O O Aalen

Summary

Affiliation: University of Oslo
Country: Norway

Publications

  1. ncbi request reprint Survival models based on the Ornstein-Uhlenbeck process
    Odd O Aalen
    Department of Statistics, Institute of Basic Medical Sciences, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Lifetime Data Anal 10:407-23. 2004
  2. ncbi request reprint Dynamic analysis of recurrent event data using the additive hazard model
    Johan Fosen
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, N 0317 Oslo
    Biom J 48:381-98. 2006
  3. ncbi request reprint Covariate adjustment of event histories estimated from Markov chains: the additive approach
    O O Aalen
    Section of Medical Statistics, University of Oslo, Norway
    Biometrics 57:993-1001. 2001
  4. ncbi request reprint Dynamic analysis of multivariate failure time data
    Odd O Aalen
    Section of Medical Statistics, University of Oslo, Blindern, N 0317 Oslo, Norway
    Biometrics 60:764-73. 2004
  5. doi request reprint Regression models for infant mortality data in Norwegian siblings, using a compound Poisson frailty distribution with random scale
    Tron Anders Moger
    Institute of Basic Medical Sciences, Department of Biostatistics, University of Oslo PO Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 9:577-91. 2008
  6. pmc Frailty modeling of bimodal age-incidence curves of nasopharyngeal carcinoma in low-risk populations
    Marion Haugen
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, PO Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 10:501-14. 2009
  7. ncbi request reprint Adjusting and comparing survival curves by means of an additive risk model
    P H Zahl
    Section of Medical Statistics, University of Oslo
    Lifetime Data Anal 4:149-68. 1998
  8. ncbi request reprint A distribution for multivariate frailty based on the compound Poisson distribution with random scale
    Tron Anders Moger
    Section of Medical Statistics, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Lifetime Data Anal 11:41-59. 2005
  9. ncbi request reprint Analysis of testicular cancer data using a frailty model with familial dependence
    Tron A Moger
    Section of Medical Statistics, University of Oslo, Norway
    Stat Med 23:617-32. 2004
  10. ncbi request reprint Frailty modelling of testicular cancer incidence using Scandinavian data
    Tron A Moger
    Section of Medical Statistics, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 5:1-14. 2004

