scholarly journals PREVALENCE OF CONSANGUINEOUS MARRIAGES IN SOUTH SINAI, EGYPT

2012 ◽  
Vol 45 (1) ◽  
pp. 31-39 ◽  
Author(s):  
G. YAMAMAH ◽  
E. ABDEL-RAOUF ◽  
A. TALAAT ◽  
A. SAAD-HUSSEIN ◽  
H. HAMAMY ◽  
...  
Keyword(s):  
Urban Population ◽  
Married Couples ◽  
Consanguineous Marriage ◽  
Inbreeding Coefficient ◽  
Consanguineous Marriages ◽  
Significant Difference ◽  
South Sinai ◽  
The Mean ◽  
Mixed Populations ◽  
El Tor

SummaryA total of 3961 married couples from six major geographical areas representing the South Sinai governorates in Egypt were studied to assess the rate of consanguineous marriage. The population of six selected areas (St Catherines, Nuweiba, Abu Rudeis, Ras Sudr, El Tor and Abu Zenima) were subdivided into Bedouin, urban and mixed populations. A questionnaire-based interview was conducted showing that the consanguinity rate in this region is 37.5%, with the highest rate recorded in Abu Rudeis (52.3%) and lowest rate in Nuweiba (24.1%). Consanguinity was significantly higher among the Bedouin population compared with the urban population in Abu Rudeis, Ras Sudr, El Tor and Abu Zenima, while in St Catherines and Nuweiba there was no statistically significant difference. Among consanguineous couples, 5%, 60% and 35% were double first cousins, first cousins and second cousins respectively. The mean inbreeding coefficient α of the studied population was 0.01845.

Double suicide in modern Japan (in Kanagawa prefecture): Comparison with those in post-war Japan and other countries

2018 ◽  
Vol 58 (2) ◽  
pp. 97-101
Author(s):  
Fumiko Satoh ◽  
Motoki Osawa
Keyword(s):  
Elderly Woman ◽  
Japanese Society ◽  
Married Couples ◽  
Significant Difference ◽  
Classical Studies ◽  
Double Suicide ◽  
Kanagawa Prefecture ◽  
The Mean ◽  
Partner Relationships ◽  
Post War

Double-suicide cases have long been common in Japan, particularly among lovers. Classical studies conducted in the 1950s are well known. According to a report by Ohara, the double-suicide rate in Japan was recorded as 3.1% in 1954. Nevertheless, recent tendencies have not been reported. To assess the latest trends of double suicide, extensive studies were conducted in a populous area of Kanagawa, Japan, during 1999–2011. Suicides during the period in the domestic area claimed 23,195 victims. In all, 82 cases of double suicide were extracted, with 170 victims, meaning that double suicides occurred with incidence of 0.73% among all suicides. The mean age and standard deviation were 51.6±16.1 years, with 83 men and 87 women. The suicide-partner relationships included 40 cases (48.8%) of married couples, 13 (15.9%) of unmarried lovers, and 10 (12.2%) of elderly woman and her son/daughter dyads. No significant difference was found from Western countries in the incidence of double-suicide cases in Japan, except for a higher incidence of suicide involving elderly people and their sons/daughters. The traditional style of double suicide by lovers has become less frequent in modern Japanese society, presumably because of changing marriage styles and values.

PREVALENCE OF CONSANGUINEOUS MARRIAGES AMONG IRANIAN GEORGIANS

2010 ◽  
Vol 43 (1) ◽  
pp. 47-50 ◽  
Author(s):  
LALEH RAFIEE ◽  
MOSTAFA SAADAT
Keyword(s):  
Cross Sectional Study ◽  
Consanguineous Marriage ◽  
Cross Sectional ◽  
Isfahan Province ◽  
Consanguineous Marriages ◽  
Adverse Health Outcomes ◽  
Present Cross Sectional Study ◽  
Study Population ◽  
The Mean ◽  
High Level

SummaryConsanguineous marriage – marriage between relatives – has received a great deal of attention as a potential risk factor for many adverse health outcomes. The present cross-sectional study was done in order to illustrate the prevalence and types of consanguineous marriages among Iranian Georgians living in Frydoonshahr (Isfahan province, central Iran). Data on consanguineous marriages were collected using a simple questionnaire. The total number of couples in this study was 646. Consanguineous marriage was classified by the degree of relationship between couples. First cousin marriages (14.2%) were the most common type of consanguineous marriages, followed by second cousin (7.0%), beyond second cousin (1.5%) and first cousin once removed (0.6%). The mean inbreeding coefficient (α) was calculated as 0.0104 for the population. The present study shows that the study population, as other Iranian populations, has a high level of consanguinity.

