5.9)1120 (4.8)
  • Mental health issues432391 (22.6)4937 (21.0)
  • CHF—congestive heart failure, COPD—chronic obstructive pulmonary disease, EMR—electronic medical record, IQR—interquartile range, MI—myocardial infarction, SD—standard deviation.

  • * Obtained from administrative databases.

  • Comprehensiveness of care was determined by measuring the percentage of bills for 21 common services that were provided by the patients’ own family physicians.

  • Resource utilization bands indicate morbidity and expected health care system use, from 0 (lowest) to 5 (highest).

  • § Adjusted diagnosis groups indicate comorbidity, from 0 groups (lowest level of comorbidity) to 10 or more groups (highest level).