Fig. 2From: The validity of the SF-12 and SF-6D instruments in people living with HIV/AIDS in KenyaThe ROC curves of SF-12 derived PCS and MCS using CD4 and viral load thresholds. Caption: The signal was weaker in this comparison, partly because of the more general definitions of severity. However, both PCS and MCS showed some signal by CD4 severity threshold comparisonBack to article page