Table 3.

Number of person years, incident cases, age-standardised incidence rates (per million person-years) and sex ratio of age-standardised incidence rates of Merkel cell carcinoma in several countries, 2003–2007.

Country	Population coverage (2005)	Men				Women				Sex ratiob
	%	Person years	Casesa	Rates	SE	Person years	Casesa	Rates	SE	IRR	95% CI	Precision
Australia	99.7	50,178,523	471	5.2	0.3	50,922,401	264	2.2	0.2	2.3	2.0; 2.7	0.72
Canada	100.0	61,025,391	149	1.3	0.1	62,078,324	134	0.9	0.1	1.5	1.1; 1.9	0.60
Costa Rica	100.0	10,822,379	11	1.1	0.3	10,492,838	12	1.2	0.4	0.9	0.4; 2.1	0.18
Czech Rep	100.0	24,992,499	34	0.8	0.2	26,239,502	60	0.9	0.1	1.0	0.6; 1.6	0.38
Denmark	100.0	13,411,122	26	1.0	0.2	13,689,087	41	0.9	0.2	1.1	0.6; 1.8	0.34
Finland	100.0	12,841,925	39	1.6	0.3	13,400,373	66	1.5	0.2	1.1	0.7; 1.7	0.41
France	11.3	16,864,758	25	0.8	0.2	17,736,506	26	0.5	0.1	1.5	0.8; 2.8	0.29
Germany	21.0	41,762,638	148	1.7	0.1	43,571,461	208	1.6	0.1	1.0	0.8; 1.3	0.63
Ireland	100.0	10,339,700	28	1.8	0.3	10,392,200	52	2.1	0.3	0.8	0.5; 1.3	0.38
Israel	100.0	16,429,900	57	2.8	0.4	16,754,200	54	1.9	0.3	1.4	1.0; 2.2	0.44
Italy	25.9	32,073,404	117	1.7	0.2	34,005,849	120	1.3	0.1	1.3	1.0; 1.8	0.55
Japan	12.1	37,269,211	21	0.2	0.0	39,363,569	33	0.3	0.1	0.7	0.4; 1.3	0.31
Netherlands	100.0	40,341,583	164	2.3	0.2	41,213,162	221	2.1	0.2	1.1	0.9; 1.3	0.65
New Zealandc	99.6	7,958,330	74	4.5	0.6	8,271,640	79	3.2	0.4	1.4	1.0; 2.0	0.49
Norway	100.0	11,488,658	27	1.1	0.2	11,660,966	45	1.1	0.2	1.0	0.6; 1.8	0.34
Slovakia	100.0	13,076,116	15	0.9	0.2	13,861,643	33	1.2	0.2	0.7	0.4; 1.3	0.29
Spain	24.7	25,795,259	65	1.1	0.1	26,254,868	56	0.8	0.1	1.4	0.9; 2.1	0.45
Sweden	100.0	22,418,578	69	1.1	0.2	22,791,398	91	1.1	0.1	1.0	0.7; 1.5	0.49
Switzerland	58.3	10,523,625	37	1.7	0.3	11,075,973	51	1.6	0.3	1.1	0.7; 1.7	0.39
UK	86.7	123,217,138	359	1.3	0.1	127,987,771	497	1.3	0.1	1.1	0.9; 1.2	0.74
USA Whited	94.4	546,817,586	4198	4.2	0.1	557,624,219	2552	1.9	0.0	2.2	2.1; 2.4	0.90
USA Blackd	94.4	87,406,801	46	0.5	0.1	95,996,619	66	0.5	0.1	1.0	0.7; 1.5	0.46
USA Asian & Pacific Islanderd	94.4	29,202,382	21	0.7	0.1	31,046,100	29	0.7	0.1	0.9	0.5; 1.6	0.32
USA American Indiand	94.4	7,192,643	11	1.7	0.5	7,193,208	11	1.4	0.4	1.2	0.5; 2.9	0.18

^aNarrow or broad topography definition.

^bRatio of the unrounded age-standardised incidence rates (male/female), precision: the inverse of the confidence limit ratio, that is, the ratio of the upper over the lower confidence limit; higher values indicate higher precision.

^cOnly data for other populations than Maori and Pacific Islanders are presented as Maori and Pacific Islanders provided only 3 male and 2 female cases respectively.

^dIncludes 42 cancer registries of NPCR, Connecticut, New Mexico, Hawaii, Iowa, Utah and Louisiana.