Multiple births in Hausa women

Area of Science:

• Reproductive biology
• Human genetics
• Demography

Background:

• The incidence of multiple births varies significantly across different ethnic groups and geographical locations.
• Previous studies suggest potential links between multiple births and factors like genetics, maternal age, and environmental conditions.

Purpose of the Study:

• To investigate the incidence and characteristics of multiple births among the Hausa ethnic group in Nigeria.
• To compare these rates with Western populations and other Nigerian ethnic groups.
• To explore potential associations with maternal age, climate, and malaria prevalence.

Main Methods:

• Retrospective analysis of maternity records from 5750 Hausa women in Nigeria's savannah zone.
• Calculation of twin and triplet birth rates per 1000 births.
• Assessment of zygosity in twin births.
• Statistical analysis to determine associations with maternal age, climate, and malaria.

Main Results:

• The incidence of multiple births was 40 twins and 2 triplets per 1000 births.
• Twenty-six percent of twin births were monozygous.
• The multiple birth rate was approximately five times higher than in Western populations.
• Rates were lower compared to other Nigerian ethnic groups in southern regions.
• Multiple birth incidence correlated with maternal age but not with climate or malaria prevalence.

Conclusions:

• The Hausa population in Nigeria exhibits a unique pattern of multiple births, higher than Western but lower than other Nigerian groups.
• Maternal age is a significant factor influencing multiple birth rates in this population.
• Environmental factors such as climate and malaria do not appear to be associated with multiple birth incidence in Hausa women.