BACKGROUND AND OBJECTIVE: Pertussis is a serious and preventable @entity221 often necessitating hospitalization. The objective was to describe national trends in pediatric @entity5695 hospitalizations and resource utilization and factors associated with increased length of stay (LOS). METHODS: This was a cross-sectional analysis of the 1997 to 2009 Healthcare Cost and Utilization Project Kids' Inpatient Databases. We examined pediatric hospitalizations of @entity1 (0-18 years) with a diagnosis of @entity5695 . Primary outcomes were hospitalizations, LOS, and charges. Weighted linear regression was used to evaluate trends in resource utilization. Multivariate logistic regression was used to determine factors associated with prolonged LOS. RESULTS: @entity1 0 to 6 months old accounted for nearly 90% of pediatric @entity5695 hospitalizations. Hospitalizations in public payers increased from 50% in 1997 to 67.4% in 2009 (P < .01). Among @entity1 with complex chronic conditions (CCCs), @entity5695 hospitalizations increased from 9.4% in 1997 to 16.8% in 2009 (P < .01). Mean LOS for pediatric @entity5695 hospitalizations decreased from 5.40 days in 1997 to 5.28 days in 2009 (P < .01), whereas those for @entity1 with CCCs increased from 8.86 days in 1997 to 9.25 days in 2009 (P < .01). Mean adjusted charges for pediatric @entity5695 hospitalizations rose from  14 520 in 1997 to  22 278 in 2009 (P < .01). For all study years, neonates and @entity1 with CCCs had greater odds of prolonged LOS. CONCLUSIONS: Young @entity1 and publicly insured @entity1 account for a disproportionate number of @entity5695 -related hospitalizations. @entity1 with CCCs are increasingly contributing to hospitalizations and resource utilization attributable to @entity5695 . As new vaccine recommendations are implemented, targeted interventions are warranted to increase preventive efforts in these vulnerable populations.

Trends in hospitalizations and resource utilization for pediatric XXXX .

@entity1 :: ('9606', 'Species') :: ['children', 'Patients', 'patients', 'infants', 'Infants'] @entity221 :: ('MESH:D005334', 'Disease') :: ['childhood illness'] @entity5695 :: ('MESH:D014917', 'Disease') :: ['pertussis']
@entity5695 :: (MESH:D014917,Disease) :: ['pertussis']
