Table 1.

Summary of study population.

	MPN cases	Controls
Country
Hungary	43	75
Italy	45	182
Poland	212	132
Spain	180	520
Total	480	909
Sex
Male	43.54%	49.72%
Female	56.46%	50.28%
Median age (25th–75th percentile)	56.46 (45.0–68.5)	52.68 (46.0–60.0)
Disease subtype
CML	149
ET	173
MF	36
PV	122