Figure 4
Panel (A) depicts the coefficient estimates and 95% CI from Eq. (1) at different bandwidths. The data-driven optimal bandwidth for BMI, SBP and DBP is ± 64, ± 40, and ± 40 CD4 cells/μl, respectively. Panel (B) depicts the coefficient estimates and the 95% CIs from estimating Eq. (1) with addition of an quadratic function of the deviation. For comparability, the optimal bandwidth of the linear specification is used. The optimal quadratic bandwidths would be ± 100, ± 80 and ± 85, respectively. Results are robust to the employment of the optimal bandwidth for the quadratic specification.
