128 Chapter 5 Tables Table 1. Characteristics of patients with an antibiotic allergy registration. Cohort of patients with an allergy registration Random selection of 300 allergy registrations Patients (n) 6368 300 Patients with multiple registrations (n) 2034 0 Sex % female (n) 73.1% (4655) 73.3% (220) Age at diagnosis of first antibiotic allergy registration (min-max years) 0-102 (median 51 years, IQR 31-68 years) 0-98 years (median 50 years, IQR 32-67 years) Antibiotic allergy registrations (n) 11,841 (100%) 300 (100%) Penicillins % (n) 45.0% (5323) 61.3% (184) Tetracyclines % (n) 7.7 % (912) 10.0% (30) Nitrofuran derivatives % (n) 10.3% (1224) 16.7% (50) Macrolides % (n) 6.7% (793) 8.0% (24) Fluoroquinolones % (n) 5.4% (641) 4.0% (12) Other % 24.9% (2948) 0 (0) 95% CI, 95% confidence interval; IQR, Interquartile range.
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