MIGRATION AS A DETERMINANT OF MARRIAGE PATTERN: PRELIMINARY REPORT ON CONSANGUINITY AMONG AFGHANS

2005 ◽  
Vol 38 (3) ◽  
pp. 315-325 ◽  
Author(s):  
ABDUL WAHAB ◽  
MAHMUD AHMAD ◽  
SYED AKRAM SHAH
Keyword(s):  
Preliminary Report ◽  
Marriage Pattern ◽  
Cousin Marriage ◽  
Dominant Type ◽  
Resident Population ◽  
Refugee Population ◽  
Consanguineous Marriages ◽  
Significant Difference ◽  
The Mean ◽  
Coefficient Of Inbreeding

Two sample populations, one refugee and one resident, were studied. The frequencies of consanguineous marriages came out to be 49·8% and 55·4%, respectively, for the refugees and the residents. Caste endogamy was dominant both in the residents and the refugees. The mean coefficient of inbreeding was calculated to be 0·0303 for the refugee population and 0·0332 for the resident population samples. First cousin marriage was the dominant type of marriage in both samples; father’s brother’s daughter (FBD) marriage was more frequent among the refugees while mother’s brother’s daughter (MBD) marriage was more frequent among the residents. Education has no decreasing effect on the incidence of consanguineous marriages. A significant difference in the pattern of marriages in the refugees is observed after the Saur Revolution of 1979.

PREVALENCE OF CONSANGUINEOUS MARRIAGES IN WEST AND SOUTH OF AFGHANISTAN

2012 ◽  
Vol 45 (6) ◽  
pp. 799-805 ◽  
Author(s):  
MOSTAFA SAADAT ◽  
KHADIJEH TAJBAKHSH
Keyword(s):  
Ethnic Groups ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Consanguineous Marriages ◽  
Present Cross Sectional Study ◽  
Significant Difference ◽  
Different Types ◽  
The Mean ◽  
Coefficient Of Inbreeding

SummaryThe prevalence of consanguinity in eight provinces of Afghanistan has recently been reported by Saify & Saadat (2012). The present cross-sectional study was done in order to illustrate the prevalence and types of consanguineous marriages among other populations of Afghanistan. Data on types of marriages were collected using a simple questionnaire. The total number of couples in this study was 5200 from the following provinces: Farah, Ghazni, Herat, Hilmand, Kabul, Kandahar, Logar, Parwan and Wardak. Consanguineous marriages were classified by the degree of relationship between couples: double first cousins, first cousins, first cousins once removed, second cousins and beyond second cousins. The coefficient of inbreeding (F) was calculated for each couple and the mean coefficient of inbreeding (α) estimated for each population. The α in the country was 0.0226, ranging from 0.0203 in Farah province to 0.0246 in Herat province. There were significant differences between provinces for frequencies of different types of marriages (p<0.001). First cousin marriages (21.7%) were the most common type of consanguineous marriages, followed by second cousins (16.0%), first cousins once removed (14.0%), beyond second cousins (6.9%) and double first cousins (1.6%). There was significant difference between ethnic groups for the types of marriages (p<0.001). Tajiks (Soni) and Sadats showed the lowest (α=0.0215) and highest (α=0.0242) levels of consanguinity among ethnic groups in Afghanistan, respectively. The present study shows that the Afghani populations, the same as other Islamic populations, have high levels of consanguinity.

Sex linked versus autosomal inbreeding coefficient in close consanguineous marriages in the Basque country and Castile (Spain): genetic implications

1995 ◽  
Vol 27 (4) ◽  
pp. 379-391 ◽  
Author(s):  
R. Calderón ◽  
B. Morales ◽  
J. A. Peña ◽  
J. Delgado
Keyword(s):  
Genetic Risk ◽  
Population Genetic ◽  
Basque Country ◽  
Inbreeding Coefficient ◽  
Human Populations ◽  
Significant Heterogeneity ◽  
Consanguineous Marriages ◽  
Spanish Regions ◽  
The Mean ◽  
Made In

SummaryPedigree structures of 161 uncle/niece-aunt/nephew and 4420 first cousin consanguineous marriages registered during the 19th and 20th centuries in two large and very different Spanish regions have been analysed and their genetic consequences evaluated. The frequencies of the different pedigree subtypes within each degree of relationship were quite similar in both populations despite significant heterogeneity in inbreeding patterns. The mean X-linked inbreeding coefficient (Fx) for each type of cousin mating was calculated and compared to that expected for autosomal genes (F). The effect of genealogical structure on theFx/Fradio was compared to different cultural populations worldwide. Preferentiality and avoidance of close consanguinity along with specific types of pedigrees are discussed on the basis of premarital migration and sociocultural rules still deeply rooted in certain human groups. By admitting that the observedFxcoefficient is usually higher thanFin most human populations some remarks have been made in terms of population genetic risk.

