Table 5.

Results of Multiple Linear and Logistic Regressions Examining the Interaction Between Frailty and HIV/Methamphetamine Group on Global Neurocognition and Everyday Functioning

Outcome: global T-score
Predictor variables	Estimate	95% CI	p
Frailty index score	−17.60	−33.62 to −1.58	.018
HIV−/MA− (vs. HIV+/MA+)	1.26	−1.75 to 4.27	.410
HIV+/MA− (vs. HIV+/MA+)	−1.14	−4.12 to 1.83	.448
Frailty index score × HIV−/MA−	7.05	−16.84 to 30.93	.561
Frailty index score × HIV+/MA−	13.25	−9.59 to 36.09	.254

Outcome: IADL dependence
Predictor variables	Logit	95% CI	p
Frailty index score (per 0.10 U change)	0.45	0.07 to 0.83	.021
HIV−/MA− (vs. HIV+/MA+)	−0.84	−1.58 to −0.21	.014
HIV+/MA− (vs. HIV+/MA+)	0.25	−0.33 to 0.83	.398
Frailty index score × HIV−/MA−	−0.42	−10.22 to 1.51	.155
Frailty index score × HIV+/MA−	0.10	−0.36 to 0.58	.680

Bold values indicate p-values significant at <0.05.