Table 2.

Incidence density of urinary tract infection per person year at risk and bacterial strains causing infection during 12 month follow up

Urinary tract infection	Cranberry	Lactobacillus	Control
Incidence density	0.45*	0.91	0.81
No (%) caused by E coli†	15 (71)	31 (79)	32 (84)
No (%) caused by other bacteria†	6 (29)	8 (21)	6 (16)

^*Difference between the cranberry and control groups (0.36 episodes/person year) was significant (95% confidence interval 0.03 to 0.68, P=0.03). 

^†Differences between the intervention groups and the control group were not significant (P=0.24-0.59).