Table 1 Descriptive analysis of characteristics and medians of 25-hydroxyvitamin D3 levels at time of diagnosis in melanoma patients

Clinical characteristic*

Age at diagnosis of melanoma (years)

<55

40

22.5(16.8- 33.4)

0.441

≥55

41

19.7(16.4- 24)

Gender

Male

43

19.5(13.8- 26)

0.477

Female

38

22.8(17.8- 32.6)

BMI (kg/m²)

Normal weight

24

22.9(19.2- 31.6)

0.063

Overweight

24

19.6(15.3- 26.3)

Obese

15

15.7(11.4- 25.4)

Fitzpatrick skin type

Dark

37

22.9(19.4- 32.6)

0.005

Fair

44

18(15.5- 24.4)

Hair color

Dark

53

21.6(16.8- 26.6)

0.912

Light

23

22.4(16.4- 30.6)

Eye color

Dark

38

20.5(13.2- 26.2)

0.777

Light

37

22.2(17.3- 32.5)

Actinic damage

No

62

22(16.6- 29.3)

0.161

Yes

16

18.5(16.3- 32.6)

Nevus Number

<50

34

21.2(13.7- 29.9)

0.266

51-99

17

20.2 (17.8- 24.3)

>100

12

26.05 (19–36.6)

Habits of solar exposure and photoprotection

Solar exposure before 10 years old

None/Mild

19

16.8(12–27.4)

0.019

Severe/Moderate

59

22.5(17.3- 30.6)

Solar exposure 10–18 years old

None/Mild

20

17.8(14.5- 22.5)

0.08

Severe/Moderate

57

22.9(17.3- 32.6)

Solar exposure over 18 years old

None/Mild

11

17.7(16.4- 23.9)

0.267

Severe/Moderate

29

22.6(16.8- 30.2)

Photoprotection before 10 years old

Usually

25

22.6(17.3- 27.4)

0.569

Never

47

20.8(15.7- 31.1)

Photoprotection 10–18 years old

Usually

16

22.6(17.4- 27)

0.672

Never

33

21.8(16.6- 32.5)

Photoprotection over 18 years old

Usually

35

19.7(16.8- 27.4)

0.824

Never

36

21.7(16–31.8)

Melanoma characteristic*

Number of Melanoma

SPM

62

20.5(16.4- 27.4)

0.992

MPM

19

21.6(16.8- 31.1)

Breslow thickness

<= 0.75

31

19(13.8- 29.3)

0.544

0.75-1

15

22.2(17.8- 26)

> = 1

22

23.1(16.6- 31.1)