Table 5.

Linear mixed effects model examining the effects of time, MCI subtypes and their interaction on phonemic fluency performance

Variable	Estimate	t	95% CI	p value
aMCI
Time (0–20 s vs. 21–40 s)	−7.84	−32.57	[−8.32, −7.37]	<.001
Time (0–20 s vs. 41–60 s)	−10.10	−42.54	[−10.56, −9.63]	<.001
aMCI	−2.69	−1.71	[−5.77, 0.40]	.09
aMCI*Time
(0–20 s vs. 21–40 s)	0.77	0.60	[−1.74, 3.28]	.55
(0–20 s vs. 41–60 s)	0.25	0.20	[−2.22, 2.72]	.84
naMCI
Time (0–20 s vs. 21–40 s)	−7.84	−32.84	[−8.31, −7.37]	< .001
Time (0–20 s vs. 41–60 s)	−10.10	−42.96	[−10.56, −9.63]	<.001
naMCI	−4.97	−3.74	[−7.58, −2.35]	<.001
naMCI*Time
(0–20 s vs. 21–40 s)	3.06	2.83	[0.94, 5.19]	.005
(0–20 s vs. 41–60 s)	2.43	2.28	[0.34, 4.52]	.02
MCIcom
Time (0–20 s vs. 21–40 s)	−7.84	−33.04	[−8.31, −7.38]	<.001
Time (0–20 s vs. 41–60 s)	−10.10	−43.17	[−10.55, −9.64]	<.001
MCIcom	−4.48	−3.81	[−6.78, −2.17]	<.001
MCIcom*Time
(0–20 s vs. 21–40 s)	2.26	2.40	[0.41, 4.10]	.02
(0–20 s vs. 41–60 s)	3.26	3.52	[1.44, 5.08]	<.001

Note. naMCI= non-amnestic mild cognitive impairment; MCIcom= Mild cognitive impairment combined.