Figure 1.

Relationship between log₁₀ of the viral load and time infected with HIV (A) Unadjusted, (B) Adjusted for Schistosoma status, ln of CAA and CD4 counts. (A) shows the crude relationship between log₁₀ of viral load and duration of HIV-1 infection. A fractional polynomial was fitted to the data. The black line represents the predicted log₁₀ of viral load after applying the resulting function to the data. The grey area represents the 95% confidence limits around the fitted values. The black dots represent the residuals. (B) shows the relationship between log₁₀ of viral load and duration of HIV-1 infection after adjustment for Schistosoma infection status, ln of CAA and CD4 counts using a fractional polynomial. The black line represents the predicted log₁₀ of viral load after applying the resulting function to the data. The grey area represents the 95% confidence limits around the fitted values. The black dots represent the residuals.