Projects and publications
- Kjetil Elias Telle, Mari Grøsland, Jon Helgeland, Siri Eldevik Håberg, (2021). Factors associated with hospitalization, invasive mechanical ventilation treatment and death among all confirmed COVID-19 cases in Norway: Prospective cohort study. Scandinavian Journal of Public Health s. 41-47. doi: 10.1177/1403494820985172
- Marit Nymoen, Eva Aaker Biringer, Jostein Helgeland, Harald Bjarne Hellesen, Liv Alsaker Sande, Miriam Hartveit, (2020). Defining when specialised mental health care is needed: A focus group study. British Journal of General Practice Open s. 1-10. doi: 10.3399/bjgpopen20X101004
- Ezekiel J. Emanuel, Emily Gudbranson, Jessica Van Parys, Mette Gørtz, Jon Helgeland, Jonathan Skinner, (2020). Comparing Health Outcomes of Privileged US Citizens With Those of Average Residents of Other Developed Countries. JAMA Internal Medicine s. 339-344. doi: 10.1001/jamainternmed.2020.7484
- Robert Neil Whittaker, Mari Grøsland, Eirik Alnes Buanes, Sigrid Beitland, Bente Bryhn, Jon Helgeland, Olav Isak Rokstad Sjøflot, Jacob Dag Berild, Elina Marjukka Seppälä, Ragnhild Tønnessen, Kjetil Elias Telle, (2020). Sykehusinnleggelser med covid-19 ‒ en sammenligning av ulike datakilder. Tidsskrift for Den norske legeforening doi: 10.4045/tidsskr.20.0759
- Katrine Damgaard Skyrud, Doris Tove Kristoffersen, Jon Helgeland, (2020). 30 dagers overlevelse og reinnleggelse etter sykehusinnleggelse. Resultater for 2019. Folkehelseinstituttet
- Jon Helgeland, Katrine Damgaard Skyrud, Anne Karin Lindahl, Deborah S. Keller, Knut Magne Augestad, (2020). Benchmarking of abdominal surgery: a study evaluating the HARM score in a European national cohort. BJS Open s. 637-644. doi: 10.1002/bjs5.50284
- Gunnar Husabø, Roy Miodini Nilsen, Erik Solligård, Hans Flaatten, Kieran Walshe, Jan C Frich, Gunnar Tschudi Bondevik, Geir Sverre Braut, Jon Helgeland, Stig Harthug, Einar Hovlid, (2020). Effects of external inspections on sepsis detection and treatment: a stepped-wedge study with cluster-level randomisation. BMJ Open doi: 10.1136/bmjopen-2020-037715
- Hasse Melbye, Jon Helgeland, Øystein Karlstad, Inger Ariansen, Arnulf Langhammer, Torbjørn Wisløff, Per Nafstad, Wenche Nystad, (2020). Is the disease burden from COPD in Norway falling off? A study of time trends in three different data sources. The International Journal of Chronic Obstructive Pulmonary Disease s. 323-334. doi: 10.2147/COPD.S235106
- Katrine Damgaard Skyrud, Eirik Vikum, Tonya Moen Hansen, Doris Tove Kristoffersen, Jon Helgeland, (2019). Hospital Variation in 30‐Day Mortality for Patients With Stroke; The Impact of Individual and Municipal Socio‐Demographic Status. Journal of the American Heart Association (JAHA) doi: 10.1161/JAHA.118.010148
- Margreth Grotle, Milada Cvancarova Småstuen, Olaf Randall Fjeld, Lars Grøvle, Jon Helgeland, Kjersti Storheim, Tore Solberg, John-Anker Zwart, (2019). Lumbar spine surgery across 15 years: Trends, complications and reoperations in a longitudinal observational study from Norway. BMJ Open doi: 10.1136/bmjopen-2018-028743
- Mona Haugum, Hilde Karin Hestad Iversen, Jon Helgeland, Anne Karin Lindahl, Øyvind Andresen Bjertnæs, (2019). Patient experiences with interdisciplinary treatment for substance dependence: an assessment of quality indicators based on two national surveys in Norway. Patient Preference and Adherence s. 453-464. doi: 10.2147/PPA.S194925
- Ingeborg Strømseng Sjetne, Hilde Karin Hestad Iversen, Olaf Holmboe, Jon Helgeland, (2019). Response probabilities and response-mode preferences in a self-administered survey. BMC Research Notes doi: 10.1186/s13104-019-4328-7
