Background and activities
M.Sc., Industrial mathematics, NTNU, 1983
Ph.D., statistics, NTNU, 1988
Lydersen, S. 2018. Cohen's kappa: Et mål på samsvar mellom observatører. Tidsskrift for Den norske legeforening, 138, (5) 467
Lydersen, S. 2018. Positivt og negativt samsvar. Tidsskrift for Den norske legeforening, 138, (6) 562
Lydersen, S. 2017. Hva er sannsynligheten for riktig resultat av en diagnostisk test? Tidsskrift for Den norske legeforening, 137, (18) 1437
Lydersen, S. 2015. Statistical review: frequently given comments. Ann.Rheum.Dis., 74, (2) 323-325
Fagerland, M. W., Lydersen, S., & Laake, P. 2015. Recommended confidence intervals for two independent binomial proportions. Statistical Methods in Medical research, 42, (2) 224-254
Lydersen, S., Langaas, M., & Bakke, Ø. 2012, "The Exact Unconditional z-pooled Test for Equality of Two Binomial Probabilities: Optimal Choice of the Berger and Boos Confidence Coefficient", Journal of Statistical Computation and simulation, vol. 82, no. 9, pp. 1311-1316.
Lydersen, S., Fagerland, M. W., & Laake, P. 2009, "Tutorial in biostatistics: Recommended tests for association in 2x2 tables", Statistics in Medicine.
Lydersen, S. 2007, "The human sex ratio in New York did not change after 11 September 2001". Human Reproduction.
Lydersen, S., Pradhan, V., Senchaudhuri, P., & Laake, P. 2007 "Choice of test for association in small sample unordered rxc tables". Statistics in Medicine.
Lydersen, S., Pradhan, V., Laake, P., & Senchaudhuri, P. 2005, "Power Comparison of Exact Tests for Association in Unordered rxc Contingency Tables Using standard, Mid p, and Randomized Test Versions.", Journal of Statistical Computation and simulation, vol. 75 (6), pp. 447-458.
Lydersen, S. & Laake, P. 2003, "Power comparison of two-sided exact tests for association in 2 x 2 contingency tables using standard, mid p and randomized test versions", Stat.Med., vol. 22, no. 24, pp. 3859-3871.
Lydersen, S. 1992, "Clayton's Model for Dependent Components in Systems Reliability", Reliability Engineering and Systems Safety, vol. 36, pp. 53-58.
Lydersen, S. & Rausand, M. 1987, "A systematic Approach to Accelerated Life Testing.", Reliability Engineering, vol. 18, no. 4.
Lydersen, S., Hansen, G. K, Sandtorv, H. (editors) 1998: "Safety and Reliability". Proceedings of the European Conference on Safety and Reliability - ESREL'98, Trondheim 16 - 19 June 1998. Balkema Publishers, Rotterdam.
Scientific, academic and artistic work
A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database
- (2018) A conservative weight loss intervention relieves bowel symptoms in morbidly obese subjects with irritable bowel syndrome: a prospective cohort study. Journal of Obesity. vol. 2018:3732753.
- (2018) Prognostic value of ErbB2/HER2 in human meningiomas. PLoS ONE. vol. 13 (10).
- (2018) New-onset pain in the early phase and three months following stroke – data from a multicenter study. Journal of Pain Research. vol. 11.
- (2018) Elevated cortisol levels in Norwegian toddlers in childcare. Early Child Development and Care. vol. 188 (12).
- (2018) Metabolic risk factors in schizophrenia and bipolar disorder: The effect of comedication with selective serotonin reuptake inhibitors and antipsychotics. European psychiatry. vol. 48.
- (2018) Long-term health-related quality of life and survival after cardiac surgery: A prospective study. Journal of Thoracic and Cardiovascular Surgery.
- (2018) Adherence to a Long-Term Physical Activity and Exercise Program After Stroke Applied in a Randomized Controlled Trial. Physical Therapy.
- (2018) Decreasing prevalence and severity of cerebral palsy in Norway among children born 1999 to 2010 concomitant with improvements in perinatal health. European journal of paediatric neurology. vol. 22 (5).
- (2018) Maternal personality disorder symptoms in primary health care: associations with mother–toddler interactions at one-year follow-up. BMC Psychiatry. vol. 18 (198).
- (2018) Effect of Age and Level of Education on Neurocognitive Impairment in HIV Positive Zambian Adults. Neuropsychology. vol. 32 (5).
- (2018) A randomized noninferiority trial comparing Cognitive Behavior Therapy for Insomnia (CBT-I) delivered by a therapist or via a fully automated online treatment program. Sleep.
- (2018) Effects of special education on academic achievement and task motivation: a propensity-score and fixed-effects approach. European Journal of Special Needs Education.
- (2018) Time spent lying, sitting, and upright during hospitalization after stroke: a prospective observation study. BMC Neurology. vol. 18:138.
- (2018) Developmental course of anxiety and depressive disorders from adolescence to young adulthood in a prospective Norwegian clinical cohort. European Child and Adolescent Psychiatry.
- (2018) Influence of disease activity and medications on offspring birth weight, pre-eclampsia and preterm birth in systemic lupus erythematosus: a population-based study. Annals of the Rheumatic Diseases. vol. 77 (2).
- (2018) Women with systemic lupus erythematosus get pregnant more easily than women with rheumatoid arthritis. Rheumatology. vol. 57 (6).
- (2018) Screening for mental health problems in a Norwegian preschool population. A validation of the Ages and Stages Questionnaire: Social- Emotional (ASQ:SE). Child and Adolescent Mental Health. vol. 23 (4).
- (2018) MNGI-29. Prognostic value of c-erbB2/HER2 expression in human meningiomas. Neuro-Oncology. vol. 20.
- (2018) Dose to penile bulb is not associated with erectile dysfunction 18 months post radiotherapy: A secondary analysis of a randomized trial. Clinical and Translational Radiation Oncology. vol. 13.
- (2018) Radiotherapy for prostate cancer ? Does daily image guidance with tighter margins improve patient reported outcomes compared to weekly orthogonal verified irradiation? Results from a randomized controlled trial. Radiotherapy and Oncology. vol. 126 (2).