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Table 2 Comparison of EMRALD study cohort patients, rostered patients in Ontario and all residents of Ontario as of March 31, 2012

From: Are family physicians comprehensively using electronic medical records such that the data can be used for secondary purposes? A Canadian perspective

 

Study cohort

Rostered Ontario patients

All Ontario residents

Number of people

185734a

10,230,063

14,005,291

Sex

   

 Male

46.2 %

47.5 %

49.1 %

 Female

53.8 %

52.5 %

50.9 %

Age Groups

   

 0-17

18.9 %

18.2 %

20.6 %

 18-29

14.2 %

15.1 %

16.2 %

 30-44

19.8 %

20.3 %

20.9 %

 45-64

30.0 %

30.2 %

28.0 %

 65-84

14.6 %

14.1 %

12.4 %

 85+

2.4 %

2.1 %

1.9 %

 Unknown

0.2 %

0.0 %

0.0 %

Mean age

41.3 years

41.2 years

39.1 years

Neighborhood Income Quintile

   

 1 - Lowest Income

15.7 %

17.7 %

18.8 %

 2

17.8 %

19.2 %

19.1 %

 3

19.2 %

20.2 %

19.6 %

 4

21.6 %

21.7 %

20.7 %

 5 - Highest Income

24.8 %

20.7 %

19.8 %

 Unknown

0.8 %

0.4 %

2.0 %

Rurality

   

 Rural

27.3 %

11.6 %

11.0 %

 Urban

72.3 %

88.3 %

87.3 %

 Unknown

0.5 %

0.1 %

1.7 %

Number of Adjusted Clinical Groups [ACGs]b

   

 0

6.3 %

6.2 %

9.4 %

 1

47.4 %

41.8 %

41.1 %

 2

37.2 %

40.6 %

36.2 %

 3

7.9 %

10.0 %

8.8 %

 Unknown

1.1 %

1.4 %

4.6 %

Chronic Conditionsb

   

 Any chronic condition

52.8 %

55.9 %

50.8 %

 Previous Acute Myocardial Infarction

1.9 %

1.7 %

1.5 %

 Asthma

12.9 %

14.0 %

12.9 %

 Congestive Heart Failure

2.3 %

2.2 %

2.0 %

 Chronic Obstructive Pulmonary Disease

7.9 %

8.1 %

7.2 %

 Diabetes

10.2 %

12.4 %

11.0 %

 Hypertension

26.2 %

28.5 %

25.2 %

 Mental health issue

20.8 %

22.8 %

20.9 %

  1. Note: Percentages may not add to 100 due to rounding
  2. aSome study cohort patients could not be linked to the administrative databases due to changing health card numbers
  3. bNumber of ACGs and chronic conditions calculated using ICES validated administrative data algorithms only for people over 18 years of age; chronic conditions are not mutually exclusive