. 2005 Jan 21;102(5):1797–1802. doi: 10.1073/pnas.0408402102

Table 3. Mean parameter performance for three groups of subjects.

Parameter	Young (n = 25)	Older normal (n = 16)	MCI (n = 11)
a₀	1.06 ± 0.33^a	0.85 ± 0.23^b	0.75 ± 0.27^b
a₁	2.81 ± 0.39^a	1.78 ± 0.59^b	2.31 ± .98^c
τ	0.34 ± 0.16^a	0.30 ± 0.19^a	0.073 ± 0.06^b

Means in the same row with different subscripted letters differ significantly, as determined by Tukey's HSD test (P < 0.05).