Table 1.

Odds ratios for switching treatment based on data-adaptive fit of treatment mechanism (Petersen et al. (2007a))

Covariate	Odds Ratio
Current diagnosis with an opportunistic disease	1.21
Number of protease inhibitor drugs experienced	1.11
Most recent HIV RNA level undetectable	0.44
Percent average adherence (per 10%)	0.92
Most recent CD4 T cell count (per 100 CD4 T cells)	0.92
Nadir CD4 T cell count (per 100 CD4 T cells)	1.06
Most recent HIV RNA level more than one month prior	0.90
Age (per 5 years)	0.80