Estimated regressions of average total cost per DALY averted of antiretroviral therapy in 45 facilities in Zambia.

Note: **p<0.05,
*p<0.1,+p<0.2. p-values are given in parentheses to the right of the coefficients in columns (1), (2) and (4).
cValues of p for “Early Start” are the significance level at which the joint hypothesis can be rejected that neither baseline CD4 nor proportion of patients initiating at WHO stage IV influences the dependent variable.