Construct Validity and Factor Structure of the Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale in a Multi-National Study of African, South East Asian and South American College Students

• Bizu Gelaye ,

  * E-mail: bgelaye@hsph.harvard.edu

  Affiliation Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States of America

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• Vitool Lohsoonthorn,

  Affiliation Department of Preventive and Social Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand

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• Somrat Lertmeharit,

  Affiliations Department of Preventive and Social Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand, College of Public Health Sciences, Chulalongkorn University, Bangkok, Thailand

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• Wipawan C. Pensuksan,

  Affiliation School of Nursing, Walailak University, Nakhon Si Thammarat, Thailand

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• Sixto E. Sanchez,

  Affiliation Universidad San Martin de Porres, Lima, Peru

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• Seblewengel Lemma,

  Affiliation Addis Continental Institute of Public Health, Addis Ababa, Ethiopia

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• Yemane Berhane,

  Affiliation Addis Continental Institute of Public Health, Addis Ababa, Ethiopia

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• Xiaotong Zhu,

  Affiliation Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States of America

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• Juan Carlos Vélez,

  Affiliation Centro de Rehabilitación Club de Leones Cruz del Sur, Punta Arenas, Chile

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• Clarita Barbosa,

  Affiliation Centro de Rehabilitación Club de Leones Cruz del Sur, Punta Arenas, Chile

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• Asterio Anderade,

  Affiliation Centro de Rehabilitación Club de Leones Cruz del Sur, Punta Arenas, Chile

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• Mahlet G. Tadesse,

  Affiliations Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States of America, Department of Mathematics & Statistics, Georgetown University, Washington, DC, United States of America

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• Michelle A. Williams

  Affiliation Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States of America

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