Figure 1From: High prevalence of potential biases threatens the interpretation of trials in patients with chronic disease Reporting of aspects of trial design, conduct and analysis. The dot plot shows the proportion of trials in patients with chronic obstructive pulmonary disease (COPD) (49 trials), diabetes (48 trials), heart failure (31 trials) and stroke (33 trials) that reported on important aspects of trial design, conduct and analysis.Back to article page