Table 2.

Spearman Rank Correlation Matrix for Measures of Plasma HIV Viral Load Among 2027 Treatment-Naive HIV-Infected Patients Initiating Combination Antiretroviral Therapy, CFAR Network of Integrated Clinical Systems (CNICS), 2000–2008

	Viremia copy-years	Baseline VL	24-week VL	Most recent VL
Viremia copy-years, copy × y/mL	1
Baseline VL, copies/mL	0.10	1
24-week VL, copies/mL	0.45	0.08	1
Most recent VL, copies/mL	0.50	0.02	0.40	1

Abbreviations: HIV, human immunodeficiency virus; VL, plasma HIV viral load.

For repeat measures (viremia copy-years and most recent VL) the most recent value was used.

All P values for correlations are <.01 except for baseline VL and most recent VL (P = .624).