Table 1.

Rate of balloon deflation and sensitivity of urine discoloration for detecting it.

Study	Balloons inserted N	Balloons deflated N (%)	Urine discoloration N (%)	Sensitivity of urine discoloration for balloon deflation
Loffredo et al. 2001 [4]	77	15 (19.4%)	9 (11.6%)	60%
Doldi et al. 2002 [5]	281	8 (2.8%)	5 (1.7%)	62.5%
Francica et al. 2004 [6]	131	18 (13.7%)	11 (8.3%)	61.1%