Figure 4From: Modeling AIDS survival after initiation of antiretroviral treatment by Weibull models with changepointsConfidence region based on the inversion of the likelihood ratio test for the Weibull two-changepoint model. The straight line is the 45-degree diagonal. Any points below the diagonal would imply that a second changepoint is located earlier than the first changepoint. No such points were within the confidence region. This figure shows the 95% confidence region for the two-changepoint model.Back to article page