Publications 2024

Huynh TM, Falk RS, Hellebust TP, Dale E, Astrup GL, Hjermstad MJ, Malinen E, Bjordal K, Kiserud CE, Herlofson BB, Nome R, Amdal CD (2024)
Chronic fatigue in long-term survivors of head and neck cancer treated with radiotherapy
Radiother Oncol, 195, 110231
DOI 10.1016/j.radonc.2024.110231, PubMed 38518958

Singer S, Hammerlid E, Tomaszewska IM, Amdal CD, Herlofson BB, Santos M, Castro Silva J, Mehanna H, Fullerton A, Young T, Fernandez Gonzalez L, Inhestern J, Pinto M, Arraras JI, Yarom N, Bonomo P, Baumann I, Galalae R, Nicolatou-Galitis O, Kiyota N, Raber-Durlacher J, Salem D, Fabian A, Boehm A, Krejovic-Trivic S et al. (2024)
The european organisation for research and treatment of cancer head and neck cancer module (EORTC QLQ-HN43): Estimates for minimal important difference and minimal important change
Eur J Cancer, 212, 115062
DOI 10.1016/j.ejca.2024.115062, PubMed 39405647

Taylor KJ, Amdal CD, Bjordal K, Astrup GL, Herlofson BB, Duprez F, Gama RR, Jacinto A, Hammerlid E, Scricciolo M, Jansen F, Verdonck-de Leeuw IM, Fanetti G, Guntinas-Lichius O, Inhestern J, Dragan T, Fabian A, Boehm A, Wöhner U, Kiyota N, Krüger M, Bonomo P, Pinto M, Nuyts S, Silva JC et al. (2024)
Long-term health-related quality of life in head and neck cancer survivors: A large multinational study
Int J Cancer, 154 (10), 1772-1785
DOI 10.1002/ijc.34861, PubMed 38312044

Publications 2023

Amdal CD, Moan JM, Dale E, Falk RS, Johansen S, Bjordal K (2023)
Impact of hyperfractionated re-irradiation on quality of life in patients with recurrent or second primary head and neck cancer, a prospective single institutional study
Clin Transl Radiat Oncol, 42, 100654
DOI 10.1016/j.ctro.2023.100654, PubMed 37415638

Huynh TM, Dale E, Falk RS, Hellebust TP, Astrup GL, Malinen E, Edin NFJ, Bjordal K, Herlofson BB, Kiserud CE, Helland Å, Amdal CD (2023)
Radiation-induced long-term dysphagia in survivors of head and neck cancer and association with dose-volume parameters
Radiother Oncol, 190, 110044
DOI 10.1016/j.radonc.2023.110044, PubMed 38061420

Pe M, Alanya A, Falk RS, Amdal CD, Bjordal K, Chang J, Cislo P, Coens C, Dirven L, Speck RM, Fitzgerald K, Galinsky J, Giesinger JM, Holzner B, Le Cessie S, O'Connor D, Oliver K, Pawar V, Quinten C, Schlichting M, Ren J, Roychoudhury S, Taphoorn MJB, Velikova G, Wintner LM et al. (2023)
Setting International Standards in Analyzing Patient-Reported Outcomes and Quality of Life Endpoints in Cancer Clinical Trials-Innovative Medicines Initiative (SISAQOL-IMI): stakeholder views, objectives, and procedures
Lancet Oncol, 24 (6), e270-e283
DOI 10.1016/S1470-2045(23)00157-2, PubMed 37269858

Taylor KJ, Amdal CD, Bjordal K, Astrup GL, Herlofson BB, Duprez F, Gama RR, Jacinto A, Hammerlid E, Scricciolo M, Jansen F, Verdonck-de Leeuw IM, Fanetti G, Guntinas-Lichius O, Inhestern J, Dragan T, Fabian A, Boehm A, Wöhner U, Kiyota N, Krüger M, Bonomo P, Pinto M, Nuyts S, Silva JC et al. (2023)
Serious Long-Term Effects of Head and Neck Cancer from the Survivors' Point of View
Healthcare (Basel), 11 (6)
DOI 10.3390/healthcare11060906, PubMed 36981562

Publications 2022

Amdal CD, Falk RS, Singer S, Pe M, Piccinin C, Bottomley A, Appiah LT, Arraras JI, Bayer O, Buanes EA, Darlington AS, Arbanas GD, Hofsø K, Holzner B, Sahlstrand-Johnson P, Kuliś D, Parmar G, Rmeileh NMEA, Schranz M, Sodergren S, Bjordal K (2022)
A multicenter international prospective study of the validity and reliability of a COVID-19-specific health-related quality of life questionnaire
Qual Life Res, 32 (2), 447-459
DOI 10.1007/s11136-022-03272-2, PubMed 36273365

