Table 1.

Demographic and Clinical Characteristics in 1,042 Patients With Melanoma

Characteristic	Data Set (N = 1,042)
Age at blood draw, years
Median	54.8
Interquartile range	44.2-66.0
No. (%) female	452 (43.4)
Tumor thickness, mm
Median	1.2
Interquartile range	0.7-2.4
No./No. evaluated (%) with ulceration	176/840 (21.0)
No./No. evaluated (%) with ≥ 1 mitosis per mm2	455/654 (69.6)
No. (%) with SLN biopsy performed	695 (66.7)
No./No. with biopsy performed (%) with positive SLN	135/695 (19.4)
No. (%) with stage III/IV at blood draw,	349 (33.5)
No. (%) by spring/summer season	515 (49.4)
Time from diagnosis to blood draw, years
Median	0.6
Interquartile range	0.1-2.4
Storage time from blood draw to Vitamin D testing, years
Median	5.1
Interquartile range	3.7-6.7
Vitamin D level, ng/mL
Median	25.0
Interquartile range	20.1-30.6
No. (%) with vitamin D < 20 ng/mL	256 (24.6)
No. (%) with vitamin D ≥ 20 and < 30 ng/mL	497 (47.7)
No. (%) with vitamin D ≥ 30 ng/mL	289 (27.7)
CRP, mg/L
Median	1.7
Interquartile range	0.7-4.4
Follow-up time from blood draw to disease relapse or censoring, years
Median	7.2
Interquartile range	4.4-9.1
Follow-up time from blood draw to death or censoring, years
Median	7.1
Interquartile range	3.8-9.0
No./No. evaluated (%) with recurrence among all patients	148/881(16.8)
No./No. evaluated (%) with recurrence among patients with stage I/II disease	71/692 (10.3)
No. (%) of deaths	294 (28.2)
No. (%) of deaths as a result of melanoma	191 (18.3)

Abbreviations: CRP, C-reactive protein; SLN, sentinel lymph node.