In urinary catheterization, a catheter (hollow tube) is inserted into the bladder to drain or collect urine. There are two main types of urinary catheterization: indwelling catheterization and clean intermittent catheterization (CIC). In this type of catheterization, one end of the catheter remains inside the bladder.
Prevalence is expressed as a ratio in which the number of events is the numerator and the population at risk is the denominator. See also rate. prevalent, adj. Epidemiology. (1) The number of people with a specific condition or attribute at a specified time divided by the total number of people in the population.
In contrast, the incidence proportion can be calculated as 16 â 2,100 = 7.6 cases per 1,000 population during the four-year period, or an average of 1.9 cases per 1,000 per year (7.6 divided by 4 years).