Browsing Bergen Open Research Archive by Author "Chan, Ngan Yin"

Now showing items 1-8 of 8

    • Associations between changes in habitual sleep duration and lower self-rated health among COVID-19 survivors: findings from a survey across 16 countries/regions 

      Matsui, Kentaro; Chung, Frances; Bjelajac, Adrijana Koscec; Merikanto, Ilona; Korman, Maria; Mota-Rolim, Sérgio; Cunha, Ana Suely; Bjorvatn, Bjørn; Xue, Pei; Benedict, Christian; Morin, Charles M.; Espie, Colin A.; Landtblom, Anne-Marie; Penzel, Thomas; De Gennaro, Luigi; Holzinger, Brigitte; Hrubos-Strøm, Harald; Leger, Damien; Bolstad, Courtney J.; Nadorff, Michael R.; Plazzi, Giuseppe; Reis, Catia; Chan, Ngan Yin; Wing, Yun Kwok; Yordanova, Juliana; Dauvilliers, Yves; Partinen, Markku; Inoue, Yuichi (Journal article; Peer reviewed, 2023)
      Background Self-rated health (SRH) is widely recognized as a clinically significant predictor of subsequent mortality risk. Although COVID-19 may impair SRH, this relationship has not been extensively examined. The ...

    • Estimation bias and agreement limits between two common self-report methods of habitual sleep duration in epidemiological surveys 

      Korman, Maria; Zarina, Daria; Tkachev, Vadim; Merikanto, Ilona; Bjorvatn, Bjørn; Bjelajac, Adrijana Koscec; Penzel, Thomas; Landtblom, Anne-Marie; Benedict, Christian; Chan, Ngan Yin; Wing, Yun Kwok; Dauvilliers, Yves; Morin, Charles M.; Matsui, Kentaro; Nadorff, Michael; Bolstad, Courtney J.; Chung, Frances; Mota-Rolim, Sérgio; De Gennaro, Luigi; Plazzi, Giuseppe; Yordanova, Juliana; Holzinger, Brigitte; Partinen, Markku; Reis, Cátia (Journal article; Peer reviewed, 2024)
      Accurate measurement of habitual sleep duration (HSD) is crucial for understanding the relationship between sleep and health. This study aimed to assess the bias and agreement limits between two commonly used short HSD ...

    • Evening-types show highest increase of sleep and mental health problems during the COVID-19 pandemic—multinational study on 19 267 adults 

      Merikanto, Ilona; Kortesoja, Laura; Benedict, Christian; Chung, Frances; Cedernaes, Jonathan; Espie, Colin A.; Morin, Charles M.; Dauvilliers, Yves; Partinen, Markku; Gennaro, Luigi De; Wing, Yun Kwok; Chan, Ngan Yin; Inoue, Yuichi; Matsui, Kentaro; Holzinger, Brigitte; Plazzi, Giuseppe; Mota-Rolim, Sérgio Arthuro; Leger, Damien; Penzel, Thomas; Bjorvatn, Bjørn (Journal article; Peer reviewed, 2022)
      Study Objectives Individual circadian type is a ubiquitous trait defining sleep, with eveningness often associated with poorer sleep and mental health than morningness. However, it is unknown whether COVID-19 pandemic has ...

    • Has the COVID-19 Pandemic Traumatized Us Collectively? The Impact of the COVID-19 Pandemic on Mental Health and Sleep Factors via Traumatization: A Multinational Survey 

      Holzinger, Brigitte; Nierwetberg, Franziska; Chung, Frances; Bolstad, Courtney J.; Bjorvatn, Bjørn; Chan, Ngan Yin; Dauvilliers, Yves; Espie, Colin A.; Han, Fang; Inoue, Yuichi; Leger, Damien; Macêdo, Tainá; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Mota-Rolim, Sérgio A.; Partinen, Markku; Plazzi, Giuseppe; Penzel, Thomas; Sieminski, Mariusz; Wing, Yun Kwok; Scarpelli, Serena; Nadorff, Michael R.; De Gennaro, Luigi (Journal article; Peer reviewed, 2022)
      Purpose: The COVID-19 pandemic affects mental health and sleep, resulting in frequent nightmares. Therefore, identifying factors associated with nightmare frequency is important, as it can indicate mental health issues. ...

