Table 3. Pre and post test comparison results of memory-related behaviours of subjects using a t-test

		FLJ (n = 23)		Placebo (n = 19)
		M (SD)	Difference M (SD)	M (SD)	Difference M (SD)	t-value	p-value
MoCA-K	Pre	27.50 (1.68)	0.14 (1.40)	27.74 (1.36)	–0.23 (2.57)	0.752	0.455
MoCA-K	Post	27.64 (2.18)	0.14 (1.40)	27.51 (2.13)	–0.23 (2.57)	0.752	0.455
K-WAIS-IV-number memorization task	Pre	29.19 (4.56)	2.47 (3.76)	30.34 (4.87)	0.51 (2.29)	2.64	0.01
K-WAIS-IV-number memorization task	Post	31.67 (4.40)	2.47 (3.76)	30.86 (5.27)	0.51 (2.29)	2.64	0.01
K-WAIS-IV-arithmetic task	Pre	14.72 (3.12)	2.69 (2.05)	14.17 (4.00)	1.51 (2.69)	2.08	0.041
K-WAIS-IV-arithmetic task	Post	17.42 (2.67)	2.69 (2.05)	15.69 (4.21)	1.51 (2.69)	2.08	0.041
K-WAIS-IV-ordering task	Pre	19.17 (3.21)	2.08 (2.10)	19.63 (2.91)	1.14 (1.72)	2.061	0.043
K-WAIS-IV-ordering task	Post	21.25 (3.02)	2.08 (2.10)	20.77 (3.25)	1.14 (1.72)	2.061	0.043
PAL	Pre	10.22 (8.60)	–3.61 (5.69)	10.06 (8.65)	–1.26 (3.64)	–2.07	0.042
PAL	Post	6.61 (7.89)	–3.61 (5.69)	8.80 (8.06)	–1.26 (3.64)	–2.07	0.042
SWM	Pre	14.89 (11.01)	–3.92 (9.83)	10.23 (12.14)	0.97 (7.54)	–2.347	0.022
SWM	Post	10.97 (9.76)	–3.92 (9.83)	11.20 (11.34)	0.97 (7.54)	–2.347	0.022

FLJ, fermented Laminaria japonica; M, means of each parameter; MoCA-K, Korean version of Montreal Cognitive Assessment; K-WAIS, Korean Wechsler Adult Intelligence Scale; PAL, Paired Associates Learning; SWM, Spatial Working Memory.