Table 1 Characteristics of CRC patients and a population-based comparison cohort matched by gender, age, year of diagnosis, and comorbidity, Denmark 1995–2010

From: Does comorbidity interact with colorectal cancer to increase mortality? A nationwide population-based cohort study

 

CRC cohort

Population-based comparison cohort a

 

Number

%

Number

%

Sex

Female

27 665

49

132 537

49

Male

29 298

51

139 133

51

Age at diagnosis/index (years)

0–59

10 285

18

51 467

19

60–69

14 541

26

70 613

26

70–79

18 547

33

87 444

32

80+

13 590

24

62 146

23

Year of diagnosis/index date

1995–1999

16 230

29

78 136

29

2000–2004

17 359

31

83 088

31

2005–2010

23 374

41

110 446

41

Stage of CRC

Non-metastatic

37 381

66

NA

Metastatic

12 687

22

NA

Unknown

6895

12

NA

Cancer location

Colon

37 859

67

NA

Rectal

19 014

33

NA

Colon and rectal

90

0.2

NA

Comorbidities included in the CCI

Myocardial infarction

3270

5.7

13 825

5.1

Congestive heart failure

2783

4.9

10 652

3.9

Peripheral vascular disease

2322

4.1

9299

3.4

Cerebrovascular disease

5014

8.8

21 852

8.0

Dementia

594

1.0

2297

0.8

Chronic pulmonary disease

4009

7.0

17 061

6.3

Connective tissue disease

1567

2.8

6293

2.3

Ulcer disease

3026

5.3

12 711

4.7

Mild liver disease

478

0.8

1670

0.6

Diabetes type I and II

3007

5.3

11 945

4.4

Haemiplegia

100

0.2

252

0.1

Moderate to severe renal disease

811

1.4

2557

0.9

Diabetes with end-organ failure

1384

2.4

4901

1.8

Any tumour (excluding CRC)

5037

8.8

22 517

8.3

Leukemia

158

0.3

494

0.2

Lymphoma

295

0.5

1010

0.4

Moderate to severe liver disease

113

0.2

311

0.1

Metastatic solid tumour

519

0.9

1944

0.7

AIDS

10

0.0

25

0.0

Diseases not originally included in the CCI

Atrial fibrillation/flutter

1164

2.0

4213

1.6

Obesity

1197

2.1

4320

1.6

CCI scores b

0 (No comorbidity)

34 918

61

172 041

63

1 (Low comorbidity)

9747

17

47 139

17

2–3 (Moderate comorbidity)

9522

17

44 788

17

4+ (High comorbidity)

2776

4.9

7702

2.8

  1. Abbreviations: CCI=Charlson Comorbidity Index; CRC=colorectal cancer; NA=not applicable.
  2. aMatched on age, gender, year of CRC diagnosis, and the presence of individual comorbidities listed in this table.
  3. bThe CCI included the 19 diseases from the original index with the addition of atrial fibrillation/flutter and obesity (both assigned one point).