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Table 1 Patient characteristics and unadjusted medical health care utilization of patients with diabetes specified for absence/presence of comorbidity and type of comorbidity (% or mean (standard deviation (SD) (n = 7,499))

From: Comorbidity in patients with diabetes mellitus: impact on medical health care utilization

 

DM only

DM + any comorbidity (n = 3,324)

Type of comorbidity

     

DM + only dm-related comorbidity

DM + only non dm-related comorbidity

DM + both types of comorbidity

 

Number of comorbidities

-

1

2

≥3

    
 

(n = 4,175)

(n = 2,419)

(n = 718)

(n = 187)

(n = 871)

(n = 1,856)

(n = 597)

 
 

%/Mean (SD)

%/Mean (SD)

%/Mean (SD)

%/Mean (SD)

%/Mean (SD)

%/Mean (SD)

%/Mean (SD)

P-value

Percentage of total (%)

55.7

32.3

9.6

2.5

11.6

24.7

8.0

 

Patient characteristics

        

Sex (% male)

48.4

43.7

40.4

41.2

51.2

39.0

42.5

0.000

Mean age (in years)

62.6

66.9

71.1

72.9

71.5

64.9

73.1

0.000

Educational level (%) #

        

   Low

43.2

49.8

55.6

59.4

56.1

47.3

58.3

0.000

   Middle

46.3

42.7

40.8

35.3

37.3

45.4

37.7

 

   High

10.5

7.4

3.6

5.3

6.5

7.3

4.0

 

Mean number of comorbidities

    

1.11

1.13

2.34

0.000

Medical health care utilization

        

GP care

        

% of patients with GP contacts

100

100

100

100

100

100

100

 

Number of contacts with GP (per year)

8.9 (6.5)

13.7 (8.60)

20.8 (12.8)

28.8 (15.9)

15.0 (10.6)

14.3 (9.1)

23.2 (14.0)

0.000

% of patients with prescriptions

97.0

98.5

99.3

98.4

99.4

98.2

99.2

0.000

Number of prescriptions (per year)

18.1(16.8)

25.9 (21.0)

39.8 (31.3)

57.1 (44.2)

32.0 (25.3)

25.6 (23.0)

44.4 (33.9)

0.000

Ambulatory medical specialist care†

        

% of patients with consultations

12.3

23.0

30.4

38.0

17.8

26.5

33.3

0.000

Number of consultations (per year)

2.1 (1.4)

2.7 (1.7)

3.4 (2.0)

4.0 (2.3)

2.7 (1.6)

2.8 (1.8)

3.6 (2.2)

0.000

Hospital care

        

% of patients with hospital admission†

5.1

14.7

23.1

31.0

13.8

16.2

26.5

0.000

Number of hospital admissions (per year)

1.7 (1.3)

2.3 (2.1)

2.9 (2.8)

3.2 (2.3)

2.7 (2.3)

2.3 (2.3)

2.9 (2.5)

0.000

Average length of stay (per admission)

6.7 (10.6)

6.3 (7.7)

8.0 (7.5)

11.2 (11.4)

7.9 (7.8)

5.8 (7.6)

9.5 (9.1)

0.001

Total hospital days (per year)

10.7 (16.3)

14.8 (21.0)

22.4 (26.5)

31.9 (27.3)

21.1 (24.4)

14.2 (22.1)

25.3 (25.6)

0.000

  1. DM: diabetes mellitus; GP: general practitioner. # low: none and primary school; middle: secondary school or lower and intermediate vocational training; high: higher vocational training or university. †= only first referrals are included in the analysis.