Marginal structural model Longitudinal Studies 4 Models, Statistical 4 statistical analysis 4 statistical model 4 Algorithms 2 Antiretroviral Therapy, Highly Active 2 Bias (Epidemiology) 2 CD4 lymphocyte count 2 Causal inference 2 Causality 2 Clinical Trials as Topic 2 Data Interpretation, Statistical 2 Decision Making 2 Double-robust 2 Drop-out 2 Dynamic regime 2 Dynamic treatment regime 2 HIV Infections 2 Human immunodeficiency virus infection 2 Humans 2 Inverse probability weighted 2 Missing at random 2 Optimal treatment regime 2 Probability 2 Prognosis 2 Research Design 2 Treatment Outcome 2 Value of information 2 algorithm 2