American Journal of Alzheimer's Disease & Other Dementias®
Are the “Serial 7s” and Spelling Backwards Tasks From the MMSE Comparable in MCI and Dementia?
We explored the comparability of the “Serial 7s” (S7) and Spelling Backwards (SB) tasks from MMSE in 313 patients with MCI ( N =54) and dementia ( N =259) due to Alzheimer’s disease (AD), frontotemporal lobar degeneration, Lewy body disease, non-AD degenerative (NADD), chronic cerebrovascular disease (CVD) or mixed (AD+CVD) etiologies. Although the two tasks were significantly associated with each other ( r =.54), a two one-sided test revealed that they were not statistically equivalent. Consistently, a linear mixe …