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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Clin Infect Dis. 2009 Feb 1;48(3):350–361. doi: 10.1086/595888

Table 1.

Baseline characteristics of patients with additional flow cytometry assessment, by baseline CD4+ stratum.

Baseline CD4+ stratum (CD4+ cells/mm3)
Variable 1 (0–50) (n = 110) 2 (51–200) (n = 119) 3 (201–350) (n = 152) 4 (351–500) (n = 124) 5 (>500) (n = 116) All (n = 621) P
Male 97 99 127 100 89 512 .024a
Female 13 20 25 24 27 109
White 47 56 66 62 56 287 .279c
Hispanic 12 20 26 9 16 83
Black 50 41 57 48 43 239
Other 1 2 3 5 1 12
IDU 12 6 15 5 10 48 .485a
No IDU 98 113 137 119 106 573
Age, median years (IQR) 38 (32–45) 37 (31–42) 35 (30–44) 35 (29–41) 36 (28–42) 36 (30–43) .001b
HIV RNA log10, median copies/mL, (IQR) 5.65 (5.26–6.08) 5.38 (4.89–5.86) 4.85 (4.32–5.34) 4.55 (4.12–5.06) 4.34 (3.84–4.81) 4.92 (4.33–5.52) <.001b

NOTE. Data are no. of patients, unless otherwise indicated. Race and ethnicity were self-identified according to the categories. Hispanic ethnicity was reported regardless of race. There was a smaller Hispanic proportion in patients with additional assessment by flow cytometry than those without [31]. IDU, history of or current injection drug use; IQR, interquartile range.

a

By Cochran-Armitage trend test.

b

By Jonckheere-Terpstra test.

c

By Fisher’s exact test.