Detail Information

Publications28

  1. ncbi request reprint Survival models based on the Ornstein-Uhlenbeck process
    Odd O Aalen
    Department of Statistics, Institute of Basic Medical Sciences, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Lifetime Data Anal 10:407-23. 2004
    ..We extend known results on this model. The results on quasi-stationarity are relevant for recent discussions about mortality plateaus. In addition, we point out a connection to models for short-term interest rates in financial modeling...
  2. ncbi request reprint Dynamic analysis of recurrent event data using the additive hazard model
    Johan Fosen
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, N 0317 Oslo
    Biom J 48:381-98. 2006
    ..Theoretical considerations as well as simulations are presented, and a data set on recurrent bladder tumors is used to illustrate the methodology...
  3. ncbi request reprint Covariate adjustment of event histories estimated from Markov chains: the additive approach
    O O Aalen
    Section of Medical Statistics, University of Oslo, Norway
    Biometrics 57:993-1001. 2001
    ..A program in R and S-PLUS that can carry out the analyses described here has been developed and is freely available on the Internet...
  4. ncbi request reprint Dynamic analysis of multivariate failure time data
    Odd O Aalen
    Section of Medical Statistics, University of Oslo, Blindern, N 0317 Oslo, Norway
    Biometrics 60:764-73. 2004
    ..A program in R and S-PLUS for analyzing survival data with the additive regression model is available on the web site http://www.med.uio.no/imb/stat/addreg. The program has been developed to fit the counting process framework...
  5. doi request reprint Regression models for infant mortality data in Norwegian siblings, using a compound Poisson frailty distribution with random scale
    Tron Anders Moger
    Institute of Basic Medical Sciences, Department of Biostatistics, University of Oslo PO Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 9:577-91. 2008
    ..An application to data infant mortality in siblings from the Medical Birth Registry of Norway is included. We compare the results for some of the different covariate modeling options...
  6. pmc Frailty modeling of bimodal age-incidence curves of nasopharyngeal carcinoma in low-risk populations
    Marion Haugen
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, PO Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 10:501-14. 2009
    ..The results are critically compared and discussed in the context of existing knowledge of the epidemiology and pathogenesis of NPC...
  7. ncbi request reprint Adjusting and comparing survival curves by means of an additive risk model
    P H Zahl
    Section of Medical Statistics, University of Oslo
    Lifetime Data Anal 4:149-68. 1998
    ..The authors use a data set of malignant melanoma patients diagnosed from 1965 to 1974 in Norway. The 25-year survival of 1967 individuals is studied...
  8. ncbi request reprint A distribution for multivariate frailty based on the compound Poisson distribution with random scale
    Tron Anders Moger
    Section of Medical Statistics, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Lifetime Data Anal 11:41-59. 2005
    ..An application to infant mortality data from the Medical Birth Registry of Norway is included, where the model is compared to more traditional shared frailty models...
  9. ncbi request reprint Analysis of testicular cancer data using a frailty model with familial dependence
    Tron A Moger
    Section of Medical Statistics, University of Oslo, Norway
    Stat Med 23:617-32. 2004
    ..This indicates that the results are valid also if other distributions are used to model familial dependence in the compound Poisson frailty model...
  10. ncbi request reprint Frailty modelling of testicular cancer incidence using Scandinavian data
    Tron A Moger
    Section of Medical Statistics, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Biostatistics 5:1-14. 2004
    ..This paper demonstrates that a model including a frailty effect fits the incidence data well and gives interesting results and interpretations, although this is no proof of the effect's truth...
  11. ncbi request reprint Spatial smoothing of cancer survival: a Bayesian approach
    K Osnes
    Institute for Basic Medical Sciences, Section of Medical Statistics, University of Oslo, P O Box 1122 Blindern, N 0317 Oslo, Norway
    Stat Med 18:2087-99. 1999
    ..The estimates provided by the Cox and the FB approach resembled each other, but the FB approach gave more geographical details. In particular, the boundaries of the clusters of high or low survival provided by the FB are more realistic...
  12. ncbi request reprint Dynamic path analysis-a new approach to analyzing time-dependent covariates
    Johan Fosen
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, P O Box 1122, N 0317, Blindern, Oslo, Norway
    Lifetime Data Anal 12:143-67. 2006
    ..The methodology is illustrated using data from a randomized trial on survival for patients with liver cirrhosis...
  13. ncbi request reprint Medical statistics--no time for complacency
    O O Aalen
    Section of Medical Statistics, University of Oslo, Blindern, Norway
    Stat Methods Med Res 9:31-40. 2000
    ..The need for further methodological development in this field is stressed. There is also need for connecting statistical work more intimately to biological knowledge than is the case today...
  14. doi request reprint Estimating influenza-related excess mortality and reproduction numbers for seasonal influenza in Norway, 1975-2004
    J M Gran
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
    Epidemiol Infect 138:1559-68. 2010
    ..Estimates of the reproduction number R, ranged from about 1 to 1.69...
