Total metastatic

N = 2627

<70 years

N = 359

≥70 years

N = 2268

p value

n

%

n

%

n

%

Mean age (95% CI)

77.57

77.3 - 77.8

67.67

67.6 - 67.8

79.14

78.9 - 79.4

<0.0001

Race/ethnicity

White

2032

77.4

255

71.0

1777

78.4

0.0002

Black

460

17.5

90

25.1

370

16.3

Other/unknown

135

5.1

14

3.9

121

5.3

Marital status

Single

219

8.3

48

13.4

171

7.5

<0.0001

Married

946

36.0

162

45.1

784

34.6

Separated/divorced

250

9.5

44

12.3

206

9.1

Widowed

1134

43.2

90

25.1

1044

46.0

Unknown

78

3.0

15

4.2

63

2.8

% of adults with some education

0 - 50

906

34.5

144

40.1

762

33.6

0.0077

51 - 100

1665

63.4

203

56.5

1462

64.5

Unknown

56

2.1

12

3.3

44

1.9

Median income quartiles

1-Low

643

24.5

118

32.9

525

23.1

0.0002

2

644

24.5

85

23.7

559

24.6

3

643

24.5

77

21.4

566

25.0

4-High

641

24.4

67

18.7

574

25.3

Unknown

56

2.1

12

3.3

44

1.9

Geographic region

Midwest

347

13.2

54

15.0

293

12.9

0.0123

Northeast

187

7.1

28

7.8

159

7.0

South

958

36.5

103

28.7

855

37.7

West

1135

43.2

174

48.5

961

42.4

Stage at initial diagnosis

Stage I

678

25.8

68

18.9

610

26.9

<0.0001

Stage II

785

29.9

91

25.3

694

30.6

Stage III

388

14.8

50

13.9

338

14.9

Stage IV

776

29.5

150

41.8

626

27.6

PPI

No

2288

87.1

324

90.3

1964

86.6

0.0550