The baseline characteristics table (Fig 3) is used to describe demographic and baseline characteristics of all participants in the study sample and within each arm or comparison group. A number of default demographic characteristics are provided (ie, age, gender, race, ethnicity, and region of enrollment). At a minimum, the age and gender of the participants need to be reported. Age may be reported using either continuous data (eg, mean age and SD) or categorical data (eg, customized or prespecified categories of “≤ 18 years,” “between 18 and 65 years,” and “≥ 65 years”). In addition, any number of study-specific baseline measures can be reported. Each study-specific characteristic should include a specific title that describes the baseline measure (eg, “prior antihypertensive treatment”) and, if necessary, a more complete baseline measure description (eg, what was measured and how was it measured). Each measure must also include the measure type (eg, number, mean, median) and a measure of dispersion for continuous variables (eg, SD, full range, interquartile range). Unit of measure must be given for the values reported (eg, “mm Hg” for BP).