- Olaf Randall Fjeld, Lars Grøvle, Jon Helgeland, Milada Cvancarova Småstuen, Tore Solberg, John-Anker Zwart, Margreth Grotle, (2019). Complications, reoperations, readmissions, and length of hospital stay in 34 639 surgical cases of lumbar disc herniation. The Bone & Joint Journal s. 470-477. doi: 10.1302/0301-620X.101B4.BJJ-2018-1184.R1
- Jon Helgeland, Oliver Tomic, Tonya Moen Hansen, Doris Tove Kristoffersen, Sahar Hassani, Anne Karin Lindahl, (2019). Postoperative wound dehiscence after laparotomy: a useful healthcare quality indicator? A cohort study based on Norwegian hospital administrative data. BMJ Open doi: 10.1136/bmjopen-2018-026422
- Lars Grøvle, Olaf Randall Fjeld, Anne Julsrud Haugen, Jon Helgeland, Milada Cvancarova Småstuen, Tore Solberg, John-Anker Zwart, Margreth Grotle, (2019). The Rates of LSS Surgery in Norwegian Public Hospitals: A Threefold Increase From 1999 to 2013. Spine s. E372-E378. doi: 10.1097/BRS.0000000000002858
- Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Laake, Marit Bragelien Veierød, (2018). Observed to expected or logistic regression to identify hospitals with high or low 30-day mortality?. PLOS ONE doi: 10.1371/journal.pone.0195248
- Einar Hovlid, Jan C Frich, Kieran Walshe, Roy Miodini Nilsen, Hans Flaatten, Geir Sverre Braut, Jon Helgeland, Inger Lise Teig, Stig Harthug, (2017). Effects of external inspection on sepsis detection and treatment: a study protocol for a quasiexperimental study with a stepped-wedge design. BMJ Open s. 1-16. doi: 10.1136/bmjopen-2017-016213
- Christine Raaen Tvedt, Ingeborg Strømseng Sjetne, Jon Helgeland, Hege Line Magnussen Løwer, Geir Bukholm, (2017). Nurses’ reports of staffing adequacy and surgical site infections: a cross-sectional multi-centre study. International Journal of Nursing Studies s. 58-64. doi: 10.1016/j.ijnurstu.2017.07.008
- Jon Helgeland, Doris Tove Kristoffersen, Katrine Damgaard Skyrud, Anja Schou Lindman, (2016). Variation between Hospitals with Regard to Diagnostic Practice, Coding Accuracy, and Case-Mix. A Retrospective Validation Study of Administrative Data versus Medical Records for Estimating 30-Day Mortality after Hip Fracture. PLOS ONE doi: 10.1371/journal.pone.0156075
- Sahar Hassani, Anja Schou Lindman, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland, (2015). 30-Day Survival Probabilities as a Quality Indicator for Norwegian Hospitals: Data Management and Analysis. PLOS ONE doi: 10.1371/journal.pone.0136547
- Doris Tove Kristoffersen, Jon Helgeland, Halfrid Waage, Jacob Thalamus, Dirk Clemens, Anja Schou Lindman, Liv Helen Rygh, Ole Tjomsland, (2015). Survival curves to support quality improvement in hospitals with excess 30-day mortality after acute myocardial infarction, cerebral stroke and hip fracture: A before-after study. BMJ Open doi: 10.1136/bmjopen-2014-006741
- Fahim Latif, Jon Helgeland, Geir Bukholm, Ida Rashida Khan Bukholm, (2015). Ethnicity differences in breast cancer stage at the time of diagnosis in Norway. Scandinavian Journal of Surgery s. 248-253. doi: 10.1177/1457496914565420
- Lise Lund Håheim, Jon Helgeland, (2014). Agreement between referral information and discharge diagnoses according to Norwegian elective treatment guidelines – a cross-sectional study.. BMC Health Services Research doi: 10.1186/s12913-014-0493-5
- Christine Raaen Tvedt, Ingeborg Strømseng Sjetne, Jon Helgeland, Geir Bukholm, (2014). An observational study: associations between nurse-reported hospital characteristics and estimated 30-day survival probabilities. BMJ Quality and Safety s. 757-764. doi: 10.1136/bmjqs-2013-002781