Amdal CD, Taylor K, Kuliś D, Falk RS, Bottomley A, Arraras JI, Barte JH, Darlington AS, Hofsø K, Holzner B, Jørgensen NMH, Mariano MP, Pe M, Piccinin C, Riccetti N, Schranz M, Wheelwright S, Bjordal K (2022)
Health-related quality of life in patients with COVID-19; international development of a patient-reported outcome measure
J Patient Rep Outcomes, 6 (1), 26
DOI 10.1186/s41687-022-00434-1, PubMed 35348945

Huynh TTM, Aass HCD, Falk RS, Astrup GL, Helland Å, Bjøro T, Bjordal K, Dale E, Hellebust TP, Herlofson BB, Malinen E, Kiserud CE, Osnes T, Amdal CD (2022)
Associations between patient-reported late effects and systemic cytokines in long-term survivors of head and neck cancer treated with radiotherapy
J Cancer Surviv, 17 (4), 1082-1093
DOI 10.1007/s11764-022-01273-1, PubMed 36350483

Publications 2021

Amdal CD, Pe M, Falk RS, Piccinin C, Bottomley A, Arraras JI, Darlington AS, Hofsø K, Holzner B, Jørgensen NMH, Kulis D, Rimehaug SA, Singer S, Taylor K, Wheelwright S, Bjordal K (2021)
Health-related quality of life issues, including symptoms, in patients with active COVID-19 or post COVID-19; a systematic literature review
Qual Life Res, 30 (12), 3367-3381
DOI 10.1007/s11136-021-02908-z, PubMed 34146226

Astrup GL, Rohde G, Rimehaug SA, Andersen MH, Bernklev T, Bjordal K, Falk RS, Jørgensen NMH, Stavem K, Tollisen A, Amdal CD, (2021)
Comparing the use of patient-reported outcomes in clinical studies in Europe in 2008 and 2018: a literature review
Qual Life Res, 31 (3), 659-669
DOI 10.1007/s11136-021-02946-7, PubMed 34350566

Singer S, Hammerlid E, Tomaszewska IM, Amdal CD, Bjordal K, Herlofson BB, Santos M, Silva JC, Mehanna H, Fullerton A, Brannan C, Gonzalez LF, Inhestern J, Pinto M, Arraras JI, Yarom N, Bonomo P, Baumann I, Galalae R, Nicolatou-Galitis O, Kiyota N, Raber-Durlacher J, Salem D, Fabian A, Boehm A et al. (2021)
Methodological approach for determining the Minimal Important Difference and Minimal Important Change scores for the European Organisation for Research and Treatment of Cancer Head and Neck Cancer Module (EORTC QLQ-HN43) exemplified by the Swallowing scale
Qual Life Res, 31 (3), 841-853
DOI 10.1007/s11136-021-02939-6, PubMed 34272632

Publications 2020

Astrup GL, Hofsø K, Bjordal K, Rustøen T (2020)
Cancer patients' diagnosis and symptoms and their family caregivers' self-efficacy and social support are associated with different caregiver reactions
Eur J Cancer Care (Engl), 29 (6), e13311
DOI 10.1111/ecc.13311, PubMed 32885524

Publications 2019

Mierzynska J, Piccinin C, Pe M, Martinelli F, Gotay C, Coens C, Mauer M, Eggermont A, Groenvold M, Bjordal K, Reijneveld J, Velikova G, Bottomley A (2019)
Prognostic value of patient-reported outcomes from international randomised clinical trials on cancer: a systematic review
Lancet Oncol, 20 (12), e685-e698
DOI 10.1016/S1470-2045(19)30656-4, PubMed 31797795

Singer S, Amdal CD, Hammerlid E, Tomaszewska IM, Castro Silva J, Mehanna H, Santos M, Inhestern J, Brannan C, Yarom N, Fullerton A, Pinto M, Arraras JI, Kiyota N, Bonomo P, Sherman AC, Baumann I, Galalae R, Fernandez Gonzalez L, Nicolatou-Galitis O, Abdel-Hafeez Z, Raber-Durlacher J, Schmalz C, Zotti P, Boehm A et al. (2019)
International validation of the revised European Organisation for Research and Treatment of Cancer Head and Neck Cancer Module, the EORTC QLQ-HN43: Phase IV
Head Neck, 41 (6), 1725-1737
DOI 10.1002/hed.25609, PubMed 30636188

Publications 2017

Amdal CD, Jacobsen AB, Falk RS, Johnson E, Os SS, Warloe T, Bjordal K (2017)
Improved treatment decisions in patients with esophageal cancer
Acta Oncol, 56 (10), 1286-1294
DOI 10.1080/0284186X.2017.1346379, PubMed 28686501

