CONSANGUINEOUS MARRIAGE IN EUROPE
Region/country	Location/ community	Collection period	Study population	Sample size	Consanguinity(%)	Consanguinity types	Coefficient of inbreeding (a)	Reference	DOI/PMID/URL
East Europe
Czechoslovakia	All Czechoslovakia	1961/64	Obstetric inpatients	19726	0.2	>1C,1C,<1C	-	Stevenson et al. (1966)	https://apps.who.int/iris/handle/10665/263362
Hungary	All-Hungary	1946	Civil registration	98662	0.1	UN,AN,1C	0.0001	Czeilel et al. (1976)	DOI: 10.1159/000152790
	Budapest	1971	Obstetric inpatients	2130	0.5	1C,2C	0.0002	Czeizel et al. (1976)	DOI: 10.1159/000152790
	Pecs and Szombathely	1971	Obstetric inpatients	1061	0.8	1C,2C	0.0003	Czeizel et al. (1976)	DOI: 10.1159/000152790
	Nyiregyhaza	1971	Obstetric inpatients	2038	0.5	1C,2C	0.0002	Czeizel et al. (1976)	DOI: 10.1159/000152790
	All-Hungary	1971	Obstetric inpatients	5229	0.5	1C,2C	0.0002	Czeilel et al. (1976)	DOI: 10.1159/000152790
North Europe
Great Britain	London	1950/51	Paediatric outpatients	5217	0.4	1C	0.0003	Pugh & Carter (unpublished, cited in Coleman 1980)	DOI: 10.1159/000153144
	Reading	1972/73	Household survey	946	0.4	1C,11/2C,2C	0.0002	Coleman (1980)	DOI: 10.1159/000153144
	Birmingham	1986/87	Obstetric Inpatients	2431	0.2	1C,2C	0.0001	Bundey et al. (1990)	DOI: 10.1136/jech.44.2.130
	Bradford	2007/10	Antenatal clinic	4488	0.04	1C,11/2C,2C	0.00003	Bhopal et al. (2014)	DOI: 10.1093/eurpub/ckt166
Ireland, Northern	Londonderry	1954	Household survey	1612	0.9	1C,11/2C,2C	0.0008	Kilpatrick et al. (1955)	PMCID: PMC2480254
	Belfast	1957	Obstetric outpatients	8380	0.4	1C,11/2C,2C	0.0001	Stevenson & Warnock (1959)	DOI: 10.1111/j.1469-1809.1959.tb01481.x
	All-N. Ireland	1959/68	RC dispensation	41528	0.4	UN,D1C,1C, 11/2C,2C	0.0001	Masterson (1970)	DOI: 10.1159/000152333
Ireland, Republic	All-Irish Republic	1959/68	RC dispensation	149029	0.5	UN,D1C,1C, 11/2C,D2C,2C	0.0002	Masterson (1970)	DOI: 10.1159/000152333
Norway	All-Norway	1967/72	Civil registration	401671	0.6	UN,1C,11/2C,2C	0.0002	Saugstad (1977)	DOI: 10.1111/j.1469-1809.1977.tb01865.x
	All-Norway	1967/81	Civil registration	893941	0.7	1C,2C	0.0002	Magnus et al. (1985)	DOI: 10.1111/j.1399-0004.1985.tb00407.x
	All-Norway	1967/93	Civil registration	1431055	0.1	>1C,1C	0.0001	Stoltenberg et al. (1998)	DOI: 10.1093/oxfordjournals.aje.a009670
	All-Norway	1995/10	Civil registration	712430	<0.01	>1C,1C	<0.0001	Sørbye et al. (2014)	DOI: 10.1111/aogs.12303
Sweden	North, Pajala	1947	Parish records	843	0.01	1C	0.0006	Böök (1948)
	All-Sweden	1946/50	Pregnancy termination	15802	0.6	1C,2C	0.0003	Romanus (1953)	DOI: 10.1159/000150749
South Europe
Croatia	Zagreb	1961/4	Obstetric Inpatients	8309	0.1	>1C,1C,<1C	-	Stevenson et al. (1966)	https://apps.who.int/iris/handle/10665/263362
Italy	Florence	1939/58	RC dispensation	50028	1.1	D1C,1C,11/2C,2C	0.0005	Bigozzi et al. (1970)	PMID: 5512528
