in order to examine the relative frequency of urinary tract infection ( uti ) and bacteriuria among male nursing home patients managed with and without external catheters ( ec ) , we prospectively followed four cohorts of patients ( ec worn continuously , n = 30 ; ec worn at night only , n = 19 ; incontinent without catheter , n = 13 ; and continent , n = 30 ) for a total of 497 patient months at risk .
C0042029
of urinary tract infection
C0004659
bacteriuria