Astrup GL, Hofsø K, Bjordal K, Guren MG, Vistad I, Cooper B, Miaskowski C, Rustøen T (2017)
Patient factors and quality of life outcomes differ among four subgroups of oncology patients based on symptom occurrence
Acta Oncol, 56 (3), 462-470
DOI 10.1080/0284186X.2016.1273546, PubMed 28077018

Astrup GL, Rustøen T, Hofsø K, Gran JM, Bjordal K (2017)
Symptom burden and patient characteristics: Association with quality of life in patients with head and neck cancer undergoing radiotherapy
Head Neck, 39 (10), 2114-2126
DOI 10.1002/hed.24875, PubMed 28766791

Bjordal K, Bottomley A (2017)
Making Advances in Quality of Life Studies in Head and Neck Cancer
Int J Radiat Oncol Biol Phys, 97 (4), 659-661
DOI 10.1016/j.ijrobp.2016.11.051, PubMed 28244403

Publications 2016

Hjermstad MJ, Bergenmar M, Bjordal K, Fisher SE, Hofmeister D, Montel S, Nicolatou-Galitis O, Pinto M, Raber-Durlacher J, Singer S, Tomaszewska IM, Tomaszewski KA, Verdonck-de Leeuw I, Yarom N, Winstanley JB, Herlofson BB, EORTC QoL Group (2016)
International field testing of the psychometric properties of an EORTC quality of life module for oral health: the EORTC QLQ-OH15
Support Care Cancer, 24 (9), 3915-24
DOI 10.1007/s00520-016-3216-0, PubMed 27113466

Publications 2015

Astrup GL, Rustøen T, Miaskowski C, Paul SM, Bjordal K (2015)
A Longitudinal Study of Depressive Symptoms in Patients With Head and Neck Cancer Undergoing Radiotherapy
Cancer Nurs, 38 (6), 436-46
DOI 10.1097/NCC.0000000000000225, PubMed 25643005

Astrup GL, Rustøen T, Miaskowski C, Paul SM, Bjordal K (2015)
Changes in and predictors of pain characteristics in patients with head and neck cancer undergoing radiotherapy
Pain, 156 (5), 967-979
DOI 10.1097/j.pain.0000000000000142, PubMed 25719616

Cehajic I, Bergan S, Bjordal K (2015)
Pharmacist assessment of drug-related problems on an oncology ward
Eur. J. Hosp. Pharm., 22 (4), 194-197
DOI 10.1136/ejhpharm-2014-000510

Quinten C, Coens C, Ghislain I, Zikos E, Sprangers MA, Ringash J, Martinelli F, Ediebah DE, Maringwa J, Reeve BB, Greimel E, King MT, Bjordal K, Flechtner HH, Schmucker-Von Koch J, Taphoorn MJ, Weis J, Wildiers H, Velikova G, Bottomley A, PROBE, EORTC Clinical Groups (2015)
The effects of age on health-related quality of life in cancer populations: A pooled analysis of randomized controlled trials using the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 involving 6024 cancer patients
Eur J Cancer, 51 (18), 2808-19
DOI 10.1016/j.ejca.2015.08.027, PubMed 26602015

Publications 2014

Amdal CD, Bjordal K (2014)
Are surrogate endpoints useful in clinical studies?
Tidsskr Nor Laegeforen, 134 (11), 1128-9
DOI 10.4045/tidsskr.14.0411, PubMed 24939776

Hofsø K, Bjordal K, Diep LM, Rustøen T (2014)
The relationships between demographic and clinical characteristics and quality of life during and after radiotherapy: in women with breast cancer
Qual Life Res, 23 (10), 2769-77
DOI 10.1007/s11136-014-0736-2, PubMed 24952109

Publications 2013

Amdal CD, Jacobsen AB, Sandstad B, Warloe T, Bjordal K (2013)
Palliative brachytherapy with or without primary stent placement in patients with oesophageal cancer, a randomised phase III trial
Radiother Oncol, 107 (3), 428-33
DOI 10.1016/j.radonc.2013.04.008, PubMed 23647761

Quinten C, Martinelli F, Coens C, Sprangers MA, Ringash J, Gotay C, Bjordal K, Greimel E, Reeve BB, Maringwa J, Ediebah DE, Zikos E, King MT, Osoba D, Taphoorn MJ, Flechtner H, Schmucker-Von Koch J, Weis J, Bottomley A, Patient Reported Outcomes and Behavioral Evidence (PROBE) and the European Organization for Research and Treatment of Cancer (EORTC) Clinical Groups (2013)
A global analysis of multitrial data investigating quality of life and symptoms as prognostic factors for survival in different tumor sites
Cancer, 120 (2), 302-11
DOI 10.1002/cncr.28382, PubMed 24127333

