@article {7554,
	title = {Trends in the incidence of dementia: design and methods in the Alzheimer Cohorts Consortium.},
	journal = {Eur J Epidemiol},
	volume = {32},
	year = {2017},
	month = {2017 Oct},
	pages = {931-938},
	abstract = {<p>Several studies have reported a decline in incidence of dementia which may have large implications for the projected burden of disease, and provide important guidance to preventive efforts. However, reports are conflicting or inconclusive with regard to the impact of gender and education with underlying causes of a presumed declining trend remaining largely unidentified. The Alzheimer Cohorts Consortium aggregates data from nine international population-based cohorts to determine changes in the incidence of dementia since 1990. We will employ Poisson regression models to calculate incidence rates in each cohort and Cox proportional hazard regression to compare 5-year cumulative hazards across study-specific epochs. Finally, we will meta-analyse changes per decade across cohorts, and repeat all analysis stratified by sex, education and APOE genotype. In all cohorts combined, there are data on almost 69,000 people at risk of dementia with the range of follow-up years between 2 and 27. The average age at baseline is similar across cohorts ranging between 72 and 77. Uniting a wide range of disease-specific and methodological expertise in research teams, the first analyses within the Alzheimer Cohorts Consortium are underway to tackle outstanding challenges in the assessment of time-trends in dementia occurrence.</p>},
	issn = {1573-7284},
	doi = {10.1007/s10654-017-0320-5},
	author = {Chibnik, Lori B and Wolters, Frank J and B{\"a}ckman, Kristoffer and Beiser, Alexa and Berr, Claudine and Bis, Joshua C and Boerwinkle, Eric and Bos, Daniel and Brayne, Carol and Dartigues, Jean-Fran{\c c}ois and Darweesh, Sirwan K L and Debette, Stephanie and Davis-Plourde, Kendra L and Dufouil, Carole and Fornage, Myriam and Grasset, Leslie and Gudnason, Vilmundur and Hadjichrysanthou, Christoforos and Helmer, Catherine and Ikram, M Arfan and Ikram, M Kamran and Kern, Silke and Kuller, Lewis H and Launer, Lenore and Lopez, Oscar L and Matthews, Fiona and Meirelles, Osorio and Mosley, Thomas and Ower, Alison and Psaty, Bruce M and Satizabal, Claudia L and Seshadri, Sudha and Skoog, Ingmar and Stephan, Blossom C M and Tzourio, Christophe and Waziry, Reem and Wong, Mei Mei and Zettergren, Anna and Hofman, Albert}
}
