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J Clin Psychiatry. 2017 Feb;78(2):171-176. doi: 10.4088/JCP.15m10262.

High Rates of Psychiatric Comorbidity in Narcolepsy: Findings From the Burden of Narcolepsy Disease (BOND) Study of 9,312 Patients in the United States.

Author information

1
Stanford Center for Sleep Sciences and Medicine, Palo Alto, California, USA.
2
Strategic Health Resources, La Canada, California, USA.
3
Statistics Department, California Polytechnic State University, San Luis Obispo, California, USA.
4
Stanford Sleep Epidemiology Research Center, Stanford University School of Medicine, Palo Alto, California, USA.
5
Sleep Disorders Program, Stanford University, Redwood City, California, USA.
6
450 Broadway St, Pavilion B, 2nd Floor, Redwood City, CA 94063. jedblack@stanford.edu.
7
Sleep Disorders Clinic, Stanford University School of Medicine, Palo Alto, California, USA.
8
Jazz Pharmaceuticals, Palo Alto, California, USA.

Abstract

OBJECTIVE:

To evaluate psychiatric comorbidity patterns in patients with a narcolepsy diagnosis in the United States.

METHODS:

Truven Health Analytics MarketScan Research Databases were accessed to identify individuals ≥ 18 years of age with ≥ 1 ICD-9 diagnosis code(s) for narcolepsy continuously insured between 2006 and 2010 and non-narcolepsy controls matched 5:1 (age, gender, region, payer). Extensive subanalyses were conducted to confirm the validity of narcolepsy definitions. Narcolepsy subjects and controls were compared for frequency of psychiatric comorbid conditions (based on ICD-9 codes/Clinical Classification Software [CCS] level 2 categories) and psychiatric medication use.

RESULTS:

The final population included 9,312 narcolepsy subjects and 46,559 controls (each group, mean age = 46.1 years; 59% female). All categories of mental illness were significantly more prevalent in patients with narcolepsy versus controls, with the highest excess prevalence noted for CCS 5.8 Mood disorders (37.9% vs 13.8%; odds ratio [OR] = 4.0; 95% CI, 3.8-4.2), CCS 5.8.2 Depressive disorders (35.8% vs 13.0%; OR = 3.9; 95% CI, 3.7-4.1), and CCS 5.2 Anxiety disorders (25.1% vs 11.9%; OR = 2.5; 95% CI, 2.4-2.7). Excess prevalence of anxiety and mood disorders (narcolepsy vs controls) was higher in younger age groups versus older age groups. Psychiatric medication usage was higher in the narcolepsy group versus controls in the following categories: selective serotonin reuptake inhibitors (36% vs 17%), anxiolytic benzodiazepines (34% vs 19%), hypnotics (29% vs 13%), serotonin-norepinephrine reuptake inhibitors (21% vs 6%), and tricyclic antidepressants (13% vs 4%) (all P values < .0001).

CONCLUSIONS:

Narcolepsy is associated with significant comorbid psychiatric illness burden and higher psychiatric medication usage compared with the non-narcolepsy population.

PMID:
27835717
DOI:
10.4088/JCP.15m10262
[Indexed for MEDLINE]

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