ABSTRACT
The study attempts at estimating the sex-ratio at birth in Nigeria. The study focuses on demographic surveys with complete maternity histories, including some 0.50 million births. It compares results with published estimates from births in health facilities and a few data from vital registration, including some 1.13 million births. Results from demographic surveys give an estimate of about 106 boys for 100 girls. There were no significant variations by large region in the country, and no significant trend over the years (1990-2018). Published estimates provided a similar value (106.2), with somewhat lower value in health facilities (105.3), and somewhat higher values in local vital registration (106.8), and major variations among available studies. Despite uncertainty, Nigeria appears to have higher sex-ratios than most African countries, with the exception of Ethiopia, and higher values than its five neighboring countries. Reasons for these high values of the secondary sex-ratio are discussed. (Afr J Reprod Health 2022; 26[4]: 92-97).
Subject(s)
Women , Demography , Vital Statistics , History , Hospitals, Maternity , Parturition , Men , NigeriaABSTRACT
Si la trypanosomiase humaine africaine existant deja en Centrafrique avant la penetration europeenne; cette derniere s'est neanmoins accompagnee d'une flambee epidemique le long de tous les grands axes de conmmunication (vallee de la Sangha et de l'Oubangui; routes du Tchad). Il fallut attendre le debut des annees 60 pour maitriser l'endemie. Des 1970 les foyers se reveillent les uns apres les autres; sauf celui de la vallee de l'Oubangui proprement dit qui reste quiescent. L'analyse des donnees laisse a penser que le risque est reel pour les quatre foyers frontaliers de connaitre une nouvelle flambee