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Recurrence Rate of Muscle Tension Dysphonia (MTD) in Patients Previously Diagnosed with MTD” Evidence-Based Practice Group Answers to Clinical Questions “Recurrence Rate of Muscle Tension Dysphonia (MTD) in Patients Previously Diagnosed with MTD” A Rapid Systematic Review By WorkSafeBC Evidence-Based Practice Group Dr. Craig Martin Manager, Clinical Services Chair, Evidence-Based Practice Group October 2015 Clinical Services – Worker and Employer Services Recurrence Rate of Muscle Tension Dysphonia (MTD) Among Teachers (or other patients) Previously Diagnosed with MTD i About this report Recurrence Rate of Muscle Tension Dysphonia (MTD) in Patients Previously Diagnosed with MTD Published: October 2015 About the Evidence-Based Practice Group The Evidence-Based Practice Group was established to address the many medical and policy issues that WorkSafeBC officers deal with on a regular basis. Members apply established techniques of critical appraisal and evidence-based review of topics solicited from both WorkSafeBC staff and other interested parties such as surgeons, medical specialists, and rehabilitation providers. Suggested Citation WorkSafeBC Evidence-Based Practice Group, Martin CW. Recurrence Rate of Muscle Tension Dysphonia (MTD) in Patients Previously Diagnosed with MTD. Richmond, BC: WorksafeBC Evidence-Based Practice Group; October 2015. Contact Information Evidence-Based Practice Group WorkSafeBC PO Box 5350 Stn Terminal Vancouver BC V6B 5L5 Email [email protected] Phone 604 279-7417 Toll-free 1 888 967-5377 ext 7417 View other systematic reviews by the EBPG online at: http://worksafebc.com/evidence WorkSafeBC Evidence-Based Practice Group October 2015 www.worksafebc.com/evidence Recurrence Rate of Muscle Tension Dysphonia (MTD) Among Teachers (or other patients) Previously Diagnosed with MTD 1 Objective To determine the recurrence rate of muscle tension dysphonia (MTD) (among teachers, if any) in patients previously diagnosed with MTD. Methods • A comprehensive systematic literature search was conducted on October 21, 2015 • Literature search was done via the following databases: 1. Commercial medical literature databases, including BIOSIS Previews®, Embase®, MEDLINE®, MEDLINE In-Process & Other Non-Indexed Citations®, MEDLINE Daily Update® and OLDMEDLINE®, that are available through OVID® platform/interface. 2. US CDC National Institute for Occupational Safety and Health, NIOSHTIC-2®, database. • The searches were done from the inception date of each database to October 21, 2015. • The first literature searches on the OVID® platform were done by employing combination keywords of: 1. (muscle tension dysphonia) AND ((recurrence rate) OR (recurrent rate)). No published study was identified through this search. 2. (muscle tension dysphonia) AND (recurrence OR recurrent). Five(137-141) published studies were identified through this search. Upon examination on the titles and abstracts of these studies(137- 141), none were thought to be relevant to answer our question. 3. (muscle tension dysphonia). One hundred and thirty-six(1-136) published studies were identified through this search. Upon examination on the titles and abstracts of these one hundred and thirty-six published studies, five(1,35,41,61,120) were thought to be relevant and were retrieved in full for further appraisal. WorkSafeBC Evidence-Based Practice Group October 2015 www.worksafebc.com/evidence Recurrence Rate of Muscle Tension Dysphonia (MTD) Among Teachers (or other patients) Previously Diagnosed with MTD 2 • The second literature search was done on the US CDC NIOSHTIC-2® database, by employing combination keywords of: (muscle tension dysphonia). No published study was identified through this search. • No limitations, such as on date or language of publication, were employed in this review. • A manual search was also conducted on references of the articles that were fully retrieved. Four(142-145) published studies were identified and were retrieved in full for further appraisal. Results • Overall, nine(1,35,41,61,120, 142-145) studies were retrieved and appraised in full. However, none of these studies provided any data on the recurrence rate of MTD including among teachers. Summary • At present, there is no published study providing data on the recurrence rate of MTD, specifically amongst teachers. WorkSafeBC Evidence-Based Practice Group October 2015 www.worksafebc.com/evidence Recurrence Rate of Muscle Tension Dysphonia (MTD) Among Teachers (or other patients) Previously Diagnosed with MTD 3 References 1. Altman K.W.; Atkinson, C., and Lazarus, C. Current and emerging concepts in muscle tension dysphonia: A 30-month review. Journal. of Voice. 19 (2) (pp 261- 267), 2005. Date of Publication: June 2005. 2. Andrade D.F.; Heuer, R.; Hockstein N.E.; Castro, E.; Spiegel J.R., and Sataloff R.T. The frequency of hard glottal attacks in patients with muscle tension dysphonia, unilateral benign masses and bilateral benign masses. Journal. of Voice. 14 (2) (pp 240-246), 2000. Date of Publication: 2000. 3. Arunachalam, R.; Boominathan, P., and Mahalingam, S. Clinical voice analysis of carnatic singers. Journal. of Voice. 28 (1) (pp 128.e1-128.e9), 2014. 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