Publications 2012

Amdal CD, Jacobsen AB, Guren MG, Bjordal K (2012)
Patient-reported outcomes evaluating palliative radiotherapy and chemotherapy in patients with oesophageal cancer: a systematic review
Acta Oncol, 52 (4), 679-90
DOI 10.3109/0284186X.2012.731521, PubMed 23190360

Andreassen TN, Klepstad P, Davies A, Bjordal K, Lundström S, Kaasa S, Dale O (2012)
Is oxycodone efficacy reflected in serum concentrations? A multicenter, cross-sectional study in 456 adult cancer patients
J Pain Symptom Manage, 43 (4), 694-705
DOI 10.1016/j.jpainsymman.2011.05.008, PubMed 22285284

Hofsø K, Miaskowski C, Bjordal K, Cooper BA, Rustøen T (2012)
Previous chemotherapy influences the symptom experience and quality of life of women with breast cancer prior to radiation therapy
Cancer Nurs, 35 (3), 167-77
DOI 10.1097/NCC.0b013e31821f5eb5, PubMed 21760482

Hofsø K, Rustøen T, Cooper BA, Bjordal K, Miaskowski C (2012)
Changes over time in occurrence, severity, and distress of common symptoms during and after radiation therapy for breast cancer
J Pain Symptom Manage, 45 (6), 980-1006
DOI 10.1016/j.jpainsymman.2012.06.003, PubMed 23026547

Publications 2011

Amdal CD, Jacobsen AB, Tausjø JE, Wiig JN, Warloe T, Sandstad B, Bjordal K (2011)
Palliative interventions and prognosis in patients with advanced esophageal cancer
Dis Esophagus, 24 (7), 502-9
DOI 10.1111/j.1442-2050.2010.01174.x, PubMed 21309923

Andreassen TN, Eftedal I, Klepstad P, Davies A, Bjordal K, Lundström S, Kaasa S, Dale O (2011)
Do CYP2D6 genotypes reflect oxycodone requirements for cancer patients treated for cancer pain? A cross-sectional multicentre study
Eur J Clin Pharmacol, 68 (1), 55-64
DOI 10.1007/s00228-011-1093-5, PubMed 21735164

Klepstad P, Fladvad T, Skorpen F, Bjordal K, Caraceni A, Dale O, Davies A, Kloke M, Lundström S, Maltoni M, Radbruch L, Sabatowski R, Sigurdardottir V, Strasser F, Fayers PM, Kaasa S, European Palliative Care Research Collaborative (EPCRC) and the European Association for Palliative Care Research Network (2011)
Influence from genetic variability on opioid use for cancer pain: a European genetic association study of 2294 cancer pain patients
Pain, 152 (5), 1139-1145
DOI 10.1016/j.pain.2011.01.040, PubMed 21398039

Publications 2010

Amdal CD, Jacobsen AB, Tausjø JE, Wiig JN, Warloe T, Karlsen KO, Sandstad B, Bjordal K (2010)
Radical treatment for oesophageal cancer patients unfit for surgery and chemotherapy. A 10-year experience from the Norwegian Radium Hospital
Acta Oncol, 49 (2), 209-18
DOI 10.3109/02841860903246573, PubMed 19929566

Andreassen TN, Klepstad P, Davies A, Bjordal K, Lundström S, Kaasa S, Dale O (2010)
Influences on the pharmacokinetics of oxycodone: a multicentre cross-sectional study in 439 adult cancer patients
Eur J Clin Pharmacol, 67 (5), 493-506
DOI 10.1007/s00228-010-0948-5, PubMed 21140139

Bjordal K (2010)
Kreft i øre-, nese- og halsregionen
In Kreftsykepleie, Akribe, Oslo, 487-497
PublikaID 65, ISBN 978-82-7950-144-2

Laugsand EA, Sprangers MA, Bjordal K, Skorpen F, Kaasa S, Klepstad P (2010)
Health care providers underestimate symptom intensities of cancer patients: a multicenter European study
Health Qual Life Outcomes, 8, 104
DOI 10.1186/1477-7525-8-104, PubMed 20858248

Utne I, Miaskowski C, Bjordal K, Paul SM, Rustoen T (2010)
The relationships between mood disturbances and pain, hope, and quality of life in hospitalized cancer patients with pain on regularly scheduled opioid analgesic
J Palliat Med, 13 (3), 311-8
DOI 10.1089/jpm.2009.0294, PubMed 20078225