- Christine Raaen Tvedt, Ingeborg Strømseng Sjetne, Jon Helgeland, Geir Bukholm, (2012). A cross-sectional study to identify organizational processes associated with nurse-reported quality and patient safety. BMJ Open doi: 10.1136/bmjopen-2012-001967
- Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Laake, Marit Bragelien Veierød, (2012). Comparing hospital mortality - how to count does matter for patients hospitalized for acute myocardial infarction (AMI), stroke and hip fracture. BMC Health Services Research doi: 10.1186/1472-6963-12-364
- Andrew Garratt, Jon Helgeland, Pål Gulbrandsen, (2011). Five-point scales outperform 10-point scales in a randomized comparison of item scaling for the Patient Experiences Questionnaire. Journal of Clinical Epidemiology s. 200-207. doi: 10.1016/j.jclinepi.2010.02.016
- Ingeborg Strømseng Sjetne, Jon Helgeland, Knut Stavem, (2010). Classifying nursing organization in wards in Norwegian hospitals: self-identification versus observation. BMC Nursing doi: 10.1186/1472-6955-9-3
- Øyvind Andresen Bjertnæs, Andrew Malcolm Garratt, Jon Helgeland, Olaf Holmboe, Kari Aanjesen Dahle, Ketil Hanssen-Bauer, John-Arne Røttingen, (2008). Foresattes vurdering av barne- og ungdomspsykiatriske poliklinikker. Tidsskrift for Den norske legeforening s. 1041-1045.
- Katrine Damgaard Skyrud, Doris Tove Kristoffersen, Tonya Moen Hansen, Jon Helgeland, (2019). Kvalitet i helsetjenesten: 30 dagers overlevelse og reinnleggelse etter sykehusinnleggelse. Resultater for 2017
- Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland, (2017). Kvalitetsindikatoren 30 dagers reinnleggelse etter sykehusopphold. Resultater for helseforetak og kommuner 2016
- Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland, (2017). Kvalitetsindikatoren 30 dagers overlevelse etter sykehusinnleggelse. Resultater for 2016
- Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland, (2016). Kvalitetsindikatoren 30 dagers reinnleggelse etter sykehusopphold. Resultater for sykehus og kommuner 2015
- Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland, (2016). Kvalitetsindikatoren 30 dagers overlevelse etter sykehusinnleggelse. Resultater for 2015
- Doris Tove Kristoffersen, Tonya Moen Hansen, Anja Elsrud Schou Lindman, Oliver Tomic, Jon Helgeland, (2016). Kvalitetsindikatoren 30 dagers reinnleggelse etter sykehusopphold. Resultater for sykehus og kommuner 2014
- Ingrid Sperre Saunes, Oliver Tomic, Jon Helgeland, Anne Karin Lindahl, (2016). Helse i Norge - 2016: Kommentarrapport til OECDs sammenligning av europeiske land
- Anja Schou Lindman, Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland, (2015). Kvalitetsindikatoren 30-dagers overlevelse etter innleggelse i norske sykehus – resultater for året 2014
- Ingrid Sperre Saunes, Jon Helgeland, Oliver Tomic, Anne Karin Lindahl, (2015). Norsk helsetjeneste sammenliknet med andre OECD-land 2015
- Anja Schou Lindman, Doris Tove Kristoffersen, Sahar Hassani, Oliver Tomic, Jon Helgeland, (2015). 30-dagers reinnleggelse av eldre 2011–2013. Resultater for sykehus og kommuner
- Anja Schou Lindman, Oliver Tomic, Sahar Hassani, Doris Tove Kristoffersen, Jon Helgeland, (2015). 30-dagers overlevelse - institusjonsrapporter - 2. utgave
- Anja Schou Lindman, Sahar Hassani, Doris Tove Kristoffersen, Oliver Tomic, Tomislav Dimoski, Jon Helgeland, (2014). 30-dagers overlevelse og reinnleggelse ved norske sykehus for 2013
