Table 2.

Results of linear mixed effect models.

Variable		Time estimate (slope, β)			Age×group P value			Time×group P value
		HIV+	Topa	Bottomb	HIV+	Top	Bottom	HIV+	Top	Bottom
CATsc
	Gap detection threshold (ms)	–4.22 ×10–4	–7.01 ×10–4	–5.33×10–4	Refd	.54	.45	Ref	.03	.43
	HINTe (SRTf)	–4.68×10–4	–5.61 ×10–4	–4.10×10–4	Ref	.53	.16	Ref	.17	.89
	TDTg (mean SNRh)	–8.93×10–4	–9.01×10–4	2.16×10–4	Ref	.32	.92	Ref	.99	<.001
MoCAi (total score)		15.5×10–4	12.5×10–4	–1.96×10–4	Ref	.19	.99	Ref	.56	.003
TOVAj
	Response time (mean)	5.70×10–4	4.91×10–4	2.19×10–4	Ref	.63	.06	Ref	.47	.007
	ExGaussiank μ (mean response time)	3.55×10–4	1.01×10–4	0.942×10–4	Ref	.47	.23	Ref	.08	.048
	Attention comparison score	4.50×10–4	3.42×10–4	4.08×10–4	Ref	.72	.29	Ref	.09	.13
Cogstate battery tests
	Groton maze learning (moves per second)	1.05×10–4	0.721×10–4	0.511×10–4	Ref	.84	.69	Ref	.18	.046
	Groton maze learning (total errors)	13.8×10–4	11.3×10–4	6.15×10–4	Ref	.24	.16	Ref	.45	.03
	One Card Learning (accuracy)	3.86×10-4	2.95×10-4	0.761×10-4	Ref	>.99	.71	Ref	.78	.08
	One Back Test (reaction time)	13.2×10-4	9.12×10-4	10.9×10-4	Ref	.62	.18	Ref	.06	.16
	Continuous paired associate learning (accuracy)	4.44×10-4	2.98×10-4	4.05×10-4	Ref	.28	.08	Ref	.16	.07
Global executive scorel		9.61×10-4	8.62×10-4	7.31×10-4	Ref	.47	.21	Ref	.30	.02
Global speed scorem		3.04×10-4	3.00×10-4	0.511×10-4	Ref	.35	.07	Ref	.89	.006
Global CAT score		3.59×10-4	4.21×10-4	0.540×10-4	Ref	.45	.23	Ref	.58	.01

^aTop: HIV-positive individuals in the top 20% of combined central auditory test scores.

^bBottom: HIV-positive individuals in the bottom 20% of combined central auditory test scores.

^cCAT: central auditory test.

^dReference for comparison.

^eHINT: Hearing In Noise Test.

^fSRT: speech reception threshold.

^gTDT: Triple Digit Test.

^hSNR: signal-to-noise ratio.

ⁱMoCA: Montreal Cognitive Assessment.

^jTOVA: Tests of Variables of Attention.

^kExGaussian: exponentially modified Gaussian distribution.

^lCombination of speed-of-processing subtests.

^mCombination of executive functioning subtests.