Rates of asymptomatic bacteria in the urine increase with age from two to seven percent in women of child bearing age to as high as 50% in elderly women in care homes.
Količina asimptomatskih bakterija u urinu povećava se sa starenjem, s dva do sedam posto u žena plodne dobi do čak 50% u starijih žena smještenih u domovima za skrb.