Most reported drug allergy among indviduals aged 50-59 years, with disproportionately higher incidence of newly reported drug allergy above 40
The age distribution of reported drug allergy in comparison to non-allergic individuals (i.e. those without any reported drug allergy), is shown in Figure 3. Most drug allergies were reported among individuals in the 50-59 year age group (106,249, 19.2%); and more than half of all drug allergies (377,004, 68.2%) were reported among individuals at or above the age of 40. There were disproportionately fewer individuals with reported drug allergy below 40, compared to the age distribution of non-allergic individuals (4.3% vs 14.7%, p<0.001 for 0-9 years; 4.1% vs 9.3%, p<0.001 for 10-19 years; 9.2% vs 13.5%, p<0.001 for 20-29 years; 14.2% vs 15.3%, p<0.001 for 30-39 years). On the contrary, there were disproportionately more reported drug allergies among individuals ages above 40 compared to non-allergic individuals (16.7% vs 15.5%, p<0.001 for 40-49 years; 19.2% vs 13.9%, p<0.001 for 50-59 years; 15.0% vs 8.6%, p<0.001 for 60-69 years; 10.9% vs 6.0%, p<0.001 for 70-79 years; 5.4% vs 2.7%, p<0.001 for 80-89 years; 1.0% vs 0.5%, p<0.001 for 90 years or above).