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Table 2 Data for drug allergy studies 2001 to 2010

From: Accuracy in diagnosis of allergy to β-lactams

Group 2001 to
2005
2006 to
2010
Total Percentage
Penicillins 676 (76) 1,329 (75) 2,025 (151) 7.4
   Skin prick test 676 (10) 1,329 (08) (18)  
   Intradermal test 676 (62) 1,329 (50) (112)  
   Challenge 604 (4) 1,271 (17) (21)  
Cephalosporins 24 (2) 160 (3) 184 (5) 2.7
   Skin prick test 24 (2) 160 (2) (4)  
   Challenge 22 (0) 158 (1) (1)  
Othersa 82 (1) 38 (2) 120 (3) 2.5
   Skin prick test 82 (1) 38 (1) (2)  
   Challenge 81 (0) 37 (1) (1)  
Total 782 1,527 2,309 (159) 6.9
  1. Data presented as total number of patients (number of patients diagnosed positive). Symptoms were not limited only to the skin (urticaria, erythema, angioedema), but also included confusion, collapse, unconsciousness, hypotension, diaphoresis, vomiting, presyncope, dyspnoea, stridor, wheeze, chest/throat tightness, nausea/vomiting, and abdominal pain. aIncluded carbapenems (imipinem, meropenem) and monobactams (aztreonam).