How handling missing data may impact conclusions: A comparison of six different imputation methods for categorical questionnaire data

by Marianne Riksheim Stavseth, Thomas Clausen, Jo Røislien
Published 2019-01-01

From restrictive to more liberal: variations in mortality among patients in opioid maintenance treatment over a 12-year period

by Anne Bukten, Marianne Riksheim Stavseth, Thomas Clasuen
Published 2019-08-01

The Norwegian Offender Mental Health and Addiction Study – Design and Implementation of a National Survey and Prospective Cohort Study

by Anne Bukten, Ingunn Olea Lund, Eline Borger Rognli, Marianne Riksheim Stavseth, Philipp Lobmaier, Svetlana Skurtveit, Thomas Clausen, Nikolaj Kunøe
Published 2015-01-01

The Norwegian Offender Mental Health and Addiction Study – Design and Implementation of a National Survey and Prospective Cohort Study

by Anne Bukten, Ingunn Olea Lund, Eline Borger Rognli, Marianne Riksheim Stavseth, Philipp Lobmaier, Svetlana Skurtveit, Thomas Clausen, Nikolaj Kunøe
Published 2015-11-01

Factors associated with drug use in prison – results from the Norwegian offender mental health and addiction (NorMA) study

by Anne Bukten, Ingunn Olea Lund, Stuart A. Kinner, Eline Borger Rognli, Ingrid Amalia Havnes, Ashley Elizabeth Muller, Marianne Riksheim Stavseth
Published 2020-05-01