Using imputation to provide harmonized longitudinal measures of cognition across AIBL and ADNI.
Using imputation to provide harmonized longitudinal measures of cognition across AIBL and ADNI.
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DOI:
10.1038/s41598-021-02827-6
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发表时间:
2021-12-10
影响因子:
4.6
通讯作者:
Burnham SC
中科院分区:
文献类型:
--
作者:
Shishegar R;Cox T;Rolls D;Bourgeat P;Doré V;Lamb F;Robertson J;Laws SM;Porter T;Fripp J;Tosun D;Maruff P;Savage G;Rowe CC;Masters CL;Weiner MW;Villemagne VL;Burnham SC
To improve understanding of Alzheimer’s disease, large observational studies are needed to increase power for more nuanced analyses. Combining data across existing observational studies represents one solution. However, the disparity of such datasets makes this a non-trivial task. Here, a machine learning approach was applied to impute longitudinal neuropsychological test scores across two observational studies, namely the Australian Imaging, Biomarkers and Lifestyle Study (AIBL) and the Alzheimer's Disease Neuroimaging Initiative (ADNI) providing an overall harmonised dataset. MissForest, a machine learning algorithm, capitalises on the underlying structure and relationships of data to impute test scores not measured in one study aligning it to the other study. Results demonstrated that simulated missing values from one dataset could be accurately imputed, and that imputation of actual missing data in one dataset showed comparable discrimination (p < 0.001) for clinical classification to measured data in the other dataset. Further, the increased power of the overall harmonised dataset was demonstrated by observing a significant association between CVLT-II test scores (imputed for ADNI) with PET Amyloid-β in MCI APOE-ε4 homozygotes in the imputed data (N = 65) but not for the original AIBL dataset (N = 11). These results suggest that MissForest can provide a practical solution for data harmonization using imputation across studies to improve power for more nuanced analyses.
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影响因子:
7
作者:
McArdle, John J.;Grimm, Kevin J.;Hamagami, Fumiaki;Bowles, Ryan P.;Meredith, William
通讯作者:
Meredith, William
DOI:
10.1016/s0140-6736(20)32205-4
发表时间:
2021-04-24
期刊:
Lancet (London, England)
影响因子:
--
作者:
Scheltens P;De Strooper B;Kivipelto M;Holstege H;Chételat G;Teunissen CE;Cummings J;van der Flier WM
通讯作者:
van der Flier WM
影响因子:
4.5
作者:
Ngufor C;Van Houten H;Caffo BS;Shah ND;McCoy RG
通讯作者:
McCoy RG
DOI:
10.1016/j.jalz.2011.03.005
发表时间:
2011-05
期刊:
Alzheimer's & dementia : the journal of the Alzheimer's Association
影响因子:
--
作者:
McKhann GM;Knopman DS;Chertkow H;Hyman BT;Jack CR Jr;Kawas CH;Klunk WE;Koroshetz WJ;Manly JJ;Mayeux R;Mohs RC;Morris JC;Rossor MN;Scheltens P;Carrillo MC;Thies B;Weintraub S;Phelps CH
通讯作者:
Phelps CH
影响因子:
3.1
作者:
Lim, Yen Ying;Villemagne, Victor L.;Maruff, Paul
通讯作者:
Maruff, Paul