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Table 2 Demographic and Clinical Characteristics of Patients with AD

From: Effects of variations in access to care for children with atopic dermatitis

  Medicaid
n = 268,580
Commercial
n = 338,678
P-value
Demographics
 Age, mean ± SD | median 5.1 ± 4.9 | 4.0 5.6 ± 5.2 | 4.0 <0.001*
Age category, n (%)
 0–1 yr 89,336 (33.3) 106,255 (31.4) <0.001*
 2–5 yr 69,980 (26.1) 82,290 (24.3) <0.001*
 6–11 yr 73,713 (27.4) 91,400 (27.0) <0.001*
 12–17 yr 35,551 (13.2) 58,733 (17.3) <0.001*
Male, n (%) 133,153 (49.6) 174,839 (51.6) <0.001*
Comorbidities during the 6-month baseline perioda
Patients with ≥1 selected comorbidity, n (%) 144,397 (53.8) 144,707 (42.7) <0.001*
 Patients with ≥1 atopic comorbidity, n (%) 89,077 (33.2) 88,135 (26.0) <0.001*
  Allergic conjunctivitis 20,170 (7.5) 22,235 (6.6) <0.001*
  Allergic rhinitis 54,665 (20.4) 50,872 (15.0) <0.001*
  Allergic urticaria 1762 (0.7) 3036 (0.9) <0.001*
  Asthma 40,313 (15.0) 33,038 (9.8) <0.001*
  Chronic rhinosinusitis 4593 (1.7) 5100 (1.5) <0.001*
  Eosinophilic esophagitis 140 (0.1) 331 (0.1) <0.001*
  Food allergy 2928 (1.1) 6644 (2.0) <0.001*
  Nasal polyps 65 (0.0) 94 (0.0) 0.395
Patients with ≥ 1 other selected comorbidity, n (%) 82,491 (30.7) 75,381 (22.3) <0.001*
 Anxiety 2890 (1.1) 3724 (1.1) 0.380
 Attention deficit hyperactivity disorder 13,802 (5.1) 6176 (1.8) <0.001*
 Autoimmune disorders 870 (0.3) 1050 (0.3) 0.338
 Bacterial infections 8417 (3.1) 11,590 (3.4) <0.001*
 Depression 4474 (1.7) 2330 (0.7) <0.001*
 Fungal infections 46,418 (17.3) 33,992 (10.0) <0.001*
 Obesity 7382 (2.7) 2875 (0.8) <0.001*
 Sleep disorders 1138 (0.4) 444 (0.1) <0.001*
 Viral infections and disorders 13,350 (5.0) 23,506 (6.9) <0.001*
Provider type on the index visit, n (%)
 Dermatology 8545 (3.2) 63,354 (18.7) <0.001*
  Subsequent dermatology or A/I visit after the index visitb, n (%) 4523 (52.9) 28,523 (45.0) <0.001*
 Allergy/Immunology 7612 (2.8) 31,626 (9.3) <0.001*
  Subsequent dermatology or A/I visit after the index visitb, n (%) 4011 (52.7) 16,050 (50.7) 0.002*
 Pediatrics 67,333 (25.1) 166,009 (49.0) <0.001*
  Subsequent dermatology or A/I visit after the index visitb, n (%) 6667 (9.9) 24,849 (15.0) <0.001*
 Other 185,090 (68.9) 77,689 (22.9) <0.001*
  Subsequent dermatology or A/I visit after the index visitb, n (%) 3752 (2.0) 9392 (12.1) <0.001*
Patients who received ≥ 1 AD treatment during the observation periodc, n (%) 240,648 (89.6) 236,836 (69.9) <0.001*
Duration of observation period (months), mean ± SD | median 36.4 ± 16.7 | 34.4 31.3 ± 15.3 | 27.6 <0.001*
  1. Notes
  2. AD atopic dermatitis, SD standard deviation, A/I allergist/immunologist
  3. aThe baseline period includes the index date. For infants, the baseline period includes up to 6 months of follow-up
  4. bPercentages calculated out of the total number of patients with each provider type on the index date
  5. cPatients considered in the analysis of treatment patterns
  6. *P-value <0.05. P-values were calculated using Chi-square tests for categorical variables, and Wilcoxon Mann-Whitney test for continuous variables