TABLE 1.

Characteristics and parameters of pooled restrictive and permissive urines

Parameter	Restrictive (mean ± S.D.)	Permissive (mean ± S.D.)	p value
Age	36 ± 9	34 ± 7	0.7402
pH	6.87 ± 0.24	5.74 ± 0.61	0.0136
Specific gravity	1.016 ± 0.014	1.008 ± 0.003	0.3033
SCN activitya	7.00 ± 1.79	−0.05 ± 0.13	0.0002

^a SCN activity, as determined in Ref. 14, is equal to the log-scaled ratio of WT UTI89 growth to UTI89ΔentB growth in the presence of 1.5 μm SCN.