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Table 1 Pre-index demographic and clinical characteristics

From: Association of RSV-related hospitalization and non-compliance with Palivizumab among commercially insured infants: a retrospective claims analysis

Demographic   Total Compliant Non-compliant p-value
   (N = 5,003) (N = 1,912) (N = 3,091)  
Gender
Male n 2,738 1,046 1,692  
  % 54.73 54.71 54.74 0.982
Birth Number
All stillborn siblings n 25 9 16  
  % 0.5 0.47 0.52 0.819
Single birth n 2,857 1,049 1,808  
  % 57.11 54.86 58.49 0.012
Twin n 1,427 599 828  
  % 28.52 31.33 26.79 <0.001
Multiple birth n 256 115 141  
  % 5.12 6.01 4.56 0.023
Other n 4 1 3  
  % 0.08 0.05 0.1 0.586
Not available n 434 139 295  
  % 8.67 7.27 9.54 0.005
Clinical Characteristics
Low birth weight (<2500 g) n 3,337 1,337 2,000  
  % 66.7 69.93 64.7 <0.001
<33 wGA n 1,895 755 1,140  
  % 37.8 39.5 36.9 0.065
33-36 wGA n 2,201 854 1,347  
  % 44 44.7 43.6 0.452
NICU
NICU hospitalization n 3,830 1,523 2,307  
  % 86.79 88.19 85.89 0.028
NICU hospitalization length n 4,413 1,727 2,686  
  mean 15.79 15.93 15.7 0.714
  SD 20.38 20.23 20.48  
  median 8 8 8  
Birth Hospitalization
Length of birth hospitalization n 4,413 1,727 2,686  
  mean 25.4 26.15 24.92 0.062
  SD 21.44 20.98 21.72  
  median 19.00 20.00 18.00  
Comorbidity
Immunodeficiency state n 23 3 20  
  % 0.46 0.16 0.65 0.013
Trisomy 21 n 119 44 75  
  % 2.38 2.3 2.43 0.778
Intraventricular hemorrhage n 397 158 239  
  % 7.94 8.26 7.73 0.499
Necrotizing enterocolitis n 114 35 79  
  % 2.28 1.83 2.56 0.095
Hydrocephalus n 56 19 37  
  % 1.12 0.99 1.2 0.507
Periventricular leukomalacia n 54 21 33  
  % 1.08 1.1 1.07 0.919
Retinopathy of prematurity n 1,206 452 754  
  % 24.11 23.64 24.39 0.545
Sensorineural hearing loss n 66 20 46  
  % 1.32 1.05 1.49 0.183
Severe neuromuscular disorders n 127 48 79  
  % 2.54 2.51 2.56 0.921
Cerebral palsy n 12 3 9  
  % 0.24 0.16 0.29 0.345
Cystic fibrosis n 60 30 30  
  % 1.2 1.57 0.97 0.059
CMV n 8 0 8  
  % 0.16 0 0.26 0.026
Chromosomal syndrome n 168 58 110  
  % 3.36 3.03 3.56 0.316
Congenital anomalies of the airways n 192 65 127  
  % 3.84 3.4 4.11 0.205
Pre-index home medical equipment n 1,449 548 901  
  % 28.96 28.66 29.15 0.712
Post-index home medical equipment n 1,115 430 685  
  % 22.29 22.49 22.16 0.786
Oxygen use n 392 144 248  
  % 7.84 7.53 8.02 0.529