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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Neuropsychology. 2011 Sep;25(5):645–654. doi: 10.1037/a0023792

Table 2.

HIV Disease Characteristics and Medical Comorbidities in the HIV+ Sample (n=126)

Variable Total HIV+ (n=126) Younger HIV+ (n=89) Older HIV+ (n=37) p
HIV Disease Characteristics
 HIV Infection Duration (years)a,e 15 [7, 21] 12 [6, 20] 17 [9, 21] 0.05
 Current CD4 (cells/ml)b,e 535 [326, 779] 547 [357, 814] 448 [226, 660] 0.07
 Nadir CD4 (cells/ml) 140 [42, 302] 199 [54, 350] 70 [28, 204] 0.009
 Plasma HIV RNA (log10)b,e 2 [2, 2] 2 [2, 2] 2 [2, 2] 0.47
 CSF HIV RNA (log10)c,e 2 [2, 2] 2 [2, 2] 2 [2, 2] 0.71
 Disease Stage
  AIDS (%) 60.3 55.1 73.0 0.06
   CDC A 42.1 44.9 35.1
   CDC B 23.8 25.8 18.9
   CDC C 34.1 29.2 46.0
  Immunosuppressed (%) 57.9 51.7 73.0 0.03
 Medication Status 0.75
  cART (%) 82.5 82 83.8
  Non-cART ART (%) 1.6 1.1 2.7
  No Current ART 10.3 10.1 10.8
  ART Naïve (%) 5.6 6.7 2.7
  CPE Rankd,e 1.5 [1, 2] 1.5 [1, 2] 1.5 [1, 2] 0.83
Medical Comorbidities
 Hepatitis C Co-infection (%)b 12.6 8.1 24.3 0.02
 Vascular Risk (%)f 17.5 14.6 24.3 0.21
  Hypertension (%)g 11.9 11.2 13.5 0.77
  Hypercholesterolemia (%)g 4.0 3.4 5.4 0.63
  Diabetes Mellitus Type II (%)g 4.0 2.3 8.1 0.15

Note: p-values based on chi-square or Fisher’s exact test and Wilcoxon rank sums test for between-group differences; Immunosuppressed = nadir CD4 < 200; cART = combined antiretroviral therapy; CPE Rank = CNS Penetration-Effectiveness Rank;

a–d

data were available only for a subset of the total HIV+ sample, as follows:

a

n=121,

b

n=124,

c

n=88;

d

n = 106;

e

data presented as medians and interquartile ranges (IQR);

f

vascular risk was defined as having one or more of the cardiovascular conditions listed above percentages;

g

percentages reflect those with current diagnosis