Table 1. Clinical characteristics and laboratory findings of elderly and non-elderly women with community-onset non-obstructive acute pyelonephritis caused by Enterobacteriaceae.

Values are presented as median (interquartile range) or number (%).

APN, acute pyelonephritis.

^aMann-Whitney U test.

^bPearson chi-square test or Fisher exact test.

^cUnderactive bladder not requiring catheterization or urological interventional procedures.

^dDenominators were the number of patients whose data were available in each group.