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Benzodiazepines and risk of pneumonia in schizophrenia: a nationwide case–control study

Objectives To investigate the relationship between benzodiazepine and risk of developing pneumonia in patients with schizophrenia, whose benzodiazepine dosage and usage frequency was higher than that of the general population. Methods We conducted a nested case–control study to assess the associatio...

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Published in:Psychopharmacology 2018-11, Vol.235 (11), p.3329-3338
Main Authors: Cheng, Sheng-Yun, Chen, Wen-Yin, Liu, Hsing-Cheng, Yang, Tien-Wei, Pan, Chun-Hung, Yang, Shu-Yu, Kuo, Chian-Jue
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container_title Psychopharmacology
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description Objectives To investigate the relationship between benzodiazepine and risk of developing pneumonia in patients with schizophrenia, whose benzodiazepine dosage and usage frequency was higher than that of the general population. Methods We conducted a nested case–control study to assess the association between benzodiazepine use and pneumonia among patients with schizophrenia. By using the Taiwan National Health Insurance Research Database, we identified a schizophrenia cohort comprising 34,929 patients during 2000–2010. Within the schizophrenia cohort, 2501 cases of pneumonia and 9961 matched control patients (1:4 ratio) were identified. Benzodiazepine exposure was categorized by drug, treatment duration, and daily dose. Conditional logistic regression models were used to examine the association between benzodiazepine exposure and the risk of pneumonia. Results The current use (within 30 days) of midazolam led to the highest pneumonia risk (adjusted risk ratio = 6.56, P  
doi_str_mv 10.1007/s00213-018-5039-9
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Methods We conducted a nested case–control study to assess the association between benzodiazepine use and pneumonia among patients with schizophrenia. By using the Taiwan National Health Insurance Research Database, we identified a schizophrenia cohort comprising 34,929 patients during 2000–2010. Within the schizophrenia cohort, 2501 cases of pneumonia and 9961 matched control patients (1:4 ratio) were identified. Benzodiazepine exposure was categorized by drug, treatment duration, and daily dose. Conditional logistic regression models were used to examine the association between benzodiazepine exposure and the risk of pneumonia. Results The current use (within 30 days) of midazolam led to the highest pneumonia risk (adjusted risk ratio = 6.56, P  &lt; 0.001), followed by diazepam (3.43, P  &lt; 0.001), lorazepam (2.16, P  &lt; 0.001), and triazolam (1.80, P  = 0.019). Furthermore, nearly all the benzodiazepines under current use had a dose-dependent effect on pneumonia risk. The risk of pneumonia was correlated with the affinities of γ-aminobutyric acid A α1, α2, and α3 receptors. Conclusions Benzodiazepines had a dose-dependent relationship with pneumonia in patients with schizophrenia. The differences in risk and mechanism of action of the individual drugs require further investigation. Clinicians should be aware of the early signs of pneumonia in patients with schizophrenia receiving benzodiazepines.</description><identifier>ISSN: 0033-3158</identifier><identifier>EISSN: 1432-2072</identifier><identifier>DOI: 10.1007/s00213-018-5039-9</identifier><identifier>PMID: 30232530</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adult ; Benzodiazepines ; Benzodiazepines - administration &amp; dosage ; Benzodiazepines - adverse effects ; Biomedical and Life Sciences ; Biomedicine ; Case-Control Studies ; Cohort Studies ; Databases, Factual - trends ; Diazepam ; Dose-Response Relationship, Drug ; Exposure ; Female ; Health risk assessment ; Humans ; Insurance Claim Reporting - trends ; Lorazepam ; Male ; Mental disorders ; Midazolam ; Middle Aged ; Neurosciences ; Original Investigation ; Patients ; Pharmacology/Toxicology ; Pneumonia ; Pneumonia - chemically induced ; Pneumonia - epidemiology ; Psychiatry ; Regression analysis ; Risk Factors ; Schizophrenia ; Schizophrenia - drug therapy ; Schizophrenia - epidemiology ; Taiwan - epidemiology ; Triazolam</subject><ispartof>Psychopharmacology, 2018-11, Vol.235 (11), p.3329-3338</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2018</rights><rights>Psychopharmacology is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-731e69f5febd7a40e615bd20e39842b4e63f27a735d4e2f86bdebbace00298f13</citedby><cites>FETCH-LOGICAL-c372t-731e69f5febd7a40e615bd20e39842b4e63f27a735d4e2f86bdebbace00298f13</cites><orcidid>0000-0002-2773-1335</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30232530$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cheng, Sheng-Yun</creatorcontrib><creatorcontrib>Chen, Wen-Yin</creatorcontrib><creatorcontrib>Liu, Hsing-Cheng</creatorcontrib><creatorcontrib>Yang, Tien-Wei</creatorcontrib><creatorcontrib>Pan, Chun-Hung</creatorcontrib><creatorcontrib>Yang, Shu-Yu</creatorcontrib><creatorcontrib>Kuo, Chian-Jue</creatorcontrib><title>Benzodiazepines and risk of pneumonia in schizophrenia: a nationwide case–control study</title><title>Psychopharmacology</title><addtitle>Psychopharmacology</addtitle><addtitle>Psychopharmacology (Berl)</addtitle><description>Objectives To investigate the relationship between benzodiazepine and risk of developing pneumonia in patients with schizophrenia, whose benzodiazepine dosage and usage frequency was higher than that of the general population. Methods We conducted a nested case–control study to assess the association between benzodiazepine use and pneumonia among patients with schizophrenia. By using the Taiwan National Health Insurance Research Database, we identified a schizophrenia cohort comprising 34,929 patients during 2000–2010. Within the schizophrenia cohort, 2501 cases of pneumonia and 9961 matched control patients (1:4 ratio) were identified. Benzodiazepine exposure was categorized by drug, treatment duration, and daily dose. Conditional logistic regression models were used to examine the association between benzodiazepine exposure and the risk of pneumonia. Results The current use (within 30 days) of midazolam led to the highest pneumonia risk (adjusted risk ratio = 6.56, P  &lt; 0.001), followed by diazepam (3.43, P  &lt; 0.001), lorazepam (2.16, P  &lt; 0.001), and triazolam (1.80, P  = 0.019). Furthermore, nearly all the benzodiazepines under current use had a dose-dependent effect on pneumonia risk. The risk of pneumonia was correlated with the affinities of γ-aminobutyric acid A α1, α2, and α3 receptors. Conclusions Benzodiazepines had a dose-dependent relationship with pneumonia in patients with schizophrenia. The differences in risk and mechanism of action of the individual drugs require further investigation. Clinicians should be aware of the early signs of pneumonia in patients with schizophrenia receiving benzodiazepines.</description><subject>Adult</subject><subject>Benzodiazepines</subject><subject>Benzodiazepines - administration &amp; dosage</subject><subject>Benzodiazepines - adverse effects</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Case-Control Studies</subject><subject>Cohort Studies</subject><subject>Databases, Factual - trends</subject><subject>Diazepam</subject><subject>Dose-Response Relationship, Drug</subject><subject>Exposure</subject><subject>Female</subject><subject>Health risk assessment</subject><subject>Humans</subject><subject>Insurance Claim Reporting - trends</subject><subject>Lorazepam</subject><subject>Male</subject><subject>Mental disorders</subject><subject>Midazolam</subject><subject>Middle Aged</subject><subject>Neurosciences</subject><subject>Original Investigation</subject><subject>Patients</subject><subject>Pharmacology/Toxicology</subject><subject>Pneumonia</subject><subject>Pneumonia - chemically induced</subject><subject>Pneumonia - epidemiology</subject><subject>Psychiatry</subject><subject>Regression analysis</subject><subject>Risk Factors</subject><subject>Schizophrenia</subject><subject>Schizophrenia - drug therapy</subject><subject>Schizophrenia - epidemiology</subject><subject>Taiwan - epidemiology</subject><subject>Triazolam</subject><issn>0033-3158</issn><issn>1432-2072</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kMtq3TAQhkVoSE4uD9BNEGTTjduR5IucXXJo00Agm3bRlZCtcaPUlhzJJpyz6jv0Dfsk1cFpCoFqMyB984_mI-Qtg_cMoPoQATgTGTCZFSDqrN4jK5YLnnGo-BuyAhAiE6yQh-QoxgdIJ5f5ATkUwAUvBKzItyt0W2-s3uJoHUaqnaHBxh_Ud3R0OA_eWU2to7G9t1s_3gdMFxdUU6cn692TNUhbHfH3z1-td1PwPY3TbDYnZL_TfcTT53pMvn76-GX9Obu9u75ZX95mraj4lFWCYVl3RYeNqXQOWLKiMRxQ1DLnTY6l6HilK1GYHHkny8Zg0-gW0-617Jg4Ju-W3DH4xxnjpAYbW-x77dDPUXHGy5pJLmVCz1-hD34OLv0uUVCDgKrYUWyh2uBjDNipMdhBh41ioHbe1eJdJe9q513VqefsOXluBjQvHX9FJ4AvQExP7juGf6P_n_oHyXiO0A</recordid><startdate>20181101</startdate><enddate>20181101</enddate><creator>Cheng, Sheng-Yun</creator><creator>Chen, Wen-Yin</creator><creator>Liu, Hsing-Cheng</creator><creator>Yang, Tien-Wei</creator><creator>Pan, Chun-Hung</creator><creator>Yang, Shu-Yu</creator><creator>Kuo, Chian-Jue</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QR</scope><scope>7RV</scope><scope>7TK</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88G</scope><scope>8AO</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>M2M</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PSYQQ</scope><scope>Q9U</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-2773-1335</orcidid></search><sort><creationdate>20181101</creationdate><title>Benzodiazepines and risk of pneumonia in schizophrenia: a nationwide case–control study</title><author>Cheng, Sheng-Yun ; 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Methods We conducted a nested case–control study to assess the association between benzodiazepine use and pneumonia among patients with schizophrenia. By using the Taiwan National Health Insurance Research Database, we identified a schizophrenia cohort comprising 34,929 patients during 2000–2010. Within the schizophrenia cohort, 2501 cases of pneumonia and 9961 matched control patients (1:4 ratio) were identified. Benzodiazepine exposure was categorized by drug, treatment duration, and daily dose. Conditional logistic regression models were used to examine the association between benzodiazepine exposure and the risk of pneumonia. Results The current use (within 30 days) of midazolam led to the highest pneumonia risk (adjusted risk ratio = 6.56, P  &lt; 0.001), followed by diazepam (3.43, P  &lt; 0.001), lorazepam (2.16, P  &lt; 0.001), and triazolam (1.80, P  = 0.019). Furthermore, nearly all the benzodiazepines under current use had a dose-dependent effect on pneumonia risk. The risk of pneumonia was correlated with the affinities of γ-aminobutyric acid A α1, α2, and α3 receptors. Conclusions Benzodiazepines had a dose-dependent relationship with pneumonia in patients with schizophrenia. The differences in risk and mechanism of action of the individual drugs require further investigation. Clinicians should be aware of the early signs of pneumonia in patients with schizophrenia receiving benzodiazepines.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>30232530</pmid><doi>10.1007/s00213-018-5039-9</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-2773-1335</orcidid></addata></record>
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subjects Adult
Benzodiazepines
Benzodiazepines - administration & dosage
Benzodiazepines - adverse effects
Biomedical and Life Sciences
Biomedicine
Case-Control Studies
Cohort Studies
Databases, Factual - trends
Diazepam
Dose-Response Relationship, Drug
Exposure
Female
Health risk assessment
Humans
Insurance Claim Reporting - trends
Lorazepam
Male
Mental disorders
Midazolam
Middle Aged
Neurosciences
Original Investigation
Patients
Pharmacology/Toxicology
Pneumonia
Pneumonia - chemically induced
Pneumonia - epidemiology
Psychiatry
Regression analysis
Risk Factors
Schizophrenia
Schizophrenia - drug therapy
Schizophrenia - epidemiology
Taiwan - epidemiology
Triazolam
title Benzodiazepines and risk of pneumonia in schizophrenia: a nationwide case–control study
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