- Anja Schou Lindman, Oliver Tomic, Sahar Hassani, Doris Tove Kristoffersen, Jon Helgeland, (2014). 30-dagers overlevelse. Institusjonsrapporter
- Anne Karin Lindahl, Ove Talsnes, Wender Figved, Anette Hylen Ranhoff, Elise Berg Vesterhus, Ole Kristian Roald, Doris Tove Kristoffersen, Jon Helgeland, (2014). Tiltak for økt overlevelse etter hoftebrudd
- Ingrid Sperre Saunes, Jon Helgeland, Ånen Ringard, Anne Karin Lindahl, (2014). Norsk helsetjeneste sammenliknet med andre OECD-land 2013
- Ingrid Sperre Saunes, Jon Helgeland, Anne Karin Lindahl, (2014). Norsk helsetjeneste sammenliknet med andre europeiske OECD-land 2014
- Ingrid Sperre Saunes, Ånen Ringard, Jon Helgeland, Anne Karin Lindahl, (2013). Norsk helsetjeneste sammenliknet med andre europeiske OECD-land 2012
- Jon Helgeland, Doris Tove Kristoffersen, Sahar Hassani, Tomislav Dimoski, Anja Schou Lindman, (2013). Overlevelse og reinnleggelser ved norske sykehus for 2012
- Jon Helgeland, (2013). Overlevelse og reinnleggelser ved norske sykehus for 2012
- Anja Schou Lindman, Katrine Damgaard, Ole Tjomsland, Jon Helgeland, (2012). Reinnleggelser av eldre i Norge
- Jon Helgeland, Katrine Damgaard, Doris Tove Kristoffersen, Anja Schou Lindman, Tomislav Dimoski, Liv Helen Rygh, (2011). 30 dagers overlevelse etter innleggelse i norske sykehus – interimanalyse fra forskningsprosjektet
- Khang Ngoc Nguyen, Jon Helgeland, (2010). Norsk helsetjeneste sammenliknet med andre OECD-land
- Liv Rygh, Jon Helgeland, Geir Sverre Braut, Geir Bukholm, Nanna Fredheim, Jan C. Frich, Marit Halvorsen, Sverre A.C. Kittelsen, Trine Magnus, Khang Ngoc Nguyen, Janecke Thesen, Ole Tjomsland, (2010). Forslag til rammeverk for et nasjonalt kvalitetsindikatorsystem for helsetjenesten
- Gøril Groven, Olaf Holmboe, Jon Helgeland, Øyvind Andresen Bjertnæs, Hilde Hestad Iversen, (2009). Brukererfaringer med poliklinikker for voksne i psykisk helsevern. Nasjonale resultater i 2007 og utvikling fra 2004
- Olaf Holmboe, Øyvind Andresen Bjertnæs, Geir Bukholm, Khang Ngoc Nguyen, Jon Helgeland, John-Arne Røttingen, (2009). Commonwealth Fund-undersøkelsen i 2009 blant allmennleger: Resultater fra en komparativ undersøkelse i 11 land
- Jon Helgeland, (2008). Fremstilling av kvalitetsindikatorer på Fritt sykehusvalg
- Olaf Holmboe, Kari Aanjesen Dahle, Jon Helgeland, (2008). Foresattes vurderinger av tilbudet ved barne- og ungdomspsykiatriske poliklinikker i 2006. Resultater fra en nasjonal undersøkelse
- Liv Rygh, Jon Helgeland, Lise Lund Håheim, Ingrid Sperre Saunes, Geir Joner, (2008). Kvalitetsindikatorer basert på data fra medisinske kvalitetsregistre
- Kari Aanjesen Dahle, Jon Helgeland, Andrew Malcolm Garratt, (2008). Foresattes vurderinger av tilbudet ved barne- og ungdomspsykiatriske poliklinikker i 2006. Metodedokumentasjon for nasjonal undersøkelse
- Jon Helgeland, Liv Helen Rygh, Geir Joner, (2007). Nasjonale kvalitetsindikatorer basert på mål for dødelighet
- Sigve Oltedal, Jon Helgeland, Andrew Malcolm Garratt, (2007). Pasienters erfaringer med døgnenheter ved somatiske sykehus - Metodedokumentasjon for nasjonal undersøkelse i 2006
- Sigve Oltedal, Andrew Garratt, Jon Helgeland, (2007). Pasienters erfaringer med døgnenheter ved somatiske sykehus - Resultater fra en nasjonal undersøkelse i 2006
- Kari Aanjesen Dahle, Olaf Holmboe, Jon Helgeland, (2006). Brukererfaringer med døgnenheter i psykisk helsevern - Resultater og vurderinger etter en nasjonal undersøkelse i 2005
- Knut Magne Augestad, Jon Helgeland, Anne Karin Lindahl, (2020). Benchmarking av Abdominal Kirurgi ved Hjelp av HARM Score.