Publications 2009

Ahlner-Elmqvist M, Bjordal K, Jordhøy MS, Kaasa S, Jannert M (2009)
Characteristics and implications of attrition in health-related quality of life studies in palliative care
Palliat Med, 23 (5), 432-40
DOI 10.1177/0269216309104057, PubMed 19304808

Bower WF, Vlantis AC, Chung TM, Cheung SK, Bjordal K, van Hasselt CA (2009)
Quality of life in head and neck cancer patients after surgical resection: translation into Cantonese and validation of the EORTC QLQ-H&N35
Acta Otolaryngol, 129 (7), 779-85
DOI 10.1080/00016480802398970, PubMed 18767001

Quinten C, Coens C, Mauer M, Comte S, Sprangers MA, Cleeland C, Osoba D, Bjordal K, Bottomley A, EORTC Clinical Groups (2009)
Baseline quality of life as a prognostic indicator of survival: a meta-analysis of individual patient data from EORTC clinical trials
Lancet Oncol, 10 (9), 865-71
DOI 10.1016/S1470-2045(09)70200-1, PubMed 19695956

Utne I, Miaskowski C, Bjordal K, Cooper BA, Valeberg BT, Rustøen T (2009)
Confirmatory factor analysis of the coping strategies questionnaire-revised in samples of oncology outpatients and inpatients with pain
Clin J Pain, 25 (5), 391-400
DOI 10.1097/AJP.0b013e318195ed9b, PubMed 19454872

Utne I, Miaskowski C, Bjordal K, Paul SM, Jakobsen G, Rustøen T (2009)
Differences in the use of pain coping strategies between oncology inpatients with mild vs. moderate to severe pain
J Pain Symptom Manage, 38 (5), 717-26
DOI 10.1016/j.jpainsymman.2009.03.005, PubMed 19775862

Publications 2008

Ahlner-Elmqvist M, Jordhøy MS, Bjordal K, Jannert M, Kaasa S (2008)
Characteristics and quality of life of patients who choose home care at the end of life
J Pain Symptom Manage, 36 (3), 217-27
DOI 10.1016/j.jpainsymman.2007.10.010, PubMed 18400462

Elmqvist MA, Jordhøy MS, Bjordal K, Kaasa S, Jannert M (2008)
Health-related quality of life during the last three months of life in patients with advanced cancer
Support Care Cancer, 17 (2), 191-8
DOI 10.1007/s00520-008-0477-2, PubMed 18581147

Nordgren M, Hammerlid E, Bjordal K, Ahlner-Elmqvist M, Boysen M, Jannert M (2008)
Quality of life in oral carcinoma: a 5-year prospective study
Head Neck, 30 (4), 461-70
DOI 10.1002/hed.20735, PubMed 18098303

Utne I, Miaskowski C, Bjordal K, Paul SM, Jakobsen G, Rustøen T (2008)
The relationship between hope and pain in a sample of hospitalized oncology patients
Palliat Support Care, 6 (4), 327-34
DOI 10.1017/S1478951508000527, PubMed 19006586

Valeberg BT, Miaskowski C, Hanestad BR, Bjordal K, Moum T, Rustøen T (2008)
Prevalence rates for and predictors of self-reported adherence of oncology outpatients with analgesic medications
Clin J Pain, 24 (7), 627-36
DOI 10.1097/AJP.0b013e31816fe020, PubMed 18716502

Valeberg BT, Miaskowski C, Hanestad BR, Bjordal K, Paul S, Rustøen T (2008)
Demographic, clinical, and pain characteristics are associated with average pain severity groups in a sample of oncology outpatients
J Pain, 9 (10), 873-82
DOI 10.1016/j.jpain.2008.05.001, PubMed 18571988

Publications 2007

Arraras JI, Kuljanic-Vlasic K, Bjordal K, Yun YH, Efficace F, Holzner B, Mills J, Greimel E, Krauss O, Velikova G, EORTC Quality of Life Group (2007)
EORTC QLQ-INFO26: a questionnaire to assess information given to cancer patients a preliminary analysis in eight countries
Psychooncology, 16 (3), 249-54
DOI 10.1002/pon.1047, PubMed 16858744

Bjordal K (2007)
Radiotherapy for head and neck cancer, indicatio and Techniques. Book review.
European Journal of Cancer Care, 16, 96
PublikaID 64

Loge JH, Bjordal K, Paulsen Ø, Kaasa S (2007)
Den palliative konsultasjon
In Palliasjon: nordisk lærebok, Gyldendal akademisk, Oslo, S. 63-73
BIBSYS 080196128

Valeberg BT, Rustøen T, Bjordal K, Hanestad BR, Paul S, Miaskowski C (2007)
Self-reported prevalence, etiology, and characteristics of pain in oncology outpatients
Eur J Pain, 12 (5), 582-90
DOI 10.1016/j.ejpain.2007.09.004, PubMed 18023377