scholarly journals The association between consanguineous marriage and offspring with congenital hearing loss

2020 ◽  
Vol 40 (6) ◽  
pp. 456-461
Author(s):  
Aljohara M. Almazroua ◽  
Luluh Alsughayer ◽  
Rayanh Ababtain ◽  
Yazeed Al-shawi ◽  
Abdulrahman A. Hagr
Keyword(s):  
Hearing Loss ◽  
Cross Sectional Study ◽  
Consanguineous Marriage ◽  
Auditory Neuropathy ◽  
Congenital Hearing Loss ◽  
Inherited Disorders ◽  
Cross Sectional ◽  
Consanguineous Marriages ◽  
Parents And Children ◽  
Significant Difference

ABSTRACT BACKGROUND: Consanguinity is a commonly recognized practice among marriages in the Middle East and may lead to an increase in the prevalence of inherited disorders. Autosomal recessive deafness is the most common form of inherited congenital hearing loss (CHL). OBJECTIVES: Determine the association of consanguineous marriages with congenital sensorineural hearing loss (SNHL) and auditory neuropathy. DESIGN: Descriptive and analytical cross-sectional study. SETTING: Ear specialist hospital. PATIENTS AND METHODS: Children with severe-to-profound congenital SNHL, who had been referred to the specialist hospital for cochlear implant were analyzed. Patients were divided into subgroups based on degree of consanguinity. MAIN OUTCOME MEASURE: The relative risk of having more than one child with SNHL in offspring of a consanguineous marriage. SAMPLE SIZE: 189 parents and children with CHL. RESULTS: The parents of 157 children (83.1%) were blood-related. Of those, 48 had more than one child with CHL (31.4%), while only two parents who were not blood-related had more than one child with CHL (6.25%; P =.005). Among the 189 children, 131 (69.3%) parents were direct cousins. Only 39 (20.6%) and 43 (22.8%) children had family histories of CHL on the paternal and maternal sides, respectively. There was no statistically significant difference in the prevalence of auditory neuropathy between the offspring of consanguineous and non-consanguineous marriages ( P =.648). CONCLUSION: The risk of having more than one child with SNHL in the offspring from a consanguineous marriage is 3.5 times higher than that of a non-consanguineous mating. LIMITATION: The association of hearing loss degree with consanguinity was not studied. CONFLICT OF INTEREST: None.

CONSANGUINITY AND ITS RELATIONSHIP TO DIFFERENTIAL FERTILITY AND MORTALITY IN THE KOTIA: A TRIBAL POPULATION OF ANDHRA PRADESH, INDIA

1997 ◽  
Vol 29 (2) ◽  
pp. 171-180
Author(s):  
YASMIN, J. M. NAIDU ◽  
C. G. N. MASCIE-TAYLOR
Keyword(s):  
Andhra Pradesh ◽  
Inbreeding Coefficient ◽  
Significant Heterogeneity ◽  
Tribal Population ◽  
Differential Fertility ◽  
Live Births ◽  
Consanguineous Marriages ◽  
The Mean ◽  
Visakhapatnam District

Data on patterns of marriage, differential fertility and mortality were collected from 211 Kotia women residing in Visakhapatnam district of Andhra Pradesh, India. Consanguineous marriages made up just over a quarter of the total, and of these, father's sister's daughter (FSD) were more common than mother's brother's daughter (MBD). The mean inbreeding coefficient for the sample (F) was 0·0172. Women in consanguineous marriages had a lower mean number of total conceptions, live births and living offspring (net fertility) than women in non-consanguineous marriages. Significant heterogeneity was found in the means of living offspring for FSD, MBD and non-consanguineous couples, but not for conceptions and live births.

