REILLY ASSOCIATES
 WPAI References

Academy for Health and Productivity Measurement.  Productivity gains from RX treatment of allergies outweigh the cost of non-sedating antihistamines.  Acacdemy Briefs.

American College of Allergy, Asthma and Immunology.  Instruments for measuring Quality of life and performance impairment in allergic rhinitis.  Ann Allergy Asthma Immunol 2001; 86(5): insert.

Andréasson E, Svensson K, Berggren F. The validity of the work productivity and activity impairment questionnaire for patients with asthma (WPAI-asthma): Results from a web-based study. Value in Health 2003;6(6):780

Andréasson E, Svensson K, Berggren F. The validity of the work productivity and activity impairment questionnaire for patients with asthma (WPAI-asthma): Results from a web-based study.Presented ISPOR 6th Annual European Congress, 9-11 November 2003, Barcelona, Spain.

Bousquet J, Neukirch F, Bousquet PJ, Gehano P, Klossek JM, Le Gal M, Allaf B.
Severity and impairment of allergic rhinitis in patients consulting in primary
care. J Allergy Clin Immunol. 2006;117(1):158-162. Epub 2005 Dec 2. 

Bousquet J, Zuberbier T, Canonica GW, Fokkens WJ, Gopalan G, Shekar T. Randomized controlled trial of desloratadine for persistent allergic rhinitis: Correlations between symptom improvement and quality of life. Allergy Asthma Proc. 2013 May;34(3):274-82.

Calhoun WJ, Haselkorn T, Mink DR, Miller DP, Dorenbaum A, Zeiger RS. Clinical Burden and Predictors of Asthma Exacerbations in Patients on Guideline-based Steps 4-6 Asthma Therapy in the TENOR Cohort. J Allergy Clin Immunol Pract. 2014 Mar-Apr;2(2):193-200.

Chen H, Blanc PD, Chawla A, Hayden M, Bleeker ER, Lee JH.  Assessing productivity impairment in patients with severe or difficult to treat asthma: validation of the Work Productivity and Activity Impairment- Asthma questionnaire.  J Allergy Clin Immunol 2006; 117(2):S181.

Chen H, Blanc PD, Hayden ML, Bleecker ER, Chawla A, Lee JH, TENOR Study Group.  Assessing productivity loss and activity impairment in severe or difficult-to-treat asthma. Value in Health (OnlineEarly Articles). doi:10.1111/j.1524-4733.2007.00229.x.

Crawford B, Okuda M, Leahy MJ.  The RQLQ AND WPAI-AS questionnaires are valid, reliable measures of QOL in Japanese pateints with seasonal allergic rhinits. Presented ISPOR First Asia-Pacific Conference, 1-3 September 2003, Kobe, Japan.

de la Hoz Caballer B, Rodríguez M, Fraj J, Cerecedo I, Antolín-Amérigo D, Colás C. Allergic rhinitis and its impact on work productivity in primary care practice and a comparison with other common diseases: The cross-sectional study to evaluate work productivity in allergic rhinitis compared with other common diseases (CAPRI) study. Am J Rhinol Allergy. 2012 Sep;26(5):390-4.

Dean BB, Calimlim BC, Sacco P, Aguilar D, Maykut R, Tinkelman D. Uncontrolled 
asthma: assessing quality of life and productivity of children and their caregivers using a cross-sectional Internet-based survey. Health Qual Life Outcomes. 2010 Sep 8;8:96. 

Dean BB, Calimlim B, Aguilar D, Sacco P, Maykut R, Tinkelman D, impact of uncontrolled pediatric asthma on child and caregiver productivity. ISPOR 13th Annual International Meeting, Toronto, Ontario, Canada, May 3, 2008.

Demoly P, Annunziata K, Gubba E, Adamek L. Repeated cross-sectional survey of 
patient-reported asthma control in Europe in the past 5 years. Eur Respir Rev.
2012 Mar 1;21(123):66-74.

Demoly P, Gueron B, Annunziata K, Adamek L, Walters RD. Update on asthma control in five European countries: results of a 2008 survey. Eur Respir Rev. 2010;19(116):150-7.

Fairchild CJ, Meltzer EO, Roland PS, Wells D, Drake M, Wall GM.  Comprehensive report of the efficacy, safety, quality of life, and work impact of Olopatadine 0.6% and Olopatadine 0.4% treatment in patients with seasonal allergic rhinitis.
Allergy Asthma Proc. 2007 Nov-Dec;28(6):716-23.

