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.
Expense is simply a decrease in the net assets of the entity over an accounting period except for such decreases caused by the distributions to the owners. The first aspect of the definition is quite easy to grasp as the incurring of an expense must reduce the net assets of the company.