Browsing Norwegian Institute of Public Health Open Repository by Author "Czajkowski, Nikolai Olavi"
Now showing items 1-20 of 44
-
A twin study of cigarette and snus initiation and quantity of use in Norwegian Adult Twins
Kendler, Kenneth S.; Aggen, Steven H.; Gillespie, Nathan; Czajkowski, Nikolai Olavi; Ystrøm, Eivind; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2019) -
A Web-Based Intervention Using "Five Ways to Wellbeing" to Promote Well-Being and Mental Health: Randomized Controlled Trial
Prydz, Monica Beer; Czajkowski, Nikolai Olavi; Eilertsen, Maja; Røysamb, Espen; Nes, Ragnhild Bang (Peer reviewed; Journal article, 2024) -
Associations between insecure attachment styles to parents and suicidal ideation in adolescents with depression
Waraan, Luxsiya; Mehlum, Lars; Rognli, Erling W.; Czajkowski, Nikolai Olavi; Villabø, Marianne (Peer reviewed; Journal article, 2021) -
Associations between personality disorders and cannabis use and cannabis use disorder: a population‐based twin study
Gillespie, Nathan A.; Aggen, Steven H.; Neale, Michael C.; Knudsen, Gun Peggy S.; Krueger, Robert F.; South, Susan C.; Czajkowski, Nikolai Olavi; Nesvåg, Ragnar; Ystrøm, Eivind; Kendler, Kenneth S.; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2018) -
Attachment and Political Personality are Heritable and Distinct Systems, and Both Share Genetics with Interpersonal Trust and Altruism
Kleppestø, Thomas Haarklau; Czajkowski, Nikolai Olavi; Vassend, Olav Mandt; Røysamb, Espen; Eftedal, Nikolai Haahjem; Sheehy-Skeffington, Jennifer; Ystrøm, Eivind; Kunst, Jonas R.; Gjerde, Line Cecilie; Thomsen, Lotte (Peer reviewed; Journal article, 2024) -
Caffeine consumption, toxicity, tolerance and withdrawal; shared genetic influences with normative personality and personality disorder traits
Czajkowski, Nikolai Olavi; Kendler, Kenneth S; Torvik, Fartein Ask; Ystrøm, Eivind; Rosenström, Tom Henrik; Gillespie, Nathan; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2020) -
Cognitive improvement in first-episode schizophrenia and healthy controls: A 6-year multi-assessment follow-up study
Fu, Susie; Czajkowski, Nikolai Olavi; Torgalsbøen, Anne-Kari (Peer reviewed; Journal article, 2018) -
Conflict with Parents in Adolescent Depression: Associations with Parental Interpersonal Problems and Depressive Symptoms
Rognli, Erling Wright; Waraan, Luxsiya; Czajkowski, Nikolai Olavi; Solbakken, Ole Andre; Aalberg, Marianne (Peer reviewed; Journal article, 2020)Conflict with parents is common among depressed adolescents, interferes with treatment, and may increase risk of recurrence. Parental depressive symptoms have been shown to predict conflict with adolescent children, but ... -
Correlations between social dominance orientation and political attitudes reflect common genetic underpinnings
Kleppestø, Thomas Haarklau; Czajkowski, Nikolai Olavi; Vassend, Olav; Røysamb, Espen; Eftedal, Nikolai Haahjem; Sheehy-Skeffington, Jennifer; Kunst, Jonas R.; Thomsen, Lotte (Peer reviewed; Journal article, 2019) -
Cross-Lagged Association Between Symptoms of Posttraumatic Stress Disorder and Perceived Centrality of a Terrorist Attack
Glad, Kristin Alve; Czajkowski, Nikolai Olavi; Dyb, Grete; Hafstad, Gertrud Sofie (Peer reviewed; Journal article, 2019) -
Design efficiency in genetic association studies
Gjerdevik, Miriam; Gjessing, Håkon K.; Romanowska, Julia; Haaland, Øystein Ariansen; Jugessur, Astanand; Czajkowski, Nikolai Olavi; Lie, Rolv T. (Peer reviewed; Journal article, 2020) -
Does event centrality mediate the effect of peritraumatic reactions on post-traumatic growth in survivors of a terrorist attack?
Glad, Kristin Alve; Czajkowski, Nikolai Olavi; Dyb, Grete; Hafstad, Gertrud Sofie (Peer reviewed; Journal article, 2020) -
Does low alcohol use increase the risk of sickness absence? A discordant twin study
Østby, Kristian Amundsen; Czajkowski, Nikolai Olavi; Knudsen, Gun Peggy; Ystrøm, Eivind; Gjerde, Line C.; Kendler, Kenneth S.; Ørstavik, Ragnhild; Reichborn-Kjennerud, Ted (Journal article, 2016) -
Effectiveness of attachment-based family therapy compared to treatment as usual for depressed adolescents in community mental health clinics
Waraan, Luxsiya; Rognli, Erling W.; Czajkowski, Nikolai Olavi; Villabø, Marianne; Mehlum, Lars (Peer reviewed; Journal article, 2021) -
Effects of a school-based intervention on levels of anxiety and depression: a cluster-randomized controlled trial of the MindPower program in ten high schools in Norway
Sælid, Gry Anette; Czajkowski, Nikolai Olavi; Aarø, Leif Edvard; Andersen, John Roger; Idsøe, Thormod; Helleseter, Miguel Delgado; Holte, Arne (Peer reviewed; Journal article, 2022) -
Efficacy of attachment-based family therapy compared to treatment as usual for suicidal ideation in adolescents with MDD
Waraan, Luxsiya; Rognli, Erling W.; Czajkowski, Nikolai Olavi; Mehlum, Lars; Villabø, Marianne (Peer reviewed; Journal article, 2020) -
Explaining the association between anxiety disorders and alcohol use disorder: A twin study
Torvik, Fartein Ask; Rosenström, Tom Henrik; Gustavson, Kristin; Ystrøm, Eivind; Kendler, Kenneth S.; Bramness, Jørgen Gustav; Czajkowski, Nikolai Olavi; Reichborn-Kjennerud, Ted (Peer reviewed; Journal article, 2019) -
Fatigue symptoms in relation to neuroticism, anxiety-depression, and musculoskeletal pain. A longitudinal twin study
Vassend, Olav; Røysamb, Espen; Nielsen, Christopher Sivert; Czajkowski, Nikolai Olavi (Peer reviewed; Journal article, 2018) -
Genetically Informative Mediation Modeling Applied to Stressors and Personality-Disorder Traits in Etiology of Alcohol Use Disorder
Rosenström, Tom Henrik; Czajkowski, Nikolai Olavi; Ystrøm, Eivind; Krueger, Robert F; Aggen, Steven H; Gillespie, Nathan A; Eilertsen, Espen Moen; Reichborn-Kjennerud, Ted; Torvik, Fartein Ask (Peer reviewed; Journal article, 2018) -
Genetics, personality and wellbeing. A twin study of traits, facets and life satisfaction
Røysamb, Espen; Nes, Ragnhild Bang; Czajkowski, Nikolai Olavi; Vassend, Olav (Peer reviewed; Journal article, 2018)