Armour M, Smith CA, Steel KA, Macmillan F The effectiveness of self-care and lifestyle interventions in primary dysmenorrhea: a systematic review and meta-analysis. BMC Complement Altern Med. 2019 Jan 17;19(1):22. doi: 10.1186/s12906-019-2433-8.
Cramer H, Ward L, Saper R, Fishbein D, Dobos G, Lauche R The Safety of Yoga: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Am J Epidemiol. 2015 Aug 15;182(4):281-93. doi: 10.1093/aje/kwv071. Epub 2015 Jun 26. Review.
Fernández-Martínez E, Onieva-Zafra MD, Parra-Fernández ML Lifestyle and prevalence of dysmenorrhea among Spanish female university students. PLoS One. 2018 Aug 10;13(8):e0201894. doi: 10.1371/journal.pone.0201894. eCollection 2018.
Fernández-Martínez E, Onieva-Zafra MD, Parra-Fernández ML The Impact of Dysmenorrhea on Quality of Life Among Spanish Female University Students. Int J Environ Res Public Health. 2019 Feb 27;16(5). pii: E713. doi: 10.3390/ijerph16050713.
Ferrer M, Vilagut G, Monasterio C, Montserrat JM, Mayos M, Alonso J [Measurement of the perceived impact of sleep problems: the Spanish version of the functional outcomes sleep questionnaire and the Epworth sleepiness scale]. Med Clin (Barc). 1999 Sep 11;113(7):250-5. Spanish.
Iacovides S, Avidon I, Baker FC What we know about primary dysmenorrhea today: a critical review. Hum Reprod Update. 2015 Nov-Dec;21(6):762-78. doi: 10.1093/humupd/dmv039. Epub 2015 Sep 7. Review.
Jeter PE, Slutsky J, Singh N, Khalsa SB Yoga as a Therapeutic Intervention: A Bibliometric Analysis of Published Research Studies from 1967 to 2013. J Altern Complement Med. 2015 Oct;21(10):586-92. doi: 10.1089/acm.2015.0057. Epub 2015 Jul 21. Review.
Johns MW A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep. 1991 Dec;14(6):540-5.
Kim SD Yoga for menstrual pain in primary dysmenorrhea: A meta-analysis of randomized controlled trials. Complement Ther Clin Pract. 2019 Aug;36:94-99. doi: 10.1016/j.ctcp.2019.06.006. Epub 2019 Jun 25.
Matthewman G, Lee A, Kaur JG, Daley AJ Physical activity for primary dysmenorrhea: a systematic review and meta-analysis of randomized controlled trials. Am J Obstet Gynecol. 2018 Sep;219(3):255.e1-255.e20. doi: 10.1016/j.ajog.2018.04.001. Epub 2018 Apr
McCall MC, Ward A, Roberts NW, Heneghan C Overview of systematic reviews: yoga as a therapeutic intervention for adults with acute and chronic health conditions. Evid Based Complement Alternat Med. 2013;2013:945895. doi: 10.1155/2013/945895. Epub 2013 May 16.
McGovern CE, Cheung C Yoga and Quality of Life in Women with Primary Dysmenorrhea: A Systematic Review. J Midwifery Womens Health. 2018 Jul;63(4):470-482. doi: 10.1111/jmwh.12729. Epub 2018 Jun 14.
Ross A, Thomas S The health benefits of yoga and exercise: a review of comparison studies. J Altern Complement Med. 2010 Jan;16(1):3-12. doi: 10.1089/acm.2009.0044. Review.
Sherman KJ Guidelines for developing yoga interventions for randomized trials. Evid Based Complement Alternat Med. 2012;2012:143271. doi: 10.1155/2012/143271. Epub 2012 Oct 2.
Ware J Jr, Kosinski M, Keller SD A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Med Care. 1996 Mar;34(3):220-33.
Effect of a Semi-Presence Yoga Program, With Virtual Tutorized Home Tracking, on Dysmenorrhea in University Students: Randomized an Controlled Clinical Trial Protocol.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