- Hasse Melbye, Arnulf Langhammer, Jon Helgeland, (2019). Changes in smoking and lung function between 2001 and 2016.
- Jon Helgeland, Oliver Tomic, Doris Tove Kristoffersen, Sahar Hassani, Anne Karin Lindahl, (2018). Is wound dehiscence after laparotomy a useful indicator of patient safety for Norwegian hospitals?.
- Tonya Moen Hansen, Doris Tove Kristoffersen, Anja Elsrud Schou Lindman, Jon Helgeland, (2018). 30-day mortality after admission for pneumonia based on administrative data - variation between hospitals.
- Doris Tove Kristoffersen, Jon Helgeland, Petter Laake, Marit Bragelien Veierød, (2018). Hospitals with high or low 30-day mortality - which method should we use to identify outliers?.
- Tonya Moen Hansen, Doris Tove Kristoffersen, Oliver Tomic, Jon Helgeland, (2017). Avoidable hospital admissions, length of hospital stay and probability of 30-day hospital readmission among elderly in Norway.
- Jon Petter Blixt, Alice Beathe Andersgaard, Halfrid Waage, Helge Stene-Johansen, Per Engstrand, Tonya Moen Hansen, Doris Tove Kristoffersen, Jon Helgeland, Ole Tjomsland, (2017). Experience with using 30-day survival curves to improve quality of care.
- Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Jon Helgeland, (2017). Unngåelige innleggelser, liggetid og sannsynlighet for akutt reinnleggelse av eldre pasienter i Norge.
- Jon Helgeland, Hanne Narbuvold, (2016). Re: Risikojustering ved måling av predikert dødelighet etter hjerteinfarkt. Tidsskrift for Den norske legeforening s. 689-690. doi: 10.4045/tidsskr.16.0330
- Tonya Moen Hansen, Doris Tove Kristoffersen, Jon Helgeland, (2016). Overlevelse ved Sykehuset i Østfold: Oppfølging fra møtet 12.09.2016.
- Doris Tove Kristoffersen, Tonya Moen Hansen, Oliver Tomic, Anja Schou Lindman, Jon Helgeland, (2016). Avoidable hospital admissions, length of hospital stay and probability of 30-day hospital readmission among elderly in Norway.
- Doris Tove Kristoffersen, Jon Helgeland, Jocelyne Clench-Aas, Petter Laake, Marit Bragelien Veierød, (2016). Type I error and power for detecting hospitals with high or low 30-day mortality.
- Doris Tove Kristoffersen, Anja Schou Lindman, Oliver Tomic, Jon Helgeland, (2015). Nasjonale kvalitetsindikatorer og resultater for Helgelandssykehuset HF.
- Doris Tove Kristoffersen, Anja Schou Lindman, Oliver Tomic, Jon Helgeland, (2015). Re: Hvordan sammenlikner vi kvalitet i helsetjenesten?. Tidsskrift for Den norske legeforening s. 1425-1426. doi: 10.4045/tidsskr.15.0821
- Lise Lund Håheim, Jon Helgeland, Anja Schou Lindman, (2014). Validation of referral information for elective treatment in hospitals to discharge diagnosis.
- Anja Schou Lindman, Oliver Tomic, Doris Tove Kristoffersen, Sahar Hassani, Jon Helgeland, (2014). 30 days readmission among the elderly – a new quality indicator for hospital performance in Norway.
- Anja Schou Lindman, Jon Helgeland, (2014). 30 dagers overlevelse 2013 - Sørlandet HF.
- Anja Schou Lindman, Jon Helgeland, (2014). 30 dagers overlevelse 2013 - Tynset sykehus.
