Table 1.
Background characteristics of the study population, by gender
| Males (n = 68) | Females (n = 69) | |||||
|---|---|---|---|---|---|---|
| n | Mean | 95% CI | n | Mean | 95% CI | |
| Age (years) | 68 | 24.8 | 12.7; 59.4 | 69 | 33.5 | 13.5; 64.8 |
| Average number of allergies to common foods | 68 | 1.5 | 1; 3 | 69 | 1.5 | 1; 3 |
| Average number of allergies to other foodsa | 68 | 1.6 | 0; 4 | 69 | 1.7 | 0; 4 |
| Time since worst reaction (years) | 65 | 5.3 | 0.4; 15 | 59 | 5.0 | 0.2; 15 |
| Males (n = 68) | Females (n = 69) | |||||
|---|---|---|---|---|---|---|
| n | Percent | 95% CI | n | Percent | 95% CI | |
| By age category (years) | ||||||
| < 18 | 39 | 57.4 | 44.8; 69.3 | 18 | 26.1 | 16.3; 38.1 |
| 18–39 | 16 | 23.5 | 14.1; 35.4 | 25 | 36.2 | 25.0; 48.7 |
| ≥ 40 | 13 | 19.1 | 10.6; 30.5 | 26 | 37.7 | 26.3; 50.2 |
| Allergies to common foodsb | ||||||
| Cow’s milk | 40 | 58.8 | 46.2; 70.6 | 35 | 50.7 | 38.4; 63.0 |
| Hen’s egg | 43 | 63.2 | 50.7; 74.6 | 42 | 60.9 | 48.3; 72.4 |
| Wheat | 20 | 29.4 | 19.0; 41.7 | 25 | 36.2 | 25.0; 48.7 |
| Allergies to other foodsa | ||||||
| Peanuts/tree nuts | 44 | 64.7 | 52.2; 75.9 | 45 | 65.2 | 52.8; 76.3 |
| Fish/shellfish | 23 | 33.8 | 22.8; 46.2 | 23 | 33.3 | 22.4; 45.7 |
| Soy | 11 | 16.2 | 8.4; 27.1 | 13 | 18.8 | 10.4; 30.1 |
| Sesame | 7 | 10.3 | 4.2; 20.1 | 3 | 4.3 | 0.9; 12.2 |
| Fruits/vegetables | 26 | 38.2 | 26.7; 50.8 | 31 | 44.9 | 32.9; 57.4 |
| Self-reported symptomsb | ||||||
| Oral | 66 | 97.1 | 89.8; 99.6 | 66 | 95.7 | 87.8; 99.1 |
| Rhinoconjunctivitis | 38 | 55.9 | 43.3; 67.9 | 38 | 55.1 | 42.6; 67.1 |
| Dermatological | 45 | 55.9 | 43.3; 67.9 | 45 | 55.1 | 42.6; 67.1 |
| Gastrointestinal | 41 | 60.3 | 47.7; 72.0 | 56 | 81.2 | 69.9; 89.6 |
| Lower respiratory | 52 | 76.5 | 64.6; 85.9 | 51 | 73.9 | 61.9; 83.7 |
| Cardiovascular/neurological | 24 | 35.3 | 24.1; 47.8 | 26 | 37.7 | 26.3; 50.2 |
| Epinephrine auto-injector prescription | 47 | 69.1 | 56.7; 79.8 | 37 | 53.6 | 41.2; 65.7 |
aIncludes participant-perceived or doctor-diagnosed allergies to other foods
bNon-mutually exclusive categories. Percentages reflect the proportion of respondents with a particular characteristic (type of food allergy, symptom) in relation to the total number of males/females. As such, column percentages exceed 100%