| Titre : | Season of birth is not associated with risk of early adult death in rural Senegal : Perinatal and early-life influences on disease. (2004) |
| Auteurs : | Kirsten-B SIMONDON ; Peter Aaby ; Aldiouma DIALLO ; Eric ELGUERO ; Adarna MARRA ; Francois SIMONDON ; Institut de Recherche pour Ie Développement (I.R.D.). Epidemiology and Prevention Unit. Ur 24. Montpellier. FRA ; Ird. Niakhar Population and Health Unit. Us 009. Dakar. SEN |
| Type de document : | Article |
| Dans : | International journal of epidemiology (vol. 33, n° 1, 2004) |
| Pagination : | 130-136 |
| Langues: | Anglais |
| Mots-clés : | Variation saisonnière ; Facteur associé ; Association ; Facteur risque ; Milieu rural ; Adulte ; Homme ; Mortalité ; Gambie ; Afrique ; Sénégal ; Epidémiologie ; Mortalité foetale ; Foetus ; Maladie nutrition ; Médecine tropicale |
| Résumé : | [BDSP. Notice produite par INIST-CNRS 2R0xmlJb. Diffusion soumise à autorisation]. Background : In a rural area of the Gambia, West Africa, young adults born in the'hungry'season had a high excess of deaths (mortality ratios (MR) : 3.7 from 14.5 years and 10.3 from 25 years, P<0.0001). Among several potential causal factors, fetal undernutrition was considered the most plausible. This study is a similar analysis of children and young adults living in rural Senegal, close to the Gambia. Methods : A cohort of 9192 subjects born 1962-2001 with prospectively collected dates of birth and death was analysed. MR by season of birth (July-December/January-June) was estimated using Cox's proportional hazards analysis. The nutritional status of non-pregnant women was analysed at monthly intervals 1990-1996. Results : MR by season of birth was slightly greater than 1 during infancy, and close to 1 from 1-5 years and from 5-14.5 years. From 14.5 years old the MR was 0.77 (95% CI : 0.47,1.25, P=0.29), compared with 0.53 (95% CI : 0.28,1.02, P=0.056) from 20 years and 0.33 (95% CI : 0.09,1.25, P=0.10) from 25 years. The weight of women varied strongly by season : means were 3.0-3.9 kg lower at the end of the rainy season (September-November) than during the dry season (February-May, P<0.001 for each year). Conclusions : This study found no increased risk of death among young adults born during the hungry season in a rural West African area despite large seasonal variations in women's nutritional status. The strongly increased risk in adult Gambians is probably not explained by fetal undernutrition. |
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