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Table 1 Descriptive features of the cohort of persons with a first primary cutaneous malignant melanoma (CMM) or squamous cell carcinoma (SCC) at time of the primary skin cancer diagnosis

From: New malignancies after squamous cell carcinoma and melanomas: a population-based study from Norway

 

CMM

SCC

 

Women

%

Men

%

Women

%

Men

%

Age at 1 st diagnosis

        

20-40

3249

21.5

1943

15.0

248

2.3

270

2.0

40-59

5435

35.9

4908

38.0

1201

11.0

1492

10.9

≥ 60

6452

42.6

6082

47.0

9474

86.7

11 935

87.1

Age (median)

55.6

 

57.4

 

75.4

 

73.2

 

Anatomical site

        

Head/neck

2148

14.2

2025

15.7

6560

60.0

8809

64.3

Trunk

4353

28.8

7044

54.4

1659

15.2

2071

15.1

Arm

2346

15.5

1188

9.2

1103

10.1

1281

9.4

Leg/foot

5633

37.2

1786

13.8

1060

9.7

737

5.4

Other sites

656

4.3

890

6.9

541

5.0

799

5.8

Residential region

        

South

10 875

71.9

9270

71.7

7878

72.1

9537

69.6

Mid

2998

19.8

2525

19.5

2235

20.5

2877

21.0

North

1263

8.3

1138

8.8

810

7.4

1283

9.4

Educational level

        

≤ Primary school

496

3.3

617

4.8

420

3.8

653

4.8

Secondary school

5199

34.4

3446

26.6

5678

52.0

5847

42.7

Some college

4545

30.0

3271

25.3

3106

28.4

3359

24.5

≥ College degree

4896

32.3

5599

43.3

1719

15.8

3830

28.0

Marital status

        

Not married

6270

41.4

3515

27.2

6981

63.9

4641

33.9

Married

8866

58.6

9418

72.8

3942

36.1

9056

66.1

Parental status

        

No children

3875

25.6

2989

23.1

3855

35.3

4226

30.9

Children

11 261

74.4

9944

76.9

7068

64.7

9471

69.1

Annual income

        

No or missing

6467

42.7

4118

31.8

8930

81.7

9523

69.5

$ 1-9999

2573

17.0

1639

12.7

801

7.3

1609

11.8

$ 10 000–19 999

1712

11.3

1283

9.9

320

3.0

567

4.1

$ 20 000–39 999

2326

15.4

2166

16.8

462

4.2

782

5.7

$ ≥ 40 000

2058

13.6

3727

28.8

410

3.8

1216

8.9

Duration of follow-up (years)

       

0.0-2.0

2551

16.9

3050

23.6

2642

24.2

3491

25.5

2.1-5.0

2938

19.4

3235

25.0

3019

27.6

3875

28.3

5.1-10.0

3044

20.1

2610

20.2

2658

24.3

3427

25.0

10.1-15.0

2261

14.9

1577

12.2

1398

12.8

1655

12.1

15.1-20.0

1720

11.4

1088

8.4

648

6.0

690

5.0

20.1-25.0

1109

7.3

615

4.8

289

2.6

313

2.3

≥ 25.1

1513

10.0

758

5.8

269

2.5

246

1.8

Total number

15 136

100

12 933

100

10 923

100

13 697

100

No subsequent cancer

13 078

86.4

10 995

85.0

9030

82.7

9978

72.9

Any subsequent cancer

2058

13.6

1938

15.0

1893

17.3

3719

27.1