Skip to main content
Fig. 3 | BMC Infectious Diseases

Fig. 3

From: Validation of CD4+ T-cell and viral load data from the HIV-Brazil Cohort Study using secondary system data

Fig. 3

Final sample size flowchart. (1) no linkage code with National HIV/AIDS register surveillance; (2) no data available for CD4+ T-cell count or HIV viral load assessment during clinical follow-up; or (3) no data available for CD4+ T-cell count or viral load after initiating cART. Analysis 1 refers to descriptive statistics including mean, median, standard deviation (SD) and interquartile range (IQR) and proportions (%) for the ten first quantitative measures of CD4+ T-cell counts and categorized viral loads (above or below assay lower limit) after cART; analysis 2 including Pearson correlation coefficient and Bland-Altman agreement analysis for quantitative measures of lowest CD4+ T-cell count and log of highest viral load before cART; and analysis 3 is a Kappa coefficient agreement for categorized measures of lowest CD4+ T-cell count before cART and highest viral load before cART

Back to article page