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. Author manuscript; available in PMC: 2015 Mar 30.
Published in final edited form as: HIV Clin Trials. 2012 Nov-Dec;13(6):324–334. doi: 10.1310/hct1306-324

Table 3.

Comparison of HIV-related characteristics between high and low functioning groups by each assessment tool.

Characteristic Functional Status Group by Assessment Tool
Fried’s Frailty Phenotype P value Short Physical Performance Battery P value 400-m walk P value
High
N=167 (%)
Low
N=27 (%)
High
N=223 (%)
Low
N=26 (%)
High
N=166 (%)
Low
N=11 (%)
Years since HIV diagnosis (mean, standard error) 14.5 (0.6) 15.5 (1.5) 0.54 14.2 (0.5) 16.2 (1.6) 0.25 14.4 (0.6) 17.9 (2.3) 0.17
History of AIDS 105 (63) 21 (78) 0.19 143 (64) 18 (69) 0.67 97 (58) 7 (64) 0.77
Prior opportunistic infection 60 (36) 10 (37) 1.0 74 (33) 7 (27) 0.67 55 (33) 2 (18) 0.35
Lipoatrophy 32 (19) 5 (19) 1.0 48 (22) 7 (27) 0.62 32 (19) 2 (18) 1.0
Risk for HIV acquisition
 MSMa 113 (68) 19 (70) 0.83 148 (66) 11 (42) 0.02 118 (71) 5 (45) 0.09
 Intravenous drug use 21 (13) 3 (11) 1.0 35 (16) 4 (15) 1.0 22 (13) 2 (18) 0.65
 Heterosexual 45 (27) 4 (15) 0.24 56 (25) 9 (35) 0.35 41 (25) 3 (27) 1.0
 Other 6 (4) 2 (7) 0.60 9 (4) 4 (15) 0.04 7 (4) 2 (18) 0.1
CD4+ T-cells/μL (geometric mean, 95% CIb) 556 (514–601) 459 (344–613) 0.20 516 (477–559) 448 (345–580) 0.29 517 (469–570) 542 (376–782) 0.79
Current CD4+ lymphocyte count <200 cells/μL 3 (2) 3 (11) 0.04 15 (7) 3 (12) 0.41 11 (7) 0 (0) 0.63
Nadir CD4+ T-cells/μL (geometric mean, 95% CIb) 88 (69–112) 58 (34–99) 0.15 91 (74–111) 75 (44–128) 0.50 99 (78–124) 112 (51–249) 0.73
Viral load “blip” 23 (14) 4 (15) 1.0 33 (15) 3 (12) 0.78 20 (12) 0 (0) 0.37
VACSc Index Score (mean, standard error) 15.1 (0.9) 23.8 (3.8) 0.03 15.8 (0.9) 28.2 (3.4) 0.001 15.8 (1.0) 27.6 (6.0) 0.08
Current use of:
 NRTId 161 (97) 25 (93) 0.25 217 (97) 26 (100) 0.63 162 (98) 11 (100) 1.0
 NNRTIe 72 (43) 13 (48) 0.68 99 (44) 12 (46) 1.0 76 (46) 7 (64) 0.35
 Protease inhibitor 82 (49) 17 (63) 0.22 115 (52) 11 (42) 0.41 83 (50) 3 (27) 0.21
 Integrase inhibitor 37 (22) 4 (15) 0.46 48 (22) 5 (19) 0.81 33 (20) 2 (18) 1.0
 Entry inhibitor 2 (1) 0 (0) 1.0 1 (<1) 0 (0) 1.0 0 (0) 0 (0) 1.0
Any (current/prior) use of:
 NRTId 165 (99) 25 (93) 0.05 221 (99) 25 (96) 0.28 163 (98) 10 (91) 0.23
 NNRTIe 118 (71) 21 (78) 0.50 156 (70) 18 (69) 1.0 119 (72) 9 (82) 0.52
 Protease inhibitor 117 (70) 23 (85) 0.16 163 (73) 20 (77) 0.82 119 (72) 7 (64) 0.73
 Integrase inhibitor 37(22) 6 (22) 1.0 48 (22) 8 (31) 0.32 34 (20) 1 (9) 0.47
 Entry inhibitor 8 (5) 2 (7) 0.63 7 (3) 1 (4) 1.0 4 (2) 0 (0) 1.0
a

. Men whom have sex with other men,

b

. confidence interval,

c

. Veterans Aging Cohort Study,

d

. nucleoside reverse transcriptase inhibitor,

e

. non-nucleoside reverse transcriptase inhibitor