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. 2014 Apr 2;9(4):e93039. doi: 10.1371/journal.pone.0093039

Figure 4. Observed (unweighted, dots) and weighted (IPCW-weighted, lines) annual median CD4+ cell counts since start of ART stratified by injection drug use (IDU), hepatitis C co-infection, and AIDS defining illness at the start of ART.

Figure 4

Dashed lines represent important CD4+ cell count thresholds of 200, 350, and 500 cells/μL.