Table 4.

Number of cases and mean age at diagnosis of thalassemia in patients with a sibling history of thalassemia by parental birth country, 1987–2010.

Parental birth country	By father’s birth country		By mother’s birth country
	No.	Mean age (years)	No.	Mean age (years)
Sweden	30	8.4	42	13.1
Denmark	2	4.0	0
Finland	2	10.0	0
Greece	7	24.7	4	23.3
Italy	2	2.5	2	10.0
England–Ireland	2	7.5	0
Austria	0		2	34.5
Yugoslavia	7	4.3	6	12.7
Romania	2	8.0	2	8.0
Bulgaria	0		2	12.0
Other Eastern countries	2	28.5	0
Poland	0		2	10.5
Africa	14	9.4	12	9.3
Turkey	16	11.3	16	11.6
Lebanon	54	8.4	54	8.8
Iran	32	12.2	29	12.2
Iraq	125	9.6	121	9.2
Other Asia countries	50	12.5	69	10.9
All	347	10.2	363	10.7