    • How our Dreams Changed During the COVID-19 Pandemic: Effects and Correlates of Dream Recall Frequency - a Multinational Study on 19,355 Adults 

      Fränkl, Eirin; Scarpelli, Serena; Nadorff, Michael R.; Bjorvatn, Bjørn; Bolstad, Courtney J.; Chan, Ngan Yin; Chung, Frances; Dauvilliers, Yves; Espie, Colin A.; Inoue, Yuichi; Leger, Damien; Macedo, Taina; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Mota-Rolim, Sérgio Arthuro; Partinen, Markku; Penzel, Thomas; Plazzi, Giuseppe; Sieminski, Mariusz; Wing, Yun Kwok; Gennaro, Luigi De; Holzinger, Brigitte (Journal article; Peer reviewed, 2021)
      Objective: Many have reported odd dreams during the pandemic. Given that dreams are associated with mental health, understanding these changes could provide crucial information about wellbeing during the pandemic. This ...

    • Nightmares in People with COVID-19: Did Coronavirus Infect Our Dreams? 

      Scarpelli, Serena; Nadorff, Michael R.; Bjorvatn, Bjørn; Chung, Frances; Dauvilliers, Yves; Espie, Colin A.; Inoue, Yuichi; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Penzel, Thomas; Sieminski, Mariusz; Fang, Han; Macêdo, Tainá; Mota-Rolim, Sérgio A.; Leger, Damien; Plazzi, Giuseppe; Chan, Ngan Yin; Partinen, Markku; Bolstad, Courtney J.; Holzinger, Brigitte; De Gennaro, Luigi (Journal article; Peer reviewed, 2022)
      Introduction: A growing number of studies have demonstrated that the coronavirus disease-19 (COVID-19) pandemic has severely affected sleep and dream activity in healthy people. To date, no investigation has examined dream ...

    • Sleep symptoms are essential features of long-COVID – Comparing healthy controls with COVID-19 cases of different severity in the international COVID sleep study (ICOSS-II) 

      Merikanto, Ilona; Dauvilliers, Yves; Chung, Frances; Wing, Yun Kwok; de Gennaro, Luigi; Holzinger, Brigitte; Bjorvatn, Bjørn; Morin, Charles M.; Penzel, Thomas; Benedict, Christian; Koscec Bjelajac, Adrijana; Chan, Ngan Yin; Espie, Colin A.; Hrubos-Strøm, Harald; Inoue, Yuichi; Korman, Maria; Landtblom, Anne-Marie; Léger, Damien; Matsui, Kentaro; Mota-Rolim, Sergio; Nadorff, Michael R.; Plazzi, Giuseppe; Reis, Catia; Yordanova, Juliana; Partinen, Markku (Journal article; Peer reviewed, 2022)
      Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's “portfolio” of responses can be diminished, in turn ...

    • Social Jetlag Changes During the COVID-19 Pandemic as a Predictor of Insomnia – A MultiNational Survey Study 

      Brandão, Luiz Eduardo Mateus; Martikainen, Teemu; Merikanto, Ilona; Holzinger, Brigitte; Morin, Charles M.; Espie, Colin A.; Bolstad, Courtney J.; Leger, Damien; Chung, Frances; Plazzi, Giuseppe; Dauvilliers, Yves; Matsui, Kentaro; De Gennaro, Luigi; Sieminski, Mariusz; Nadorff, Michael R.; Chan, Ngan Yin; Wing, Yun Kwok; Mota-Rolim, Sérgio Arthuro; Inoue, Yuichi; Partinen, Markku; Benedict, Christian; Bjorvatn, Bjørn; Cedernaes, Jonathan (Journal article; Peer reviewed, 2021)
      Purpose: Lifestyle and work habits have been drastically altered by restrictions due to the COVID-19 pandemic. Whether the associated changes in sleep timing modulate the risk of suffering from symptoms of insomnia, the ...