Abstract Details

Title Trend of Cluster Headache Hospitalizations and their Associated Outcomes, a National Four Year Retrospective Review.

Topic Headache

Presentation(s) P5 - Poster Session 5 (5:30 PM-6:30 PM)

Poster/Presentation
Number 13-012

Objective The objective of our study was to evaluate national estimates of incidence of cluster headache and look for associated hospital characteristics and resource utilization.

Background Cluster headache is a widely known primary headache disorder under the trigeminal autonomic cephalgia subtype that is commonly under-diagnosed and associated with debilitating pain. Data regarding its national estimates of in-patient hospitalization is limited but has been perceived to be on the rise.

Design/Methods The Nationwide Inpatient Sample (NIS) from 2008 to 2014 was utilized to identify patients with Cluster headache using ICD9 CM code 339.00-02 in primary diagnosis field, differences between categorical variables were tested using the chi-square test and continuous variables using the student T-test. P values for trends were generated by Cochrane-Armitage test for categorical variables and simple linear regression for continuous variables.

Results We identified 4,144 patients with Cluster headache during our study period (63.9% Male, 61.5% White). We observed a significant increase in the number of patients admitted with a primary diagnosis of cluster headache (relative increase of 282.8%) and upward trends in overall cost of hospitalization with overall cost burden of $23.95 million on USA health care (347.9%). A significant increase was observed in hospitalization with private insurance (relative increase of 92.3%), Caucasian race (relative increase 94.5%), hospitalization in northeast region (relative increase of 12 %), hospitalization in teaching hospitalization (relative increase of 37.2%), emergent admission (increase of 8.1%), and weekend admission (increase of 24%). Duration of mean length of in hospital stay was unchanged during the study period (3.1 days in 2008 and 2014).

Conclusions Cluster headache related hospitalizations are on the rise with an increase in resource utilization without any change in hospital length of stay during recent years. It is important to identify factors associated with an increase in cluster headache related morbidity and resource utilization to improve outcomes.

Authors/Disclosures
Matthew Chung, MD (University of Texas, MD Anderson Cancer Center) PRESENTER	No disclosure on file
Chirag N. Savani, MD (Tampa General Hospital)	No disclosure on file
	No disclosure on file
Tigran Kesayan, MD (VUMC Pain Medicine and Neurology)	Dr. Kesayan has nothing to disclose.
Luiz De Souza, MD (University of South Florida - JAHVAH)	No disclosure on file
Jose R. Rodriguez, MD (University of South Florida - JAHVAH)	No disclosure on file
James R. Ghattas, DO	No disclosure on file
Grace Kim	Mr. Kim has nothing to disclose.
Martin A. Myers, MD (James A Haley VA)	No disclosure on file
Charles W. Brock, MD	No disclosure on file

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