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Table 1 Comparing demographic and clinical characteristics of participants with and without accidental exposures

From: Accidental exposures to peanut in a large cohort of Canadian children with peanut allergy

  With AE n = 429 Without AE n = 1512 Difference (95% CI)
Male, % 62.0 62.2 −0.2 (−5.4, 5.0)
Ethnicity, % Caucasian 86.5 88.5 −2.0 (−5.6, 1.6)
Age at diagnosis,* years, mean (SD) 2.3 (2.1) 2.1 (1.7) 0.2 (0, 0.4)
Age at initial questionnaire, years, mean (SD) 6.2 (3.9) 7.1 (4.0) −0.9 (−1.3, −0.4)
Disease duration at initial questionnaire, years, mean (SD) 3.9 (3.7) 5.0 (4.0) −1.1 (−1.5, −0.7)
Observation interval, years, mean (SD) 2.6 (1.4) 2.3 (1.4) 0.3 (0.2, 0.4)
Age ≥ 13 years at initial questionnaire, % 8.9 9.9 −1.0 (−4.1, 2.1)
Recruited through allergy associations, % 32.2 37.0 −4.8 (−9.8, 0.2)
Personal history of eczema, % 51.3 51.7 −0.4 (−5.7, 5.0)
Personal history of asthma, % 45.7 49.9 −4.2 (−9.5, 1.2)
Personal history of rhinitis, % 33.6 35.6 −2.0 (−7.1, 3.1)
Personal history of other food allergy, % 45.9 51.9 −6.0 (−11.3, −0.7)
Initial reaction moderate/severe, **% 58.9 69.1 −10.2 (−15.4, −5.0)
Initial reaction severe, % 11.2 14.5 −3.3 (−6.8, 0.2)
Attending a school prohibiting peanut, % 80.3 80.2 0.1 (−4.4, 4.6)
Single parent household, % 8.4 6.6 1.8 (−1.2, 4.8)
Age of parents, years, mean (SD) 38.6 (5.8) 39.2 (5.7) −0.7 (−1.3, −0.1)
Mother’s education and work status, %    
Post-secondary education 87.4 88.7 −1.3 (−4.8, 2.3)
Completed university 60.7 61.0 −0.3 (−5.5, 5.0)
Currently employed 68.7 70.1 −1.5 (−6.6, 3.7)
Father’s education and work status, %    
Post-secondary education 78.0 79.5 −1.5 (−6.0, 3.0)
Completed university 51.6 53.8 −2.2 (−7.6, 3.3)
Currently employed 88.8 91.6 −2.8 (−6.2, 0.7)
  1. *The age of diagnosis of peanut allergy was the earliest of the age of the first reaction or confirmatory testing.
  2. **Mild signs/symptoms: pruritus, urticaria, flushing, rhinoconjunctivitis; moderate: angioedema, throat tightness, gastrointestinal complaints, breathing difficulties other than wheeze; severe: wheeze, cyanosis, circulatory collapse [6,11].