Kim LS, Riedlinger JE, Baldwin CM, Hilli L, Khalsa SV, Messer SA, Waters RF.
Treatment of Seasonal Allergic Rhinitis Using Homeopathic Preparation of Common
Allergens in the Southwest Region of the US: A Randomized, Controlled Clinical
Trial.  Ann Pharmacother 2005; 39(4):736-8.

Mansfield LE, Hampel F, Haeusler JM, Georges G. Study of levocetirizine in
seasonal allergic rhinitis. Curr Med Res Opin. 2010 Jun;26(6):1269-75. 

Meltzer EO, Casale TB, Nathan RA, Thompson AK.  Once daily fexofenadine HCI improves quality of life and reduces work and activity impairment in patients with season allergic rhinitis.  Ann Allergy Asthma Immunol, 1999; 83(4):311-7.

Meltzer EO, Munafo DA, Chung W, Gopalan G, Varghese ST. Intranasal mometasone 
furoate therapy for allergic rhinitis symptoms and rhinitis-disturbed sleep. Ann 
Allergy Asthma Immunol. 2010: 105(1):65-74.

Miller DP, Tom G, Rasouliyan L, Chipps B.  Patient-reported outcomes among omalizumab and salmeterol/fluticasone combination therapy patients. J Asthma. 2009 Mar;46(2):179-85.

Murray J, Nathan R, Bronsky E, Olufade AO, Chapman D, Kramer B.  Cetirizine in the management of seasonal allergic rhinitis: impact on patient health-related quality of life (HRQL), work productivity and activity impairment (WPAI).  Presented 1999 Annual Meeting of the American College of Allergy Asthma and Immunology (ACAAI), November 12-17, 1999.

Murray JJ, Nathan RA, Bronsky EA, Olufade AO, Chapman D, Kramer B.  Comprehensive evaluation of cetirizine in the management of seasonal allergic rhinitis: impact on symptoms, quality of life, productivity, and activity impairment.  Allergy Asthma Proc 2002,23 (6):391-8.

Okuda M, Crawford B, Juniper E, Leahy MJ. [Preparation of Japanese versions of rinoconjunctivitis quality of life questionnaire (RQLQ) and work productivity and activity impairment questionnaire (WPAI-AS)] Arerugi. 2003 Jul;52 Suppl 1:70-86. Japanese. 

Okubo K, Gotoh M, Shimada K, Ritsu M, Okuda M, Crawford B. Fexofenadine improves the quality of life and work productivity in Japanese patients with seasonal allergic rhinitis during the peak cedar pollinosis season.  Int Arch Allergy Immunol. 2005;136(2):148-154 [Epub ahead of print].

Reilly MC, Tanner A, Meltzer EO.  Allergy impairment questionnaires: validation studies.  J Allergy Clin Immunology 1996;97:1:3:430.

Reilly MC, Tanner A, Meltzer EO. Work, classroom and activity impairment instruments: validation studies in allergic rhinitis.  Clinical Drug Investigations 1996; 11(5):278-288.  Please note there is an error in the sample size calculations. We state (page 287) that 201 patients per treatment group would be required to detect a 5% difference in overall work impairment and 1,256 patients would be required to detect a 2% difference.  The numbers should be 190 patients and 1,180 patients, respectively.  For overall classroom impairment, the sample size per treatment group should be 290 patients, not 192 patients.

Segall N, Gawchik S, Georges G, Haeusler JM. Efficacy and safety of levocetirizine in improving symptoms and health-related quality of life in US adults with seasonal allergic rhinitis: a randomized, placebo-controlled study.  Ann Allergy Asthma Immunol. 2010;104(3):259-67.

Stull DE, Krouse J, Meltzer EO, Roberts L, Kim S, Frank L, Naclerio R, Lund V,
Long A.  Development and validation of the Congestion Quantifier seven-item test (CQ7): a screening tool for nasal congestion. Value Health. 2007 Nov-Dec;10(6):457-65.

Sullivan SD, Wertz DA, Pollack M, Bohn R, Sacco P.  Impact of asthma control on sleep, attendance at work, normal activities and burden of illness. Academy of Managed Care Pharmacy, 20th annual meetting, April 16-18, 2008: San Francisco, CA.

Tan H, Sarawate C, Singer J, Elward K, Cohen RI, Smart BA, Busk MF, Lustig J, O'Brien JD, Schatz M. Impact of asthma controller medications on clinical,economic, and patient-reported outcomes. Mayo Clin Proc 2009;84(8):675-84.

