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. 2007 Mar 19;78(9):917–928. doi: 10.1136/jnnp.2006.100669

Table 2 Demographic details for the Alzheimer's disease and frontotemporal dementia groups.

AD FTD
N* studies N* participants Mean SD Range N* studies N* participants Mean SD Range
N 94 2936 31.2 41.1 4.0 236.0 94 1748 18.6 12.6 2.0 67.0
Age (y) 88 2792 70.6 5.1 55.7 79.9 89 1658 64.8 4.6 56.0 78.1
Education (y) 61 1878 11.4 3.0 4.0 16.3 62 1091 11.8 3.0 4.0 17.4
Time since diagnosis (y) 38 1237 3.8 1.5 1.7 9.8 38 752 3.9 1.4 1.3 8.4
MMSE 76 2506 21.4 3.0 8.9 26.6 75 1460 22.7 3.0 13.8 28.7
CDR 20 398 1.2 0.7 0.5 3.5 19 332 1.2 0.9 0.5 4.5

AD, Alzheimer's disease; CDR, Clinical Dementia Rating scale; FTD, frontotemporal dementia; MMSE, Mini‐Mental State Examination.

*The N differs between variables because not all studies provided data for each variable