A dichotomous variable is one that can have only two possible values or categories. It is like a choice between two options, such as yes or no, true or false, or present or absent. Full definition
Relative risk (RR) was calculated for dichotomous variables along with 95 % confidence intervals (CIs). (adc.bmj.com)
Because they presented bimodal distributions, the hospitalization and injury outcomes variables were analyzed as dichotomous variables with logistic regressions using the same hierarchical model design. (academic.oup.com)
When dichotomous variables are used, divorce was not associated with any statistically significant change in the psychological well - being of unhappily married adults. (americanvalues.org)