Age-specific ALS incidence: a dose–response meta-analysis

Abstract : To evaluate the association between worldwide ALS incidence rates and age, using a dose–response meta-analysis. We reviewed Medline and Embase up to July 2016 and included all population-based studies of newly-diagnosed cases, using multiple sources for case ascertainment. A dose–response meta-analysis was performed. A meta-regression investigated potential sources of heterogeneity. Of 3254 articles identified in the literature, we included 41 incidence studies covering 42 geographical areas. Overall, the fit between observed and predicted age-specific rates was very good. The expected variation of ALS incidence with age was characterized, in each study, by a progressive increase in the incidence from the 40s leading to a peak in the 60s or 70s, followed by a sharp decrease. Cochran’s Q test suggested a significant heterogeneity between studies. Overall, estimated patterns of ALS age-specific incidence (at which the peak was reached) were similar among subcontinents of Europe and North America: peak of ALS incidence ranged in these areas between 6.98 and 8.17/100,000 PYFU, which referred to age in the range 71.6–77.4 years. The relationship between age and ALS incidence appeared different for Eastern Asia which was characterized by a peak of ALS incidence at 2.20/100,000 PYFU around 75 years of age. This study confirms the consistency of the age-specific ALS incidence pattern within different subcontinents. Age-specific incidence appears lower in Eastern Asia as compared to Europe and North America.
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https://hal-unilim.archives-ouvertes.fr/hal-01784577
Contributeur : Elisabeth Grelier <>
Soumis le : jeudi 3 mai 2018 - 15:53:27
Dernière modification le : vendredi 8 juin 2018 - 09:58:04

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Benoît Marin, Andrea Fontana, Simona Arcuti, Massimilano Copetti, Farid Boumédiène, et al.. Age-specific ALS incidence: a dose–response meta-analysis. European Journal of Epidemiology, Springer Verlag, 2018, pp.1-14. ⟨10.1007/s10654-018-0392-x⟩. ⟨hal-01784577⟩

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