Skip to main content

Table 5 Relative risks estimates (hazard ratios) of hospitalization for bronchiolitis in 33+0d-34+6d wGA newborns

From: Risk factors for bronchiolitis hospitalization during the first year of life in a multicenter Italian birth cohort

  Crude HR (95 % CI) Adjusted HR (95 % CI)
  Prenatal Conditions   
Assisted reproductive technology 0.3 (0.1-0.8)  
Prenatal smoke exposure 1.9 (1.1-3.3) 2.0 (1.2-3.5)
  Neonatal Conditions   
Male gender 1.6 (1.1-2.3) 1.6 (1.0-2.7)
Singleton 1.7 (1.1-3.0)  
Apgar in the first 5 min <8 2.2 (1.1-4.9)  
Birth weight in g 1.0 (1.0-1.0)  
Surfactant therapy 3.8 (2.0-7.4) 3.1 (1.6-6.0)
Antibiotic therapy 2.0 (1.1-3.5)  
  Postnatal Conditions   
Presence of siblings ≤10 year 3.8 (2.1-6.6) 3.2 (1.8-5.7)
Residential crowding 3.0 (1.7-5.5) 2.9 (1.6-5.4)
Indoor humidity 1.9 (1.1-3.8)  
Exposure to epidemic season 1.8 (1.0-3.0) 1.8 (1.0-3.3)
  1. wGA = weeks of gestational age; HR = hazard risk; 95 %CI = 95 % confidence interval; yrs = years