The prevalence of primary dystonia: a systematic review and meta-analysis.
Identifieur interne : 000B73 ( Main/Exploration ); précédent : 000B72; suivant : 000B74The prevalence of primary dystonia: a systematic review and meta-analysis.
Auteurs : Thomas D. Steeves [Canada] ; Lundy Day ; Jonathan Dykeman ; Nathalie Jette ; Tamara PringsheimSource :
- Movement disorders : official journal of the Movement Disorder Society [ 1531-8257 ] ; 2012.
English descriptors
- KwdEn :
- MESH :
- epidemiology : Blepharospasm, Dystonic Disorders, Torticollis.
- Adult, Aged, Aged, 80 and over, Female, Humans, Incidence, Male, Middle Aged, Prevalence, Young Adult.
Abstract
Dystonia is a hyperkinetic movement disorder characterized by sustained muscle contractions that produce repetitive movements and abnormal postures. Specific information on the prevalence of dystonia has been difficult to establish because the existing epidemiological studies of the condition have adopted different methodologies for case ascertainment, resulting in widely differing reported prevalence. Medline and Embase databases were searched using terms specific to dystonia for studies of incidence, prevalence, and epidemiology. All population-based studies reporting an incidence and/or prevalence of primary dystonia were included. Sixteen original studies were included in our systematic review. Fifteen studies reported the prevalence of dystonia, including 12 service-based and three population-based studies. We performed a meta-analysis on the results of the service-based studies, and were able to combine data on the prevalence of several dystonia subtypes. From these studies, we calculated an overall prevalence of primary dystonia of 16.43 per 100,000 (95% confidence interval [CI]: 12.09-22.32). The prevalence of dystonia reported in the three population-based studies appears higher than that reported in the service-based studies. Only 1 of the 16 studies reported an incidence of cervical dystonia. This corresponded to a corrected incidence estimate of 1.07 per 100,000 person-years (95% CI: 0.86-1.32). Despite numerous studies on the epidemiology of dystonia, attempting to determine an accurate prevalence of the condition for health services planning remains a significant challenge. Given the methodological limitations of the existing studies, our own prevalence estimate of primary dystonia likely underestimates the true prevalence of the condition.
DOI: 10.1002/mds.25244
PubMed: 23114997
Affiliations:
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Steeves</name><affiliation wicri:level="4"><nlm:affiliation>Department of Medicine, University of Toronto, Toronto, Ontario, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Medicine, University of Toronto, Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Day, Lundy" sort="Day, Lundy" uniqKey="Day L" first="Lundy" last="Day">Lundy Day</name></author><author><name sortKey="Dykeman, Jonathan" sort="Dykeman, Jonathan" uniqKey="Dykeman J" first="Jonathan" last="Dykeman">Jonathan Dykeman</name></author><author><name sortKey="Jette, Nathalie" sort="Jette, Nathalie" uniqKey="Jette N" first="Nathalie" last="Jette">Nathalie Jette</name></author><author><name sortKey="Pringsheim, Tamara" sort="Pringsheim, Tamara" uniqKey="Pringsheim T" first="Tamara" last="Pringsheim">Tamara Pringsheim</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2012">2012</date><idno type="doi">10.1002/mds.25244</idno><idno type="RBID">pubmed:23114997</idno><idno type="pmid">23114997</idno><idno type="wicri:Area/PubMed/Corpus">000B96</idno><idno type="wicri:Area/PubMed/Curation">000B96</idno><idno type="wicri:Area/PubMed/Checkpoint">000B81</idno><idno type="wicri:Area/Ncbi/Merge">003866</idno><idno type="wicri:Area/Ncbi/Curation">003866</idno><idno type="wicri:Area/Ncbi/Checkpoint">003866</idno><idno type="wicri:Area/Main/Merge">000B74</idno><idno type="wicri:Area/Main/Curation">000B73</idno><idno type="wicri:Area/Main/Exploration">000B73</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">The prevalence of primary dystonia: a systematic review and meta-analysis.