Table 1.

Participants' demographic information (% of age decile given in round brackets)

	Decile							Statistical testsa
	1	2	3	4	5	6	7	X2 or F‐test	P‐value
Age range [years]	18–27	28–37	38–47	48–57	58–67	68–77	78–87
Gender								3.64	0.725
Men	14 (60.9)	32 (59.3)	35 (59.3)	29 (52.7)	32 (49.2)	22 (45.8)	17 (54.8)
Women	9 (39.1)	22 (40.7)	24 (40.7)	26 (47.3)	33 (50.8)	26 (54.2)	14 (45.2)
Handednessb								0.80	0.572
Mean/ SD	80/41	78/50	74/53	85/40	78/52	88/37	91/31
Range [min/max]	−100/100	−100/100	−100/100	−100/100	−100/100	−90/100	−70/100
MMSE								6.76	<0.001
Mean/SD	29.5/1.1	29.3/1.2	28.9/1.2	29.3/0.9	29/1.2	28.2/1.5	28.4/1.3
Range [min/max]	25/30	25/30	26/30	27/30	26/30	25/30	25/30

^aStatistical test to indicate whether demographics vary between different deciles

^bHigher scores indicate greater right‐hand preference