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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: J Allergy Clin Immunol Pract. 2018 Aug 1;6(5):1534–1544.e5. doi: 10.1016/j.jaip.2018.05.038

Table 4.

Percent of subjects with comorbidities, stratified by age at enrollment and by race.

Total Patients <11
years of age
Patients 11–
17 years of
age
Patients ≥18
years of age
Age
comparison
%
among
whites
%
among non-
whites
Race
comparison
N
Total#
%
Cases
N
Total#
%
Cases
N
Total#
%
Cases
N
Total#
%
Cases
P-Value* N
Total#
%
Cases
N
Total#
%
Cases
P-Value
Gastrointestinal disorders
GERD 705 54.2 345 55.7 189 49.7 171 56.1 0.36 620 55.0 85 48.2 0.25
Barrett’s esophagus 705 0.4 345 0.0 189 0.5 171 1.2 0.08 620 0.5 85 0.0 1.00
Celiac disease 705 2.0 345 2.3 189 2.6 171 0.6 0.34 620 2.1 85 1.2 1.00
Irritable bowel syndrome 705 6.5 345 3.2 189 3.7 171 16.4 < 0.0001 620 7.1 85 2.4 0.11
Crohn’s disease 671 0.6 319 0.0 184 1.1 168 1.2 0.08 592 0.7 79 0.0 1.00
Ulcerative colitis 671 1.0 319 0.3 184 1.1 168 2.4 0.07 592 1.0 79 1.3 0.59
Other gastrointestinal disorders* 671 5.4 319 5.3 184 3.8 168 7.1 0.39 592 5.9 79 1.3 0.11
Allergic disorders
Allergic conjunctivitis 705 31.2 345 29.3 189 30.2 171 36.3 0.26 620 30.2 85 38.8 0.13
Allergic rhinitis 705 60.3 345 60.9 189 60.8 171 58.5 0.85 620 60.3 85 60.0 1.00
Asthma 705 45.4 345 48.4 189 49.2 171 35.1 0.007 620 42.9 85 63.5 0.0004
Atopic dermatitis 705 46.4 345 61.2 189 36.0 171 28.1 < 0.0001 620 43.5 85 67.1 <0.0001
Urticaria 705 26.2 345 32.2 189 22.8 171 18.1 0.001 620 26.1 85 27.1 0.90
Angioedema 705 13.2 345 14.8 189 12.7 171 10.5 0.41 620 12.6 85 17.6 0.23
Food allergy 704 67.0 345 75.9 188 62.8 171 53.8 < 0.0001 620 65.6 84 77.4 0.04
Food anaphylaxis 695 27.1 341 29.3 186 32.8 168 16.1 0.0005 611 26.5 84 31.0 0.43
Drug anaphylaxis 705 10.8 345 7.5 189 13.8 171 14.0 0.02 620 11.3 85 7.1 0.35
Latex allergy 704 6.8 345 5.5 188 6.9 171 9.4 0.27 619 6.1 85 11.8 0.06
Infectious/immunological disorders
Sinusitis 705 28.5 345 27.5 189 29.1 171 29.8 0.84 620 29.4 85 22.4 0.20
Pneumonia 705 24.5 345 22.0 189 27.5 171 26.3 0.29 620 24.4 85 25.9 0.79
Immunodeficiency 705 2.6 345 2.3 189 3.7 171 1.8 0.50 620 2.9 85 0.0 0.15
Autoimmune disease 705 4.7 345 3.5 189 2.6 171 9.4 0.007 620 5.3 85 0.0 0.02
Neurological/developmental disorders
Developmental delay 705 11.2 345 18.0 189 7.9 171 1.2 < 0.0001 620 10.8 85 14.1 0.36
Prematurity 705 6.8 345 9.9 189 3.7 171 4.1 0.008 620 6.0 85 12.9 0.03
Depression/anxiety 705 15.5 345 9.3 189 19.0 171 24.0 < 0.0001 620 16.8 85 5.9 0.006
Autism/behavioral disorder 705 6.2 345 7.8 189 8.5 171 0.6 0.0003 620 6.3 85 5.9 1.00
Mitochondrial disorder 705 0.4 345 0.3 189 1.1 171 0.0 0.32 620 0.5 85 0.0 1.00
Other systemic problems
Failure to thrive 705 21.3 345 31.9 189 18.0 171 3.5 < 0.0001 620 20.3 85 28.2 0.12
Surgical history
Tympanostomy tube placement 705 19.6 345 24.3 189 20.1 171 9.4 0.0001 620 19.5 85 20.0 0.88
Sinus surgery 705 3.4 345 3.8 189 3.2 171 2.9 0.89 620 3.5 85 2.4 0.76
Fundoplication 705 0.7 345 0.9 189 0.5 171 0.6 1.00 620 0.8 85 0.0 1.00
Gastrostomy tube placement 705 5.8 345 7.8 189 6.3 171 1.2 0.003 620 5.3 85 9.4 0.14
#

Number of subjects with data available.

*

The most frequent self-reported gastrointestinal disorders included: Constipation (n=6), gastritis (n=3), ulcer (n=4), gluten intolerance/possible gluten intolerance (n=2), Hirschprung’s disease (n=2), and small intestine bacterial overgrowth (n=2).

*

P-value is the result of comparison of all 3 age groups.