PREVALENCE OF CONSANGUINEOUS MARRIAGES IN SYRIA

2009 ◽  
Vol 41 (5) ◽  
pp. 685-692 ◽  
Author(s):  
HASAN OTHMAN ◽  
MOSTAFA SAADAT
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Cross Sectional Study ◽  
Consanguineous Marriage ◽  
Common Type ◽  
Cross Sectional ◽  
Consanguineous Marriages ◽  
The Mean ◽  
Urban And Rural Areas ◽  
Coefficient Of Inbreeding

SummaryConsanguineous marriage is the union of individuals having at least one common ancestor. The present cross-sectional study was done in order to illustrate the prevalence and types of consanguineous marriages in the Syrian Arab Republic. Data on consanguineous marriages were collected using a simple questionnaire. The total number of couples in this study was 67,958 (urban areas: 36,574 couples; rural areas: 31,384 couples) from the following provinces: Damascus, Hamah, Tartous, Latakia, Al Raqa, Homs, Edlep and Aleppo. In each province urban and rural areas were surveyed. Consanguineous marriage was classified by the degree of relationship between couples: double first cousins (F=1/8), first cousins (F=1/16), second cousins (F=1/64) and beyond second cousins (F<1/64). The coefficient of inbreeding (F) was calculated for each couple and the mean coefficient of inbreeding (α) estimated for the population of each province, stratified by rural and urban areas. The results showed that the overall frequency of consanguinity was 30.3% in urban and 39.8% in rural areas. Total rate of consanguinity was found to be 35.4%. The equivalent mean inbreeding coefficient (α) was 0.0203 and 0.0265 in urban and rural areas, respectively. The mean proportion of consanguineous marriages ranged from 67.5% in Al Raqa province to 22.1% in Latakia province. The α-value ranged from 0.0358 to 0.0127 in these two provinces, respectively. The western and north-western provinces (including Tartous, Lattakia and Edlep) recorded lower levels of inbreeding than the central, northern and southern provinces. The overall α-value was estimated to be about 0.0236 for the studied populations. First cousin marriages (with 20.9%) were the most common type of consanguineous marriages, followed by double first cousin (with 7.8%) and second cousin marriages (with 3.3%), and beyond second cousin was the least common type.

PREVALENCE OF CONSANGUINEOUS MARRIAGES AMONG SHI'A POPULATIONS OF LEBANON

2013 ◽  
Vol 45 (5) ◽  
pp. 675-682 ◽  
Author(s):  
GHADIR EL-KHESHEN ◽  
MOSTAFA SAADAT
Keyword(s):  
Urban Areas ◽  
Cross Sectional Study ◽  
Consanguineous Marriage ◽  
Cross Sectional ◽  
Rural And Urban Areas ◽  
Consanguineous Marriages ◽  
Rural And Urban ◽  
Present Cross Sectional Study ◽  
Different Types ◽  
The Mean

SummaryIn genetics, a consanguineous marriage means union between couples who are related as second cousins or closer. The present cross-sectional study was carried out in order to illustrate the prevalence and types of consanguineous marriages in the Shi'a population living in widespread territories in Lebanon including the Bekaa Valley, the south of Lebanon and the southern suburb of Beirut. Data on types of marriages were collected using a simple questionnaire. The total number of couples in the study was 1203. Consanguineous marriage was classified by the degree of relationship between couples. The overall frequency of consanguinity was found to be 28.4%, with first cousin marriages (21.3%) being the most common type followed by first cousins once removed (5.5%), then double first cousins (0.8%). The frequencies of second cousin and beyond second cousin marriages were the same at 0.4% of all the marriages. The mean inbreeding coefficient (α) was estimated at about 0.0161 for the population. There were no significant differences between the three studied territories for frequencies of different types of marriages (p>0.1), nor were there significant differences between the rural and urban areas (p>0.1).

scholarly journals ESTIMATES OF COUSIN MARRIAGE AND MEAN INBREEDING IN THE UNITED KINGDOM FROM ‘BIRTH BRIEFS’

2001 ◽  
Vol 33 (1) ◽  
pp. 55-66 ◽  
Author(s):  
MALCOLM T. SMITH
Keyword(s):  
United Kingdom ◽  
Consanguineous Marriage ◽  
Inbreeding Coefficient ◽  
Cousin Marriage ◽  
Previous Generation ◽  
The United Kingdom ◽  
Secular Decline ◽  
Nineteenth And Twentieth Centuries ◽  
The Mean ◽  
Late Nineteenth

From 626 ascendant genealogies, known as ‘birth briefs’, deposited by members of the Society of Genealogists in their London library, rates of consanguineous marriage and coefficients of mean inbreeding (α) of offspring were estimated for cohorts of marriages contracted in the late nineteenth and early twentieth centuries. The rate of first cousin marriage in the generation estimated to have married during the 1920s was 0·32%, with no marriages between second cousins. The mean inbreeding coefficient for the offspring of these marriages was estimated as 0·0002. In the previous generation 1·12% of the marriages were between first cousins, and the estimate of mean inbreeding was 0·0007. Comparison with data taken from the published literature suggests that the levels of cousin marriage observed are consistent with a secular decline during the late nineteenth and twentieth centuries.

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