Incidence and Aetiology of Multiple Births in Nigeria

Cox, Michael

doi:10.1111/j.1471-0528.1963.tb04995.x

Cited by 26 publications

(21 citation statements)

References 14 publications

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“…Gedda (1961) maintained that the latitude and the climate played a secondary role to ethnic factors. Cox (1963) reported in his study in Nigeria that there was an association between a hot, humid climate and the high multiple birth rate. It is likely that an ethnic factor acts more strongly upon the twin incidence rate than any other factor.…”

Section: Discussionmentioning

confidence: 95%

Epidemiology of twin births from a climatic point of view.

Kamimura¹

1976

Journal of Epidemiology & Community Health

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Epidemiology of twin births from a climatic point of view. The twinning rate was analysed using figures taken from statistics for Japan. During the years 1955 to 1959 there were 58 570 twin deliveries out of a total of 9 088 233, a frequency of 6-44 per 1000. Using Weinberg's differential method for zygosity estimation, the monozygotic twinning rate was 4 04 per 1000 and the dizygotic was 2-40. Twinning rates in 46 prefectures were also estimated and their correlations with meteorological parameters as well as with the mortality from cerebrovascular disease were examined. The twinning rates increased from a low level in the south west to a high level in the north east of Japan. The tendency was more obvious for the dizygotic than the monozygotic twinning rate. A negative correlation was observed between incidence rates of dizygotic twins and mean airtemperatures throughout the year, and a positive one between incidences of dizygotic twins and mortality rates for vascular lesions affecting the central nervous system in 46 prefectures. A seasonal variation of twinning rates was also observed in Niigata City for statistics of births during the periods 1948-55 and 1963-70. This took the form of a bimodal curve, with high conception rates for twin births in intermediate mild seasons, the spring and autumn and, low rates in the more stressful hot and cold seasons. These relationships between climate and twin births within a single race-group are discussed.

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Section: Discussionmentioning

confidence: 95%

Epidemiology of twin births from a climatic point of view.

Kamimura¹

1976

Journal of Epidemiology & Community Health

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“…These results may be higher than the actual figures. The possible etiologic association of the chronic malaria with multiple pregnancy has been discussed elsewhere (3), and opinions vary on the role of malnutrition in this respect (3,11). Such inflationary considerations notwithstanding, the figure of 1:1014, representing the incidence of triplet maternities in this review, is considerably higher than corresponding reports from the United States of 1:7925 (9) and from the United Kingdom of 1:9520 (Office of Population, Census and Surveys for England and Wales, 1973), but lower than the incidence of 1:612 recorded for the Yoruba tribe of Western Nigeria (10).…”

Section: Discussionmentioning

confidence: 99%

Triplet Pregnancy: A Review of 27 Cases

Egwuatu

1980

Intl J Gynecology & Obste

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Analysis of 27 consecutive triplet pregnancies seen at the University Teaching Hospital in Enugu, Nigeria, from 1972 to 1979 revealed an incidence of one in 1014 live births; three of these mothers had had a previous twin pregnancy. Overall fetal mortality was 30.9%, with babies of older women faring better than those of the younger. The fetal death rate was 1.8 times greater in the absence of antenatal supervision. Although the male infant was generally heavier at birth, sex did not influence survival and neither predominated. Surprisingly, vertex delivery, independent of birth order, was associated with the worst prognosis. All babies of sets having a combined birth weight of 2800 gm and under died; all those 5440 gm and above survived. Maturity, rather than birth weight, determined fetal survival, which was also unaffected by time interval between deliveries of a set. The first triplet did have the least birth hazard.

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“…Reported rates specific to southwestern Nigeria and the Yoruba, where this study took place, range from 24-57 per 1000 maternities (Fakeye, 1986;Nylander, 1967;1971;Marinho et al, 1986). Other studies in West Africa have reported rates ranging from 35-56 per 1000 maternities (Azubike, 1982;Cox, 1963;Guo & Grummer-Strawn, 1993;Rehan & Tafida, 1980). Outside of West Africa, Van Roosmalen (1988) reported a range of 15-20 twin births per 1000 in Tanzania, and Nkata (1999) documented 40 per thousand in Zambia.…”

Section: Introductionmentioning

confidence: 97%

Stress and Coping Among Mothers of Twins in Rural Southwestern Nigeria

Salami

Brieger²,

Olutayo

2003

Twin Research

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H igh rates of twinning have been reported in Africa. This study sought to learn whether mothers of twins experience different stress levels than those who have only singletons. Both twin mothers (101) and singleton mothers (101) were interviewed. Using a scale of 15 stressors the researchers found that the mean stress score was significantly higher for twin mothers than singleton mothers. Higher stress scores were also associated with parity and perceptions of problems in caring for children and inversely related to perceived levels of social support. Confronting stressors or simply accepting them were the two main ways that mothers coped with their problems.

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Incidence and Aetiology of Multiple Births in Nigeria

Cited by 26 publications

References 14 publications

Epidemiology of twin births from a climatic point of view.

Epidemiology of twin births from a climatic point of view.

Triplet Pregnancy: A Review of 27 Cases

Stress and Coping Among Mothers of Twins in Rural Southwestern Nigeria

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