. 2017 Feb 10;12(2):e0171331. doi: 10.1371/journal.pone.0171331

Table 2. Descriptive and comparative statistics for the psycho-functional, anthropometric, multidimensional and bioelectrical variables in healthy controls (HC), Mild Cognitive Impairment (MCI) and Alzheimer’s disease (AD) women.

	HC (N = 29).	MCI (N = 20).	AD (N = 35)	F	Post Hoc ^§	F ^♯
Demographic variables
Age (y)	75.1 ± 6.4	76.9 ± 4.5	82.1 ± 4.8	14.82^***	HC<AD; MCI<AD
Education (y)	8.0 ± 3.4	6.5 ± 3.5	6.1 ± 3.3	2.46		3,81^*
Psycho-functional indicators
MMSE score	29.2 ± 0.9	25.9 ± 2.5	18.9 ± 4.9	75.42^***	AD<MCI; MCI<HC	50,12^***
GDS score^a	7.6 ± 4.0	10.7 ± 5.6	7.6 ± 5.0	2.56		1,96
ADL (functions lost)	0.0 ± 0.0	0.0 ± 0.0	1.9 ± 1.8	27.09^***	HC = MCI<AD	21,87^***
IADL (functions lost)	0.0 ± 0.0	0.3 ± 0.6	5.0 ± 2.0	104.93^***	HC<MCI<AD	102,38^***
Nutritional indicators
MNA screening score	12.7 ± 1.4	12.4 ± 2.4	11.8 ± 1.4	2.24		2,02
MNA global score	14.4 ± 1.1	13.0 ± 1.4	11.6 ± 1.7	28.80^***	AD<MCI <HC	19,90^***
MNA total score	27.1 ± 4.5	25.4 ± 3.1	23.4 ± 2.7	16.62^***	AD<HC	12,11^***
Anthropometric variables
BMI (kg/m²)	27.2 ± 4.5	25.8 ± 4.3	25.1 ± 3.9	1.87		1,88
Arm circumfence (cm)	26.9 ± 3.2	25.4 ± 2.8	25.0 ± 3.1	3.02		3,07^*
Calf circumfence (cm)	33.9 ± 2.8	33.1 ± 2.7	30.9 ± 3.5	7.68^**	AD<HC = MCI	5,58^**
Waist circumfence (cm)	93.0 ± 12.2	86.4 ± 9.5	86.4 ± 10.5	3.48		2,37
Bioelectrical variables
Rz/h (Ώ/m)	286.8 ± 34.3	303 ± 38.2	311.9 ± 30.9	4.40^*	HC<AD	3,30^*
Xc/h (Ώ/m)	30.2 ± 4.1	29.3 ± 3.4	29.5 ± 5.0	0.30		4,71^**
PA (°)	6.1 ± 0.6	5.6 ± 0.6	5.4 ± 0.7	6.39^*	AD<HC	17,54^***
Z/h (Ώ/m)	288.4 ± 34.4	305 ± 38.2	313.4 ± 31.0	7.20^*	HC<AD	3,21^*

Values are expressed as mean ± standard deviation.

^§ only significant differences are shown.

^a available for HC, MCI and 14,3% AD group.

* p<0.05.

** p<0.01.

*** p< 0.001.

^♯ general linear multivariate model (adjusted for age).