Tanner LA, Reilly M, Meltzer EO, Bradford JE, Mason J.  Effect of fexofenadine HCI on quality of life and work, classroom and daily activity impairment in patients with seasonal allergic rhinitis.  Am J Man Care 1999; 5 (suppl):S235-S247.

Vietri J, Burslem K, Su J. Poor Asthma Control Among US Workers: Health-Related Quality of Life, Work Impairment, and Health Care Use. J Occup Environ Med. 2014 Mar 21. 

Virchow JC, Kay S, Demoly P, Mullol J, Canonica W, Higgins V. Impact of ocular
symptoms on quality of life (QoL), work productivity and resource utilisation in 
allergic rhinitis patients - an observational, cross sectional study in four countries in Europe. J Med Econ. 2011;14(3):305-14. Epub 2011 Apr 14.

Williams SA, Wagner S, Kannan H, Bolge SC. The association between asthma
control and health care utilization, work productivity loss and health-related
quality of life. J Occup Environ Med. 2009;51(7):780-5. 

Asthma and Allergies


Caregivers
Dean BB, Calimlim BC, Sacco P, Aguilar D, Maykut R, Tinkelman D. Uncontrolled 
asthma: assessing quality of life and productivity of children and their caregivers using a cross-sectional Internet-based survey. Health Qual Life Outcomes. 2010 Sep 8;8:96. 

Dean BB, Calimlim B, Aguilar D, Sacco P, Maykut R, Tinkelman D, impact of uncontrolled pediatric asthma on child and caregiver productivity. ISPOR 13th Annual International Meeting, Toronto, Ontario, Canada, May 3, 2008.

Giovannetti ER, Wolff JL, Frick KD, Boult C. Construct Validity of the Work
Productivity and Activity Impairment Questionnaire across Informal Caregivers of 
Chronically Ill Older Patients. Value Health. 2009 Apr 23. [Epub ahead of print]

Goren A, Gilloteau I, Lees M, Dacosta Dibonaventura M. Quantifying the burden of informal caregiving for patients with cancer in Europe. Support Care Cancer. 2014 Feb 5.

Reilly M, Mitchell I, Gooch K, Vo P, Virabhak S, Lorimer M, Ruff M,Seidenberg J,Khong H Preliminary Validation of the Work Productivity Activity Impairment (WPAI) in Caregivers of Children Hospitalized for Respiratory Illness (WPAI:CHRI) in Germany and Canada. Poster presentation at ISPOR Asia, Taipei, Taiwan, Sept 4 2012. 

Reilly MC, Relkin N, Zbrozek A. Development and testing of a new outcome measure of relationship between patients with Alheimer's disease and their partners.  Am J Alzheimer's Dis and Other Dementias. 2006; 21(4):249-257.

Wolff JL, Giovannetti ER, Boyd CM, Reider L, Palmer S, Scharfstein D, Marsteller J, Wegener ST, Frey K, Leff B, Frick KD, Boult C. Effects of Guided Care on Family Caregivers. Gerontologist. 2009 Aug 26. [Epub ahead of print]
Crohn's Disease
Binion DG, Louis E, Oldenburg B, Mulani P, Bensimon AG, Yang M, Chao J. Effect
of adalimumab on work productivity and indirect costs in moderate to severe Crohn's disease: A meta-analysis. Can J Gastroenterol. 2011 Sep;25(9):492-6.

Brown M, Feagan B, Gerlier L, Schreiber S. Treatment with certolizumob pegol 400 mg improves work productivity and daily activities in patients with Crohn’s disease: PRECISE 2 data. Amer J Gastroent. 2006: 101 (s2). (Abstract)

Brown M, Feagan B, Gerlier L, Schreiber S. Treatment with certolizumob pegol 400 mg improves work productivity and daily activities in patients with Crohn’s disease: PRECISE 2 data.  Presentation at American College of Gastroenterology (ACG), 71st Annual Scientific Meeting, October 20-25 2006, Las Vegas, NV.

Colombel JF, Rutgeerts PJ, Sandborn WJ, Yang M, Camez A, Pollack PF, Thakkar RB, Robinson AM, Chen N, Mulani PM, Chao J. Adalimumab Induces Deep Remission in Patients with Crohn's Disease. Clin Gastroenterol Hepatol. 2013 Jul 12. 