	All-Italy	-	RC dispensation	-	1.1	1C,2C	0.0005	Romeo et al. (1981)
	All-Italy	1953	Civil registration	340693	0.5	UN,AN,1C,	0.0004	Fraccaro (1957)	DOI: 10.1080/19485565.1957.9987307
	Upper Bologna Appennine	1950/80	RC dispensation	5340	1.6	1C,11/2C,2C	0.0004	Pettener (1985)	PMID: 3888814
Portugal	All-Portugal	1952/5	Civil registration	276800	1.5	UN,1C	0.0009	Freire-Maia (1957)	DOI: 10.1080/19485565.1957.9987319
	Azores Islands	1979/85	RC dispensation	12456	2.9	>1C,1C,11/2C,2C	0.0011	Da Cunha (1986-87)
Slovenia	Ljubljana	1961/4	Obstetric inpatients	8712	0.6	>1C,1C,<1C	-	Stevenson et al. (1966)	https://apps.who.int/iris/handle/10665/263362
Spain	All-Spain	1940/3	RC dispensation	-	4.1	UN,1C,11/2C,2C	0.0014	Pinto-Cisternas et al. (1979)
	Madrid	1961/4	Obstetric inpatients	19365	1.1	>1C,1C,<1C	-	Stevenson et al. (1966)	https://apps.who.int/iris/handle/10665/263362
	Mondonedo	1922/64	RC dispensation	-	2.6	1C,2C	0.0022	Valls (1967)	DOI: 10.1159/000152058
	Leon	1958/68	RC dispensation	16656	2.8	1C,11/2C,2C	0.0007	Gomez Gomez(1989)	DOI: 10.1007/BF02442872
	Majorca	1930/62	RC dispensation	39184	2.5	1C,11/2C,2C	0.001	Valls (1969)	PMID: 5356506
	Menorca	1943/64	RC dispensation	2084	2.9	1C,11/2C,2C	0.001	Valls (1969)	PMID: 5356506
	Ibiza	1941/63	RC dispensation	4042	5.4	1C,11/2C,2C	0.0019	Valls (1969)	PMID: 5356506
	Formentera	1941/63	RC dispensation	498	7.8	1C,11/2C,2C	0.0026	Valls (1969)	PMID: 5356506
	Alava Province, Basque country	1951/80	RC dispensation	38965	1.2	UN,1C,11/2C,2C	0.0003	Calderón et al. (1993)	PMID: 8262504
	Vitoria, Basque country	1951/80	RC dispensation	27265	0.6	UN,1C,11/2C,2C	0.0002	Calderón et al. (1993)	PMID: 8262504
	Alava, Basque country	1951/80	RC dispensation	11700	2.5	UN,1C,11/2C,2C	0.0006	Calderón et al. (1998)	PMID: 9599944
	Sigüenza- Guadalajara	1951/80	RC dispensation	5315	12.6	1C,11/2C,2C	0.0029	Calderón et al. (1998)	PMID: 9599944
	Santiago de Compostela, Galicia	1970/79	RC dispensation	48984	1.5	UN,1C,11/2C	0.0005	Varela et al. (1997)	PMID: 9198311
	Los Nogales, Galicia	1960/71	RC dispensation	156	3.8	1C,2C	0.0015	Fuster (2003)	DOI: 10.1017/s002193200300083x
	La Cabrera, Galicia	1970/89	RC dispensation	325	2.5	1C,2C	0.0007	Blanco Villegas et al. (2004)	DOI: 10.1353/hub.2004.0039
West Europe
Belgium	All-Belgium	1950/59	RC dispensation	605849	1	UN,1C,11/2C,2C	0.0003	Twiesselmann et al. (1962)	DOI: 10.2307/1527067
France	Loire Valley	1944/53	RC dispensation	19861	0.7	1C,11/2C,2C	0.001	Sutter & Tabah(1954)	DOI: 10.2307/1524555
	Brittany	1951/3	RC dispensation	13000	1.2	1C,11/2C,2C	0.0005	Sutter & Tabah (1954)	DOI: 10.2307/1524555
	All-France	1946/58	RC dispensation	510000	0.8	UN,1C,11/2C,2C	0.0002	Sutter & Goux(1964)	DOI: 10.2307/1526249
Netherlands	All-Holland	1948/53	Civil registration	351085	0.2	UN,1C	0.0001	Freire-Maia (1957)	DOI+J2:J68: 10.1080/19485565.1957.9987319