- Anja Schou Lindman, Jon Helgeland, (2014). 30 dagers overlevelse i norske sykehus 2014 - resultater for Helse SørØst.
- Doris Tove Kristoffersen, Halfrid P. Waage, Ole Tjomsland, Jon Helgeland, (2014). 30-day mortality – a trigger for successful quality improvement in a Norwegian hospital.
- Ingrid Sperre Saunes, Jon Helgeland, Ånen Ringard, Anne Karin Lindahl, (2013). Norsk helsetjeneste sammenliknet med andre OECD land 2013. Rapport fra Kunnskapssenteret
- Doris Tove Kristoffersen, Anja Schou Lindman, Ole Tjomsland, Halfrid P. Waage, Jon Helgeland, (2013). Kaplan-Meier plots of 30-day mortality used for local improvement work.
- Ingrid Sperre Saunes, Anne Karin Lindahl, Ånen Ringard, Jon Helgeland, (2013). Norsk helsetjeneste sammenlignet med andre europeiske land.
- O Flesland, A.F. Asprang, Geir Sverre Braut, C.T. Steinsvag, Aurora Fernandez Espinosa, Jon Helgeland, (2012). Three Methods for Evaluating the Quality and Safety of Blood Banks Give Different Results. Transfusion s. 270A-271A.
- Christine Raaen Tvedt, Ingeborg Strømseng Sjetne, Jon Helgeland, Geir Bukholm, (2012). Structural characteristics of hospitals associated with patient safety indicators.
- Anja Schou Lindman, Katrine Damgaard, Ole Tjomsland, Jon Helgeland, (2012). 30 days readmission rates used as quality indicator among the elderly patients in Norway.
- Jon Helgeland, Katrine Damgaard, Anja Schou Lindman, Doris Tove Kristoffersen, (2012). Defining hospital stays.
- Doris Tove Kristoffersen, Katrine Damgaard, Jon Helgeland, (2012). Accounting for patients transferred between hospitalswhen using mortality as a quality indicatorfor the comparison of hospitals.
- Doris Tove Kristoffersen, Katrine Damgaard, Ole Tjomsland, Jon Helgeland, (2012). The use of Kaplan-Meier plots when comparing hospital mortality.
- Doris Tove Kristoffersen, Jon Helgeland, Katrine Damgaard, Halfrid P. Waage, Per Urdahl, Jan Dag Solli, Håkon Tobro, Ellen Catharina Tveter Deilkås, Ole Tjomsland, (2012). Using 30-day mortality in patient safety improvement work for AMI and stroke patients.
- Doris Tove Kristoffersen, Jon Helgeland, Katrine Damgaard, Dirk Clemens, Øyvind Sletten, Ola Einar Dahl, Ole Tjomsland, (2012). Using 30-day mortality data in patient safety improvement work for hip fracture patients.
- Christine Tvedt, Jon Helgeland, Ingeborg Strømseng Sjetne, Ole Tjomsland, Geir Bukholm, (2012). Nurse-reported work environment and diagnosis-related mortality.
- Liv Helen Rygh, Jon Helgeland, Geir Bukholm, Ole Tjomsland, (2011). Framework for a future national healthcare performance measurement system in Norway.
- Katrine Damgaard, Jon Helgeland, (2011). Algorithm for defining hospital stays.
- Jon Helgeland, Katrine Damgaard, Anja Schou Lindman, Doris Tove Kristoffersen, (2011). Using 30-days mortality as a quality indicator for AMI, stroke and hip fracture. Preliminary results for Norwegian hospitals during 2005-2009.
- Katrine Damgaard, Doris Tove Kristoffersen, Tomislav Dimoski, Jon Helgeland, (2011). Trends in mortality for AMI, stroke and hip fracture patients admitted to Norwegian hospitalsduring 1997-2001 and 2005-2009.
- Doris Tove Kristoffersen, Katrine Damgaard, Jon Helgeland, (2011). How should patient transferrals be accounted forwhen calculating in-and-out-of-hospitalmortality as a quality indicator?.
- Jon Helgeland, Jocelyne Clench-Aas, Doris Tove Kristoffersen, (2007). Validity of 30D mortality as a quality indicator for Norwegian hospitals.
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