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. 2020 Jan 24;17(1):e1003012. doi: 10.1371/journal.pmed.1003012

Table 2. Demographics of individuals from GEO data.

Brain Region and Characteristics AD CN Total p-value
ERC 25 52 77
 Female (%) 56.0 40.4 45.5 0.228
 Age (mean, SD) 86.12 (5.718) 62.288 (24.526) 70.026 (23.241) <0.001*
Hippocampus 29 56 85
 Female (%) 48.3 41.1 43.5 0.645
 Age (mean, SD) 81.241 (7.945) 66.464 (23.766) 71.506 (20.989) 0.010*
Total 54 108 162

*Indicates p-value <0.05 for global group differences across demographic characteristics.

Differences in sex were tested with the Fisher test, and differences in age were tested with the Kruskal-Wallis test.

Abbreviations: AD, Alzheimer disease; CN, control; ERC, entorhinal cortex; GEO, Gene Expression Omnibus