Feagan BG, Reilly MC, Gerlier L, Brabant Y, Brown M, Schreiber S. Clinical
trial: the effects of certolizumab pegol therapy on work productivity in patients
with moderate-to-severe Crohn's disease in the PRECiSE 2 study. Aliment Pharmacol
Ther. 2010 Mar 18. [Epub ahead of print]

Feagan BG, Sandborn WJ, Wolf DC, Coteur G, Purcaru O, Brabant Y, Rutgeerts PJ.
Randomised clinical trial: improvement in health outcomes with certolizumab pegol
in patients with active Crohn's disease with prior loss of response to infliximab. Aliment Pharmacol Ther. 2011;33(5):541-50.

Feagan B, Schreiber S, Selke B, Reilly MC, Sanborn W.  Moderate to severe Crohn's disease induces high productivity losses: Work Productivity and Activity Impairment (WPAI) baseline data from the PRECiSE program.  Digestive Disease Week.  May 20-25, 2006, Los Angeles, CA.

Louis E, Löfberg R, Reinisch W, Camez A, Yang M, Pollack PF, Chen N, Chao J, Mulani PM. Adalimumab improves patient-reported outcomes and reduces indirect costs in patients with moderate to severe Crohn's disease: Results from the CARE trial. J Crohns Colitis. 2012 Apr 3. [Epub ahead of print]

Reilly MC, Brown MCJ, Brabant Y, et al. Minimally important difference for WPAI:CD scores: Defining relevant impact on work productivity in active Crohn’s disease (Abst 962). Presented at the American College of Gastroenterology Annual Scientific Meeting; Philadelphia. October 12 to 17, 2007.

Reilly MC, Gerlier L, Brabant Y, Brown, M. Validity, reliability and responsiveness of the Work Productivity and Activity Impairment questionnaire in Crohn’s disease. Clin Ther. 2008; 30(2):393-404.

Reilly MC, Gerlier L, Brown, M. Discriminant validity of the Work Productivity and Activity Impairment questionnaire in patient’s with Crohn’s disease. Value in Health. 2006; 9(6):A246. (Abstract.)

Reilly MC, Gerlier L, Brown, M. Discriminant validity of the Work Productivity and Activity Impairment questionnaire in patient’s with Crohn’s disease. Presented ISPOR 9th Annual European Congress, Copenhagen, Denmark, October 28-30, 2006.

Thomsen OØ, Brown M, Purcaru, Schreiber.  Relationship between work productivity, daily activities and clinical endpoints in Crohn’s disease: data from Precise 2. Amer J Gastroent. 2006:101(s2). (Abstract)

Thomsen OØ, Brown M, Purcaru, Schreiber.  Relationship between work productivity, daily activities and clinical endpoints in Crohn’s disease: data from Precise 2. Presentation at American College of Gastroenterology (ACG), 71st Annual Scientific Meeting, October 20-25 2006, Las Vegas, NV.

Vergara M, Montserrat A, Casellas F, Maudsley M, Gallardo O, Ricart E, Calvet 
X. Validation of the Spanish Work Productivity and Activity impairment
questionnaire: Crohn's disease version. Eur J Gastroenterol Hepatol. 2009 Apr 28.
[Epub ahead of print] PubMed PMID: 19404204.

Wladysiuk M., Bebrysz M., Fedyna M., Haldas M., Rutkowski J. What determines work productivity loss in rheumatoid arthritis (RA), Crohn’s disease (CD) and psoriasis (Ps) in Poland. Results of Move to Work (M2W) study. Presented ISPOR 19th Annual International Meeting, May 31-June 4 2014, Montreal, Canada.

Wladysiuk M., Fedyna M., Haldas M., Rutkowski J., Bebrysz M. Indirect costs of rheumatoid arthritis, Crohn’s disease and psoriasis in Poland. Presented HTAi 11th Annual Meeting, Jun 16-18, Washington DC, USA.















Anemia


Boccia R, Lillie T, Tomita D, Balducci L. The effectiveness of darbepoetin alfa administered every 3 weeks on hematologic outcomes and quality of life in older patients with chemotherapy-induced anemia. Oncologist. 2007 (5):584-93. 
Ankylosing Spondylitis
Ariza-Ariza R, Hernández-Cruz B, Navarro-Compán V, Leyva Pardo C, Juanola X, Navarro-Sarabia F. A comparison of telephone and paper self-completed questionnaires of main patient-related outcome measures in patients with ankylosing spondylitis and psoriatic arthritis. Rheumatol Int. 2013 Jun 21.

Boonen A, Boone C, Albert A, Mielants H. Understanding Limitations in At-work Productivity in Patients with Active Ankylosing Spondylitis: The Role of Work-related Contextual Factors. J Rheumatol. 2015 Jan;42(1):93-100.

