Abstract / Summary
Background: HIV and stroke are major contributors to disability in sub-Saharan Africa, yet their combined impact on cognitive and motor functioning remains poorly understood. Botswana has a high prevalence of HIV and rising stroke incidence, underscoring the need to characterize impairment to inform neurorehabilitation. Objective: To examine differences in cognitive performance, motor function, and activities of daily living between adults living with HIV only and those living with both HIV and stroke in Botswana. Methods: Thirty-three adults (19 HIV only; 14 HIV/ stroke) completed standardized cognitive (e.g. MoCA and Digit Symbol Coding [DSC]), and motor assessments (such as Box and Block Test [BBT], Grooved Pegboard [GPB], Grip Strength [GS], 10-Meter Walk Test [10MWT], Timed Up and Go [TUG]), and ADL measures (such as Barthel Index, Lawton IADL). Group comparisons used Wilcoxon rank-sum tests. Impairment was determined using both international z-score norms and Botswana-specific cutoffs from a prior cohort study. Results: Cognitive impairment was evident in both groups, but DSC z-scores were worse in the HIV/stroke vs HIV only group (median= -2.71 vs -1.34, p=0.015). Gross motor function showed deficits in the HIV/stroke group, including lower dominant-hand BBT performance (median z-score -2.79 vs. -1.75; p=0.008). Fine motor dexterity was markedly reduced in the HIV/stroke group, with GPB dominant-hand median z-scores of -4.26 vs. -1.40 (p=0.038) and non-dominant-hand impairment rates of 100% vs. 63.2% (p=0.043). Non-dominant GS was weaker in the HIV/stroke group (100% impaired vs. 47.4%; p=0.0014). Lower-limb performance was substantially worse, including TUG (median z-score -3.63 vs. 0.10; p=0.0001) and 10MWT (median z-score -5.36 vs. -2.47; p=0.0025). ADL scores were also lower in the HIV/stroke group compared to both Barthel and Lawton (p=0.002). Conclusions: HIV alone is associated with cognitive and motor impairment, with the addition of stroke producing significantly greater deficits across all motor domains. These findings demonstrate the need to integrate structured neurorehabilitation into HIV clinical care in Botswana.