  15. doi request reprint Analysis of censored discrete longitudinal data: estimation of mean response
    Nina Gunnes
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, N 0317 Oslo, Norway
    Stat Med 28:605-24. 2009
    ..Analyses of substantive data from (1) a study of symptoms experienced after a traumatic brain injury, and (2) a study of cognitive function among the elderly, are used as illustrations of the methods presented...
  16. doi request reprint Growth rates in epidemic models: application to a model for HIV/AIDS progression
    Jon Michael Gran
    Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, P O Box 1122, Blindern, N 0317 Oslo, Norway
    Stat Med 27:4817-34. 2008
    ..The work is illustrated by a model for HIV/AIDS progression among homosexual men in England and Wales. We conclude that other measures of growth, in addition to R0, give important supplementary information...
  17. pmc Breast cancer tumor growth estimated through mammography screening data
    Harald Weedon-Fekjaer
    Department of Etiological Research, Cancer Registry of Norway, Institute of Population Based Cancer Research, Montebello, N 0310 Oslo, Norway
    Breast Cancer Res 10:R41. 2008
    ..In the present study based on the Norwegian Breast Cancer Screening Program, tumor growth was estimated from a large population using a new estimating procedure/model...
  18. ncbi request reprint The Mizon-Richard encompassing test for the Cox and Aalen additive hazards models
    Torben Martinussen
    Department of Natural Sciences, University of Copenhagen, Thorvaldsensvej 40, DK 1871 Frederiksberg C, Denmark
    Biometrics 64:164-71. 2008
    ..The finite-sample properties of the proposed procedures are assessed through a simulation study. The methods are further applied to the well-known primary biliary cirrhosis data set...
  19. ncbi request reprint Frailty modelling of colorectal cancer incidence in Norway: indications that individual heterogeneity in risk is related to birth cohort
    Elisabeth Svensson
    The Cancer Registry of Norway, Institute of Population Based Cancer Research, Montebello, Oslo, N 0310 Norway
    Eur J Epidemiol 21:587-93. 2006
    ....
  20. ncbi request reprint Global tests in the additive hazards regression model
    Axel Gandy
    Department of Mathematics, Imperial College London, London, UK
    Stat Med 27:831-44. 2008
    ..This test is a natural extension of the logrank test. We shall also discuss an alternative covariance estimator. The tests are applied to a data set and a simulation study is performed...
  21. ncbi request reprint Estimating mean sojourn time and screening test sensitivity in breast cancer mammography screening: new results
    Harald Weedon-Fekjaer
    Kreftregisteret, Institute of Population Based Cancer Research, Montebello, N 0310, Oslo, Norway
    J Med Screen 12:172-8. 2005
    ....
  22. ncbi request reprint Legal access to needles and syringes/needle exchange programmes versus HIV counselling and testing to prevent transmission of HIV among intravenous drug users: a comparative study of Denmark, Norway and Sweden
    Ellen J Amundsen
    Norwegian Institute for Alcohol and Drug Research, Oslo, Norway
    Eur J Public Health 13:252-8. 2003
    ..The objective of this study was to discuss the effectiveness of legal access to needles and syringes/ needle exchange programmes versus HIV counselling and testing among intravenous drug users (IDUs) as part of HIV prevention strategies...
  23. doi request reprint Age-incidence curves of nasopharyngeal carcinoma worldwide: bimodality in low-risk populations and aetiologic implications
    Freddie Bray
    The Cancer Registry of Norway, Institute of Population Based Cancer Research, Montebello, N 0310 Oslo, Norway
    Cancer Epidemiol Biomarkers Prev 17:2356-65. 2008
    ..A modified model for NPC tumor development is proposed on the basis of these observations...
  24. ncbi request reprint Life course determinants for early disability pension: a follow-up of Norwegian men and women born 1967-1976
    Hans Magne Gravseth
    National Institute of Occupational Health, P O Box 8149 Dep, 0033, Oslo, Norway
    Eur J Epidemiol 22:533-43. 2007
    ..We wanted to study possible determinants of an early DP with a life course perspective within a large register-based cohort, with a main focus on the biological and social factors from childhood...
  25. ncbi request reprint Bayesian back-calculation using a multi-state model with application to HIV
    Michael J Sweeting
    MRC Biostatistics Unit, Institute of Public Health, University Forvie Site, Robinson Way, Cambridge CB2 2SR, UK
    Stat Med 24:3991-4007. 2005
    ..The idea is illustrated on data from the HIV epidemic in homosexuals in England and Wales...
  26. ncbi request reprint Inter-rater reliability of clinician-rated outcome measures in child and adolescent mental health services
    Ketil Hanssen-Bauer
    Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, P O Box 4623, Nydalen, NO 0405, Oslo, Norway
    Adm Policy Ment Health 34:504-12. 2007
    ..81 (single scales 0.47-0.96), for the CGAS 0.61 and for the GAPD 0.60. The reliability was not lower on patients. The rater's profession, experience or clinic did not have effect on the scores...
  27. ncbi request reprint Cross-national reliability of clinician-rated outcome measures in child and adolescent mental health services
    Ketil Hanssen-Bauer
    Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, P O Box 4623, Nydalen, Oslo, NO 0405, Norway
    Adm Policy Ment Health 34:513-8. 2007
    ..The ICC for the HoNOSCA total score was 0.84, for the CGAS 0.61 and for the GAPD 0.54. These measures may usefully contribute to cross-national comparison studies...
  28. ncbi request reprint [Why Bayesian thinking?]
    Odd O Aalen
    Tidsskr Nor Laegeforen 122:1354. 2002