</title><author><name sortKey="Steeves, Thomas D" sort="Steeves, Thomas D" uniqKey="Steeves T" first="Thomas D" last="Steeves">Thomas D. Steeves</name><affiliation wicri:level="4"><nlm:affiliation>Department of Medicine, University of Toronto, Toronto, Ontario, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Medicine, University of Toronto, Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Day, Lundy" sort="Day, Lundy" uniqKey="Day L" first="Lundy" last="Day">Lundy Day</name></author><author><name sortKey="Dykeman, Jonathan" sort="Dykeman, Jonathan" uniqKey="Dykeman J" first="Jonathan" last="Dykeman">Jonathan Dykeman</name></author><author><name sortKey="Jette, Nathalie" sort="Jette, Nathalie" uniqKey="Jette N" first="Nathalie" last="Jette">Nathalie Jette</name></author><author><name sortKey="Pringsheim, Tamara" sort="Pringsheim, Tamara" uniqKey="Pringsheim T" first="Tamara" last="Pringsheim">Tamara Pringsheim</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="eISSN">1531-8257</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Aged, 80 and over</term><term>Blepharospasm (epidemiology)</term><term>Dystonic Disorders (epidemiology)</term><term>Female</term><term>Humans</term><term>Incidence</term><term>Male</term><term>Middle Aged</term><term>Prevalence</term><term>Torticollis (epidemiology)</term><term>Young Adult</term></keywords><keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Blepharospasm</term><term>Dystonic Disorders</term><term>Torticollis</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Aged, 80 and over</term><term>Female</term><term>Humans</term><term>Incidence</term><term>Male</term><term>Middle Aged</term><term>Prevalence</term><term>Young Adult</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Dystonia is a hyperkinetic movement disorder characterized by sustained muscle contractions that produce repetitive movements and abnormal postures. Specific information on the prevalence of dystonia has been difficult to establish because the existing epidemiological studies of the condition have adopted different methodologies for case ascertainment, resulting in widely differing reported prevalence. Medline and Embase databases were searched using terms specific to dystonia for studies of incidence, prevalence, and epidemiology. All population-based studies reporting an incidence and/or prevalence of primary dystonia were included. Sixteen original studies were included in our systematic review. Fifteen studies reported the prevalence of dystonia, including 12 service-based and three population-based studies. We performed a meta-analysis on the results of the service-based studies, and were able to combine data on the prevalence of several dystonia subtypes. From these studies, we calculated an overall prevalence of primary dystonia of 16.43 per 100,000 (95% confidence interval [CI]: 12.09-22.32). The prevalence of dystonia reported in the three population-based studies appears higher than that reported in the service-based studies. Only 1 of the 16 studies reported an incidence of cervical dystonia. This corresponded to a corrected incidence estimate of 1.07 per 100,000 person-years (95% CI: 0.86-1.32). Despite numerous studies on the epidemiology of dystonia, attempting to determine an accurate prevalence of the condition for health services planning remains a significant challenge. Given the methodological limitations of the existing studies, our own prevalence estimate of primary dystonia likely underestimates the true prevalence of the condition.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Ontario</li></region><settlement><li>Toronto</li></settlement><orgName><li>Université de Toronto</li></orgName></list><tree><noCountry><name sortKey="Day, Lundy" sort="Day, Lundy" uniqKey="Day L" first="Lundy" last="Day">Lundy Day</name><name sortKey="Dykeman, Jonathan" sort="Dykeman, Jonathan" uniqKey="Dykeman J" first="Jonathan" last="Dykeman">Jonathan Dykeman</name><name sortKey="Jette, Nathalie" sort="Jette, Nathalie" uniqKey="Jette N" first="Nathalie" last="Jette">Nathalie Jette</name><name sortKey="Pringsheim, Tamara" sort="Pringsheim, Tamara" uniqKey="Pringsheim T" first="Tamara" last="Pringsheim">Tamara Pringsheim</name></noCountry><country name="Canada"><region name="Ontario"><name sortKey="Steeves, Thomas D" sort="Steeves, Thomas D" uniqKey="Steeves T" first="Thomas D" last="Steeves">Thomas D. 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