Establishing Non-Inferiority of a New Treatment in a Three-Arm Trial: Apply a Step-Down Hierarchical Model in a Papulopustular Acne Study and an Oral Prophylactic Antibiotics Study. International Journal of Statistics in Medical Research, [S. l.], v. 3, n. 1, p. 11–20, 2014. DOI: 10.6000/1929-6029.2014.03.01.3. Disponível em: https://neolifescience.com/index.php/ijsmr/article/view/1581. Acesso em: 16 jan. 2026.