@article{c76492dfc27346da952a964cd9db7113,
title = "Bias due to withdrawal in long-term randomised trials in COPD: evidence from the TORCH study",
abstract = "Randomised controlled trials (RCTs) are considered the least biased method for evaluating drug efficacy and several large long-term RCTs in chronic obstructive pulmonary disease have been published. These usually include drugs with symptomatic benefits and have significant withdrawal rates.",
keywords = "Albuterol, Androstadienes, Bias (Epidemiology), Bronchodilator Agents, Drug Combinations, Humans, Observation, Patient Dropouts, Placebos, Proportional Hazards Models, Pulmonary Disease, Chronic Obstructive, Randomized Controlled Trials as Topic",
author = "J{\o}rgen Vestbo and Anderson, {Julie Anne} and Calverley, {Peter Mark Anthony} and Bartolom{\'e} Celli and Ferguson, {Gary Thomas} and Christine Jenkins and Yates, {Julie Carol} and Jones, {Paul Wyatt}",
note = "{\textcopyright} 2010 Blackwell Publishing Ltd.",
year = "2011",
doi = "10.1111/j.1752-699X.2010.00198.x",
language = "English",
volume = "5",
pages = "44--9",
journal = "Clinical Respiratory Journal",
issn = "1752-6981",
publisher = "Wiley-Blackwell Munksgaard",
number = "1",
}