Aass N, Bjordal K, Nordøy T (2007)
Systemisk tumorrettet behandling
In Palliasjon: nordisk lærebok, Gyldendal akademisk, Oslo, S. 457-479
BIBSYS 08021911x

Publications 2006

Loge JH, Bjordal K, Paulsen Ø (2006)
[Approaching patients who require palliative care]
Tidsskr Nor Laegeforen, 126 (4), 462-6
PubMed 16477286

Nordgren M, Jannert M, Boysen M, Ahlner-Elmqvist M, Silander E, Bjordal K, Hammerlid E (2006)
Health-related quality of life in patients with pharyngeal carcinoma: a five-year follow-up
Head Neck, 28 (4), 339-49
DOI 10.1002/hed.20334, PubMed 16287136

Aass N, Bjordal K, Tveit KM, Nordøy T (2006)
[Tumour-modifying therapy]
Tidsskr Nor Laegeforen, 126 (5), 628-32
PubMed 16505877

Publications 2005

Abendstein H, Nordgren M, Boysen M, Jannert M, Silander E, Ahlner-Elmqvist M, Hammerlid E, Bjordal K (2005)
Quality of life and head and neck cancer: a 5 year prospective study
Laryngoscope, 115 (12), 2183-92
DOI 10.1097/01.MLG.0000181507.69620.14, PubMed 16369164

Bjordal K, Aass N (2005)
Hvordan avgjøre om man skal avbryte eller unnlate å starte videre behandling?
In Uutholdelig liv. Filosofiske refleksjoner om selvmord, villet egenskade, eutanasi og lindrende behandling av døende (Herrestad, Mehlum, eds.), Gyldendal akademiske forlag
PublikaID 62

Publications 2004

Bjordal K (2004)
Impact of quality of life measurement in daily clinical practice
Ann Oncol, 15 Suppl 4, iv279-82
DOI 10.1093/annonc/mdh939, PubMed 15477321

Bjordal K, Aass N (2004)
[Palliative cytostatic treatment]
Tidsskr Nor Laegeforen, 124 (24), 3206-7
PubMed 15608767

Publications 2003

Nordgren M, Abendstein H, Jannert M, Boysen M, Ahlner-Elmqvist M, Silander E, Bjordal K, Hammerlid E (2003)
Health-related quality of life five years after diagnosis of laryngeal carcinoma
Int J Radiat Oncol Biol Phys, 56 (5), 1333-43
DOI 10.1016/s0360-3016(03)00292-x, PubMed 12873678

Publications 2002

Bottomley A, Vachalec S, Bjordal K, Blazeby J, Flechtner H, Ruyskart P (2002)
The development and utilisation of the European Organisation for research and treatment of cancer quality of life group item bank
Eur J Cancer, 38 (12), 1611-4
DOI 10.1016/s0959-8049(02)00125-9, PubMed 12142050

Evensen JF, Bjordal K, Knutsen BH, Olsen DR, Støre G, Tausjø JE (2002)
Side effects and quality of life after inadvertent radiation overdosage in brachytherapy of head-and-neck cancer
Int J Radiat Oncol Biol Phys, 52 (4), 944-52
DOI 10.1016/s0360-3016(01)02726-2, PubMed 11958887

Publications 2001

Bjordal K, Ahlner-Elmqvist M, Hammerlid E, Boysen M, Evensen JF, Biörklund A, Jannert M, Westin T, Kaasa S (2001)
A prospective study of quality of life in head and neck cancer patients. Part II: Longitudinal data
Laryngoscope, 111 (8), 1440-52
DOI 10.1097/00005537-200108000-00022, PubMed 11568582

Evensen JF, Bjordal K, Jacobsen AB, Løkkevik E, Tausjø JE (2001)
Effects of Na-sucrose octasulfate on skin and mucosa reactions during radiotherapy of head and neck cancers--a randomized prospective study
Acta Oncol, 40 (6), 751-5
DOI 10.1080/02841860152619188, PubMed 11765071

Fayers P, Bjordal K (2001)
Should quality-of-life needs influence resource allocation?
Lancet, 357 (9261), 978
DOI 10.1016/S0140-6736(00)04256-2, PubMed 11293639

Hammerlid E, Bjordal K, Ahlner-Elmqvist M, Boysen M, Evensen JF, Biörklund A, Jannert M, Kaasa S, Sullivan M, Westin T (2001)
A prospective study of quality of life in head and neck cancer patients. Part I: at diagnosis
Laryngoscope, 111 (4 Pt 1), 669-80
DOI 10.1097/00005537-200104000-00021, PubMed 11359139

