Relevant patient characteristics in the 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 used for other infections.c OR is per increase of one defined daily dose (DDD) (One DDD = 600 mg of pivmecillinam), IQR = inter-quartile range.d MIC = minimal inhibitory concentration.e Missing information on two patients.