Table 1.

Comparison Of Demographics Across Study Groups

	Control n=232	Target - no AD n=64	Target - AD n=17
Age	78.8 (4.7)	82.3 (6.1) +	84.0 (5.1) +
Male (%)	37.1	35.9	58.8
Caucasian (%)	89.7	82.8	76.5
Education, years	15.2 (2.9)	13.6 (2.7) +	13.8 (3.0)
APOE4 (%)	24.3	24.1	60.0+
Depressive symptoms (%)	4.1	6.7	6.7
Exercise ≥ 3 times/week (%)	71.9	67.2	64.7
Cardiovascular disease (%)	22.4	32.8	29.4
Cerebrovascular disease (%)	11.2	9.4	5.9
PTA, better ear	22.9 (8.7)	27.5 (8.3) +	28.6 (8.8) +
PTA, worse ear	27.1 (9.3)	32.4 (8.5) +	34.3 (9.8) +
WRS, better ear	96.1 (4.4)	95.1 (5.4)	93.9 (4.3) *
WRS, worse ear	91.7 (6.0)	90.2 (6.4)	86.1 (6.9) +
CASI Total Score	96.6 (2.7)	85.5 (4.1) +	80.1 (8.0) +
CASI STM Subscore	11.4 (0.8)	8.5 (2.0) +	6.4 (2.2) +

^*p<.05

⁺p<.01: Comparing group to controls

AD = Alzheimer's Diease

PTA = pure-tone average of thresholds at 0.5, 1.0, and 2.0 kHz.

WRS = word recognition score using CID lists at most tolerable loudness.

CASI = Cognitive Abilities Screening Instrument.

STM = short-term memory subscale.