Publications 2000

Bjordal K, de Graeff A, Fayers PM, Hammerlid E, van Pottelsberghe C, Curran D, Ahlner-Elmqvist M, Maher EJ, Meyza JW, Brédart A, Söderholm AL, Arraras JJ, Feine JS, Abendstein H, Morton RP, Pignon T, Huguenin P, Bottomly A, Kaasa S (2000)
A 12 country field study of the EORTC QLQ-C30 (version 3.0) and the head and neck cancer specific module (EORTC QLQ-H&N35) in head and neck patients. EORTC Quality of Life Group
Eur J Cancer, 36 (14), 1796-807
DOI 10.1016/s0959-8049(00)00186-6, PubMed 10974628

de Haes J, Curran D, Young T, Bottomley A, Flechtner H, Aaronson N, Blazeby J, Bjordal K, Brandberg Y, Greimel E, Maher J, Sprangers M, Cull A (2000)
Quality of life evaluation in oncological clinical trials - the EORTC model. The EORTC Quality of Life Study Group
Eur J Cancer, 36 (7), 821-5
DOI 10.1016/s0959-8049(00)00007-1, PubMed 10785585

Publications 1999

Bjordal K, Hammerlid E, Ahlner-Elmqvist M, de Graeff A, Boysen M, Evensen JF, Biörklund A, de Leeuw JR, Fayers PM, Jannert M, Westin T, Kaasa S (1999)
Quality of life in head and neck cancer patients: validation of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-H&N35
J Clin Oncol, 17 (3), 1008-19
DOI 10.1200/JCO.1999.17.3.1008, PubMed 10071296

Hammerlid E, Ahlner-Elmqvist M, Bjordal K, Biörklund A, Evensen J, Boysen M, Jannert M, Kaasa S, Sullivan M, Westin T (1999)
A prospective multicentre study in Sweden and Norway of mental distress and psychiatric morbidity in head and neck cancer patients
Br J Cancer, 80 (5-6), 766-74
DOI 10.1038/sj.bjc.6690420, PubMed 10360654

Ringdal K, Ringdal GI, Kaasa S, Bjordal K, Wisløff F, Sundstrøm S, Hjermstad MJ (1999)
Assessing the consistency of psychometric properties of the HRQoL scales within the EORTC QLQ-C30 across populations by means of the Mokken Scaling Model
Qual Life Res, 8 (1-2), 25-43
DOI 10.1023/a:1026419414249, PubMed 10457736

Publications 1998

Fayers PM, Groenvold M, Hand DJ, Bjordal K (1998)
Clinical impact versus factor analysis for quality of life questionnaire construction
J Clin Epidemiol, 51 (3), 285-6
DOI 10.1016/s0895-4356(97)00291-6, PubMed 9495694

Hjermstad MJ, Fayers PM, Bjordal K, Kaasa S (1998)
Health-related quality of life in the general Norwegian population assessed by the European Organization for Research and Treatment of Cancer Core Quality-of-Life Questionnaire: the QLQ=C30 (+ 3)
J Clin Oncol, 16 (3), 1188-96
DOI 10.1200/JCO.1998.16.3.1188, PubMed 9508207

Hjermstad MJ, Fayers PM, Bjordal K, Kaasa S (1998)
Using reference data on quality of life--the importance of adjusting for age and gender, exemplified by the EORTC QLQ-C30 (+3)
Eur J Cancer, 34 (9), 1381-9
DOI 10.1016/s0959-8049(98)00136-1, PubMed 9849421

Sprangers MA, Cull A, Groenvold M, Bjordal K, Blazeby J, Aaronson NK (1998)
The European Organization for Research and Treatment of Cancer approach to developing questionnaire modules: an update and overview. EORTC Quality of Life Study Group
Qual Life Res, 7 (4), 291-300
DOI 10.1023/a:1024977728719, PubMed 9610213

Publications 1997

Fayers PM, Hand DJ, Bjordal K, Groenvold M (1997)
Causal indicators in quality of life research
Qual Life Res, 6 (5), 393-406
DOI 10.1023/a:1018491512095, PubMed 9290306

Hammerlid E, Bjordal K, Ahlner-Elmqvist M, Jannert M, Kaasa S, Sullivan M, Westin T (1997)
Prospective, longitudinal quality-of-life study of patients with head and neck cancer: a feasibility study including the EORTC QLQ-C30
Otolaryngol Head Neck Surg, 116 (6 Pt 1), 666-73
DOI 10.1016/S0194-59989770246-8, PubMed 9215381

