Table 5.

Trail Making Test Part B Error Rates for Control Participants (n=269) (reported in cumulative percentages)

Age: Education:	55–74 <16 years	Age 75–98 <16 years	Age 55–74 ≥16 years	Age 75–98 ≥16 years
Errors	N=46	N=50	N=106	N=67
0	100.0	100.0	100.0	100.0
1	39.1	46.0	21.7	23.9
2	15.2	22.0	3.8	10.4
3	4.3	8.0	0.9	1.5
≥4	2.2	2.0	0.9

Note: Cumulative percentages represent the percent of individuals who committed at least that many errors (as in Stern & White, 2003).