baseline characteristics

baseline characteristics

The demographic, clinical and other objective data collected for each participant at the beginning of a clinical trial before intervention. Randomised controlled trials aim to compare groups of participants that differ only with respect to the intervention (treatment); while proper random assignment prevents selection bias, it does not guarantee that the groups are equivalent at baseline—e.g., any differences in baseline characteristics are the result of chance rather than bias. The study groups should be compared at baseline for important demographic and clinical characteristics.
References in periodicals archive ?
Demographics and baseline characteristics were comparable between groups.
Her goal was to identify any baseline characteristics that might predict a persistent course.
Our aim was to study, the baseline characteristics and outcome in term of median survival of DLBCL patients with CNS relapse.
Their creatinine and other baseline characteristics were measured and then repeated after 48 hours.
A comparison of the subgroups with no comorbidities and those with two or more showed several important and statistically significant differences in their baseline characteristics.
Using National Health and Nutritional Examination Survey (NHANES) III data collected from more than 16,000 Americans who were followed for up to 23 years, medical student Mustafa Chopan and Professor of Medicine Benjamin Littenberg, MD, examined the baseline characteristics of the participants according to hot red chili pepper consumption.
Baseline characteristics were similar between groups, with no significant differences in frequency or severity of hot flashes before intervention.
Baseline characteristics, including age, degree of hypospadias, type and laterality of inguinal pathology, operative time, and surgical outcomes, were collected.
The baseline characteristics of the subjects enrolled in this study were similar to those enrolled in prior IPF randomised controlled studies conducted by other pharmaceutical companies, namely ASCEND and INPULSIS.
Men who had been circumcised since the prior survey and those who were still uncircumcised were identified from the 2008-2009 and 2010-2011 surveys, and their baseline characteristics were drawn from the 2006-2008 and 2008-2009 surveys, respectively.

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