Table 3.

Spearman correlations comparing Harvard APT (adjusted time) with CFAB, ADCS ADL-PI, and SSPP-IADL across all participants and within CN and MCI participants separately

			All participants				CN				MCI
			APT-Script		APT-PCP		APT-Script		APT-PCP		APT-Script		APT-PCP
			r s	p	r s	p	r s	p	r s	p	r s	p	r s	p
CFAB (CN: n = 29; MCI: n = 17)	CFAB-Script	Time	0.17	0.26	0.25	0.10	0.09	0.63	0.12	0.52	0.27	0.29	0.39	0.13
		Rate	−0.42	0.004*	−0.75	< 0.001*	−0.29	0.13	−0.67	< 0.001*	−0.70	0.002*	−0.85	< 0.001*
	CFAB-ATM	Time	0.34	0.02*	0.42	0.005*	0.39	0.04	0.42	0.03	0.26	0.33	0.60	0.01*
		Rate	−0.28	0.06	−0.53	< 0.001*	−0.33	0.09	−0.42	0.03	−0.21	0.44	−0.68	0.004*
ADCS ADL-PI	Participant-report (CN: n = 24; MCI: n = 14)		0.08	0.62	0.27	0.11	0.13	0.56	0.34	0.11	−0.05	0.86	0.001	1.00
	Study partner-report (CN: n = 19; MCI: n = 10)		0.26	0.18	0.47	0.009*	0.15	0.53	0.13	0.60	0.55	0.10	0.72	0.02
SSPP-IADL	Participant-report (CN: n = 52; MCI: n = 7)		0.20	0.13	0.46	< 0.001*	0.26	0.06	0.38	0.005*	0.16	0.73	0.66	0.16
	Study partner-report (CN: n = 36; MCI: n = 3)		−0.02	0.93	0.48	0.002*	0.03	0.85	0.52	0.001*	−0.50	0.67	−1.00	–

Significant p values ≤ 0.05 (uncorrected) are shown in bold along with the corresponding r values

ADCS ADL-PI Alzheimer’s Disease Cooperative Study activities of daily living prevention instrument, APT Automated Phone Task, ATM automated teller machine, CFAB Czaja Functional Assessment Battery, CN clinically normal, MCI mild cognitive impairment, PCP primary care physician, SSPP-IADL Subjective Study Partner and Participant-reported instrumental activities of daily living

*p values ≤ 0.05 after false discovery rate correction for multiple comparisons