Relevant patient characteristics in the non-mecillinam treatment group and univariate analysis of risk factors for treatment failurea.

a Data are presented as the absolute number of patients unless specifically noted.b To quantify the number of UTIs for each patient in the preceding year, the number of prescriptions of three antimicrobial agents–trimethoprim, mecillinam, and nitrofurantoin–were counted. In Norway, these agents are first choices for UTI treatment and are not commonly used for other infections.c OR is per increase of one defined daily dose (DDD). IQR = inter-quartile range.d Missing information on one patient.e The other group consist of patients treated with (numbers of patients in parentheses): trimethoprim-sulfamethoxazole (16), intravenous treatment (9), amoxicillin (5), cefalexin (3), pivmecillinam and nitrofurantoin (1) and pivmecillinam and trimethoprim (1).