In medical research, cross-sectional studies differ from case-control studies in that they aim to provide data on the entire population under study, whereas case-control studies typically include only individuals with a specific characteristic, with a sample, often a tiny minority, of the rest of the population.
(redirected from Variable Expense) Also found in: Dictionary, Wikipedia. A cost that is directly proportional to the volume of output produced. When production is zero, the variable cost is equal to zero. A cost to a person or business that varies over time according to a number of factors.
Hyponyms (each of the following is a kind of expense): incidental; incidental expense; minor expense ((frequently plural) an expense not budgeted or not specified). travel expense ((frequently plural) expenses incurred by an employee in the performance of the job and usually reimbursed by the employer).