Haibel H, Song IH, Rudwaleit M, Listing J, Hildemann S, Sieper J.  Multicenter open-label study with infliximab in active ankylosing spondylitis over 28 weeks in daily practice. Clin Exp Rheumatol. 2008;26(2):247-52.

Reilly MC, Gooch KL, Wong RL, Kupper H, van der Heijde D,  Validity, reliability and responsiveness of the Work Productivity and Activity Impairment Questionnaire in ankylosing spondylitis . Rhuematology 2010; Jan 25. [Epub ahead of print].

Rudwaleit M, Gooch K, Michel B, Herold M, Thörner A, Wong R, Kron M, Chen N,
Kupper H. Adalimumab Improves Sleep and Sleep Quality in Patients with Active
Ankylosing Spondylitis. J Rheumatol. 2010 Oct 15. [Epub ahead of print]
Cancer
Cleeland CS, Mayer M, Dreyer NA, Yim YM, Yu E, Su Z, Mun Y, Sloan JA, Kaufman PA. Impact of symptom burden on work-related abilities in patients with locally recurrent or metastatic breast cancer: Results from a substudy of the VIRGO observational cohort study. Breast. 2014 Sep 2.

Courneya KS, Booth CM, Gill S, O’Brien P, Vardy J et al. The Colon Health and Life-Long Exercise Change trial: a randomized trial of the National Cancer Institute of Canada Clinical Trials Group.  Curr Oncol. 2008 December; 15(6): 271–278. 

Frederix GW, Quadri N, Hövels AM, van de Wetering FT, Tamminga H, Schellens JH, Lloyd AJ. Utility and Work Productivity Data for Economic Evaluation of Breast Cancer Therapies in the Netherlands and Sweden. Clin Ther. 2013 Mar 28. doi:pii: S0149-2918(13)00119-7.  [Epub ahead of print]

Goren A, Gilloteau I, Lees M, Dacosta Dibonaventura M. Quantifying the burden of informal caregiving for patients with cancer in Europe. Support Care Cancer. 2014 Feb 5.

Martins LC, Ferreira Filho C, Del Giglio A, Munhoes DA, Trevizan LL, Herbst
LG, Viera Mda C, Taranto P, Pachon SC. [Professional or household performance of 
patients with breast cancer undergoing chemotherapy.]. Rev Assoc Med Bras. 2009;55(2):158-62. Portuguese. 
Lumry WR, Castaldo AJ, Vernon MK, Blaustein MB, Wilson DA, Horn PT. The
humanistic burden of hereditary angioedema: Impact on health-related quality of life, productivity, and depression. Allergy Asthma Proc. 2010;31(5):407-14.

Wilson DA, Bork K, Shea EP, Rentz AM, Blaustein MB, Pullman WE. Economic costs associated with acute attacks and long-term management of hereditary angioedema. Ann Allergy Asthma Immunol. 2010;104(4):314-20.
Angioedema
Arthritis
Bae SC, Gun SC, Mok CC, Khandker R, Nab HW, Koenig AS, Vlahos B, Pedersen R,
Singh A. Improved health outcomes with Etanercept versus usual DMARD therapy in
an Asian population with established rheumatoid arthritis. BMC Musculoskelet
Disord. 2013 Jan 8;14(1):13. [Epub ahead of print]

Bansback N, Zhang W, Walsh D, Kiely P, Williams R, Guh D, Anis A, Young A. Factors associated with absenteeism, presenteeism and activity impairment in patients in the first years of RA. Rheumatology (Oxford). 2011 Dec 16. [Epub ahead of print]

Braakman-Jansen LM, Taal E, Kuper IH, van de Laar MA. Productivity loss due to
absenteeism and presenteeism by different instruments in patients with RA and subjects without RA. Rheumatology (Oxford). 2011 Dec 16. [Epub ahead of print]

Bushmakin AG, Cappelleri JC, Taylor-Stokes G, Sayers J, Sadosky A, Carroll D, Gosden T, Emery P. Relationship between patient-reported disease severity and other clinical outcomes in osteoarthritis: a European perspective. J Med Econ. 2011 May 17. [Epub ahead of print]

Chaparro Del Moral R, Rillo OL, Casalla L, Morón CB, Citera G, Cocco JA, Correa Mde L, Buschiazzo E, Tamborenea N, Mysler E, Tate G, Baños A, Herscovich N. Work productivity in rheumatoid arthritis: relationship with clinical and radiological features. Arthritis. 2012;2012:137635. Epub 2012 Dec 19.

