TABLE 6.

Effect of testing environment, and first‐degree family history of dementia, on the primary outcome of each cognitive test

Effect of testing environment
	Age		Education		Group		Alone (n = 340)	With others (quiet) (n = 433)	With others (noisy) (n = 54)
	(df) F	P	(df) F	P	(df) F	P	Mean (SD)	Mean (SD)	Mean (SD)
DET speed	(1760) 37.01	<.001	(1760) 5.64	.018	(2760) 0.37	.691	2.54 (0.005)	2.55 (0.004)	2.55 (0.013)
IDN speed	(1760) 54.62	<.001	(1760) 2.73	.100	(2760) 0.001	.999	2.69 (0.004)	2.70 (0.003)	2.70 (0.009)
OBK accuracy	(1760) 2.83	.093	(1760) 10.57	.001	(2760) 0.10	.903	1.39 (0.009)	1.39 (0.007)	1.40 (0.021)
OCL accuracy	(1760) 4.33	.038	(1760) 20.49	<.001	(2760) 0.85	.427	1.01 (0.006)	1.00 (0.005)	1.02 (0.016)

Effect of first‐degree family history of dementia
	Age		Education		Group		1° family hx (n = 674)	Without 1° family hx (n = 704)
	(df) F	P	(df) F	P	(df) F	P	Mean (SD)	Mean (SD)
DET speed	(11,358) 10.84	<.001	(11,358) 45.90	<.001	(11,358) 10.21	.001	2.56 (0.104)	2.54 (0.106)
IDN speed	(11,358) 75.25	<.001	(11,358) 9.76	.002	(11,358) 9.26	.002	2.70 (0.052)	2.69 (0.053)
OBK accuracy	(11,358) 5.52	.019	(11,358) 8.81	.003	(11,358) 0.17	.684	1.39 (0.156)	1.39 (0.159)
OCL accuracy	(11,358) 7.08	.008	(11,358) 24.43	<.001	(11,358) 0.02	.901	1.00 (0.104)	1.00 (0.106)

Note: FDR corrections have been applied to all P values.

Abbreviations: DET, Detection test; FDR, false‐discovery rate; IDN, Identification test; OBK, One‐Back test; OCL, One Card Learning test.