April 01, 1983 article The need for randomization in the study of intended effects Statistics in Medicine DOI: 10.1002/sim.4780020222 OpenAlex Authors 0 Author list not loaded yet. Cited by 2 stored of 277 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access Instrumental variable analysis to estimate treatment effects: a simulation study showing potential benefits of conditioning on hospital 2022 BMC Medical Research Methodology article Mathematics Advanced Causal Inference Techniques Open access 7 citations Evidence‐based medicine—When observational studies are better than randomized controlled trials 2020 Nephrology article Mathematics Advanced Causal Inference Techniques Open access 89 citations 2 results References 0