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Table 1 Characteristics of patients in the different sample series

From: Decision tree for accurate infection timing in individuals newly diagnosed with HIV-1 infection

Sample series Patients (n) Samples (n) Samples/ patient Male (%) Age at diagnosis mean (IQR) Subtype B (%) CD4 count cells/mm3 mean (IQR) Log viral load mean (IQR)
Longitudinal 42 237 4 to 15 85.7 38 (33 - 44) 70.7 612 (461 - 709)a 5.18 (4.58 - 5.75)a
Special populations ART treated 12 12 1 50.0 45 (38 - 55) NA 694 (429 - 998) <1.30
Elite controllers 11 11 1 27.3 49 (38 - 57) NA 933 (769 - 1081) <1.30
Slow progressors 6 6 1 50.0 41 (36 - 50) NA 599 (374 - 883) 2.45 (2.23 - 2.72)
Advanced infection 19 19 1 73.7 39 (34 - 45) 58.8 42 (14 - 61) 5.40 (4.98 - 5.72)
Cross-sectional 566 566 1 78.3 39 (30 - 47) 53.0 443 (264 - 566) 4.71 (4.26 - 5.22)
  1. Abbreviations: ART combination antiretroviral therapy, IQR interquartile range, n number, NA not available
  2. aUsing only the result of the first sample collected from each patient