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. 2017 Mar 2;12(3):e0172484. doi: 10.1371/journal.pone.0172484

Fig 1. Difference of Lawton Index total score in each clinical stage of AD, aMCI and NC.

Fig 1

The patients were divided into five groups: normal cognition (NC), amnestic mild cognitive impairment (aMCI) and Alzheimer disease (AD). AD patients were subclassified into three subgroups by Mini-Mental State Examination score: AD 30–24, AD 23–20 and AD 19–15 (MMSE score range 30–24, 23–20 and 19–15). Differences between groups were analyzed by analysis of covariance (Bonferroni) with adjustment for age. Lawton Index total score was significantly lowered in persons with cognitive impairment. ** p < 0.01, * p < 0.05 compared with NC.