Table 1 Patient and hospital characteristics of colorectal cancer patients, by treatment choice (untreated vs. treated)

Total colon cancer patients

41,340

3,612

8.74

37,728

91.26

Sex

0.893

  Female

17,862

1,565

8.76

16,297

91.24

  Male

23,478

2,047

8.72

21,431

91.28

Age at diagnosis, years

<0.001*

  ≤44

3,113

209

6.71

2,904

93.29

  45–54

6,298

426

6.76

5,872

93.24

  55–64

8,584

539

6.28

8,045

93.72

  65–74

11,219

843

7.51

10,376

92.49

  ≥75

11,991

1,572

13.11

10,419

86.89

Age at diagnosis, years (M ± SD)

41,340

69.52

14.47

64.92

13.58

<0.001*

Urbanization level of residence location

0.012*

  Level 1 (highest)

12,201

1,015

8.32

11,186

91.68

  Level 2

11,812

1,031

8.73

10,781

91.27

  Level 3

6,211

529

8.52

5,682

91.48

  Level 4

6,133

544

8.87

5,589

91.13

  Level 5

1,230

115

9.35

1,115

90.65

  Level 6

1,876

207

11.03

1,669

88.97

  Level 7 (lowest)

1,738

148

8.52

1,590

91.48

Aboriginal status

0.501

  No

41,115

3,589

8.73

37,526

91.27

  Yes

225

23

10.22

202

89.78

Insured monthly salary, NTD

<0.001

  ≤17,280

8,551

850

9.94

7,701

90.06

  Insured dependent

12,728

1,218

9.57

11,510

90.43

  17,281–22,800

13,153

1,134

8.62

12,019

91.38

  ≥22,801

6,769

386

5.70

6,383

94.30

Low-income household status

0.008*

  No

30,766

2,508

8.15

28,258

91.85

  Yes

363

44

12.12

319

87.88

Other catastrophic illnesses or injuries

<0.001*

  No

39,814

3,366

8.45

36,448

91.55

  Yes

1,526

246

16.12

1,280

83.88

Cancer stage

<0.001*

  Stage 0

1,559

127

8.15

1,432

91.85

  Stage I

6,478

195

3.01

6,283

96.99

  Stage II

9,078

204

2.25

8,874

97.75

  Stage III

12,254

313

2.55

11,941

97.45

  Stage IV

9,131

1,185

12.98

7,946

87.02

  Other/Unknown

2,840

1,588

55.92

1,252

44.08

Post-diagnosis survival in deceased patients, years (M ± SD)

<0.001*

  Stage 0

1,559

1.57

1.81

1.97

1.47

  Stage I

6,478

1.61

1.46

2.32

1.64

  Stage II

9,078

1.19

1.28

2.08

1.51

  Stage III

12,254

1.62

1.31

2.00

1.39

  Stage IV

9,131

0.53

0.77

1.23

1.01

Level of diagnosing hospital

<0.001*

  Medical center

56,511

1,649

6.22

24,862

93.78

  Regional hospital

12,024

1,431

11.90

10,593

88.10

  District hospital

1,464

280

19.13

1,184

80.87

Ownership type of diagnosing hospital

  Public

12,169

1,057

8.69

11,112

91.31

0.416

  Private

28,325

2,389

8.43

25,936

91.57