Table II.

Risk of malignant melanoma (MM) and melanoma in situ (Mis) in mastocytosis patients compared with mastocytosis-free comparators

Item	No (%)	Yes (%)	Total	Diagnosis before index date
MM
Cases	2,001 (98.1)	39 (1.9)	2,040	27
Comparators	10,112 (99.2)	81 (0.8)	10,193	44
OR (95% CI)	2.43 (1.66–3.58)
Mis
Cases	2,016 (98.8)	24 (1.2)	2,040	6
Comparators	10,140 (99.5)	53 (0.5)	10,193	24
OR (95% CI)	2.28 (1.4–3.70)
MM + Mis (total)
Cases	1,977 (96.9)	63 (3.1)	2,040	33
Comparators	10,059 (98.7)	134 (1.3)	10,193	68
OR (95% CI)	2.39 (1.8–3.2)

OR: odds ratio; CI: confidence interval.

No = no MM/Mis. Yes = MM or Mis.