Hammerlid E, Bjordal K, Ahlner-Elmqvist M, Jannert M, Kaasa S, Sullivan M, Westin T (1997)
Prospective, Longitudinal Quality-of-Life Study of Patients With Head and Neck Cancer: A Feasibility Study Including the EORTC QLQ-C30
Otolaryngol Head Neck Surg, 116 (6), 666-673
DOI 10.1016/S0194-5998(97)70246-8, PubMed 29389273

Publications 1996

Bjordal K (1996)
Quality of life in patients treated for head and neck cancer: methodological and clinical issues
Norwegian Cancer Society and the Norwegian Radium Hospital, Department of Medical Oncology and Radiotherapy, [Oslo], 1 b. (flere pag.)
BIBSYS 96051001x, ISBN 82-993839-0-0

Bonomi AE, Bjordal K (1996)
Multilingual translation of the functional assessment of cancer therapy (FACT) quality of life measurement system
Rapid Science Publishers, [Oxford], S. 309-320.
BIBSYS 981576524

Bonomi AE, Cella DF, Hahn EA, Bjordal K, Sperner-Unterweger B, Gangeri L, Bergman B, Willems-Groot J, Hanquet P, Zittoun R (1996)
Multilingual translation of the Functional Assessment of Cancer Therapy (FACT) quality of life measurement system
Qual Life Res, 5 (3), 309-20
DOI 10.1007/BF00433915, PubMed 8763799

Publications 1995

Bjordal K, Freng A, Thorvik J, Kaasa S (1995)
Patient self-reported and clinician-rated quality of life in head and neck cancer patients: a cross-sectional study
Eur J Cancer B Oral Oncol, 31B (4), 235-41
DOI 10.1016/0964-1955(95)00010-f, PubMed 7492919

Bjordal K, Kaasa S (1995)
Psychological distress in head and neck cancer patients 7-11 years after curative treatment
Br J Cancer, 71 (3), 592-7
DOI 10.1038/bjc.1995.115, PubMed 7880743

Bjordal K, Mastekaasa A, Kaasa S (1995)
Self-reported satisfaction with life and physical health in long-term cancer survivors and a matched control group
Eur J Cancer B Oral Oncol, 31B (5), 340-5
DOI 10.1016/0964-1955(95)00039-9, PubMed 8704653

Hjermstad MJ, Fossa SD, Bjordal K, Kaasa S (1995)
Test/retest study of the European Organization for Research and Treatment of Cancer Core Quality-of-Life Questionnaire
J Clin Oncol, 13 (5), 1249-54
DOI 10.1200/JCO.1995.13.5.1249, PubMed 7738629

Kaasa S, Bjordal K, Aaronson N, Moum T, Wist E, Hagen S, Kvikstad A (1995)
The EORTC core quality of life questionnaire (QLQ-C30): validity and reliability when analysed with patients treated with palliative radiotherapy
Eur J Cancer, 31A (13-14), 2260-3
DOI 10.1016/0959-8049(95)00296-0, PubMed 8652253

Publications 1994

Bjordal K, Ahlner-Elmqvist M, Tollesson E, Jensen AB, Razavi D, Maher EJ, Kaasa S (1994)
Development of a European Organization for Research and Treatment of Cancer (EORTC) questionnaire module to be used in quality of life assessments in head and neck cancer patients. EORTC Quality of Life Study Group
Acta Oncol, 33 (8), 879-85
DOI 10.3109/02841869409098450, PubMed 7818919

Bjordal K, Kaasa S, Mastekaasa A (1994)
Quality of life in patients treated for head and neck cancer: a follow-up study 7 to 11 years after radiotherapy
Int J Radiat Oncol Biol Phys, 28 (4), 847-56
DOI 10.1016/0360-3016(94)90104-x, PubMed 8138437

Publications 1993

Kaasa S, Kragh-Jensen E, Bjordal K, Lund E, Evensen JF, Vermund H, Monge O, Boehler P (1993)
Prognostic factors in patients with nasopharyngeal carcinoma
Acta Oncol, 32 (5), 531-6
DOI 10.3109/02841869309096113, PubMed 8217237

Sprangers MA, Cull A, Bjordal K, Groenvold M, Aaronson NK (1993)
The European Organization for Research and Treatment of Cancer. Approach to quality of life assessment: guidelines for developing questionnaire modules. EORTC Study Group on Quality of Life
Qual Life Res, 2 (4), 287-95
DOI 10.1007/BF00434800, PubMed 8220363

Publications 1992

Bjordal K, Kaasa S (1992)
Psychometric validation of the EORTC Core Quality of Life Questionnaire, 30-item version and a diagnosis-specific module for head and neck cancer patients
Acta Oncol, 31 (3), 311-21
DOI 10.3109/02841869209108178, PubMed 1622651