da Rocha Castelar Pinheiro G, Khandker RK, Sato R, Rose A, Piercy J. Impact of
rheumatoid arthritis on quality of life, work productivity and resource utilisation: an observational, cross-sectional study in Brazil. Clin Exp Rheumatol. 2013 Jan 16. [Epub ahead of print]

Dibonaventura MD, Gupta S, McDonald M, Sadosky A, Pettitt D, Silverman S.
Impact of self-rated osteoarthritis severity in an employed population: Cross-sectional analysis of data from the national health and wellness survey. Health Qual Life Outcomes. 2012 Mar 15;10:30. 

Di Bonaventura MD, Gupta S, McDonald MM, Sadosky A. Evaluating the health and 
economic impact of osteoarthritis pain in the workforce: results from the National Health and Wellness Survey. BMC Musculoskelet Disord. 2011 Apr 28;12(1):83. [Epub ahead of print]

Hone D, Cheng A, Watson C, Huang B, Bitman B, Huang XY, Gandra SR. Impact of
etanercept on work and activity impairment in employed moderate to severe rheumatoid arthritis patients in the United States. Arthritis Care Res (Hoboken). 2013 Apr 1. [Epub ahead of print]

Lambert J, Hansen BB, Arnould B, Grataloup G, Guillemin I, Højbjerre L, Strandberg-Larsen M, Reilly MC. Linguistic Validation into 20 Languages and Content Validity of the Rheumatoid Arthritis-Specific Work Productivity and Activity Impairment Questionnaire. Patient. 2014 Mar 27. 

Machado DA, Guzman RM, Xavier RM, Simon JA, Mele L, Pedersen R, Ferdousi T, Koenig AS, Kotak S, Vlahos B. Open-label observation of addition of etanercept versus a conventional disease-modifying antirheumatic drug in subjects with active rheumatoid arthritis despite methotrexate therapy in the latin american region. J Clin Rheumatol. 2014 Jan;20(1):25-33. 

Pavelka K, Szekanecz Z, Damjanov N, Majdan M, Nasonov E, Mazurov V, Fabo T,
Bananis E, Jones H, Szumski A, Tang B, Kotak S, Koenig AS, Vasilescu R. Induction
of response with etanercept-methotrexate therapy in patients with moderately active rheumatoid arthritis in Central and Eastern Europe in the PRESERVE study. Clin Rheumatol. 2013 May 11.

Radner H, Smolen JS, Aletaha D. Remission in rheumatoid arthritis: benefit over low disease activity in patient reported outcomes and costs. Arthritis Res Ther. 2014 Feb 21;16(1):R56. 

Stockl KM, Shin JS, Lew HC, Zakharyan A, Harada AS, Solow BK, Curtis BS.
Outcomes of a rheumatoid arthritis disease therapy management program focusing on
medication adherence. J Manag Care Pharm. 2010;16(8):593-604.

Tillett W, Shaddick G, Askari A, Cooper A, Creamer P, Clunie G, Helliwell PS, Kay L, Korendowych E, Lane S, Packham J, Shaban R, Williamson L, McHugh N. Factors influencing work disability in psoriatic arthritis: first results from a large UK multicentre study. Rheumatology (Oxford). 2014 Aug 13. 

Wladysiuk M., Fedyna M., Rutkowski J., Haldas M., Bebrysz M. Work productivity loss due to rheumatoid arthritis (RA) in Poland. Results of cross-sectional study of outpatients with chronic inflammatory diseases and comparison with selected studies. Presented ISPOR 16th Annual European Congress, Nov 2-6 2013, Dublin, Ireland.

Wladysiuk M., Bebrysz M., Fedyna M., Haldas M., Rutkowski J. What determines work productivity loss in rheumatoid arthritis (RA), Crohn’s disease (CD) and psoriasis (Ps) in Poland. Results of Move to Work (M2W) study. Presented ISPOR 19th Annual International Meeting, May 31-June 4 2014, Montreal, Canada.

Wladysiuk M., Fedyna M., Haldas M., Rutkowski J., Bebrysz M. Indirect costs of rheumatoid arthritis, Crohn’s disease and psoriasis in Poland. Presented HTAi 11th Annual Meeting, Jun 16-18, Washington DC, USA.

Zhang W, Bansback N, Boonen A, Young A, Singh A, Anis AH. Validity of the Work
Productivity and Activity Impairment questionnaire - General Health version (WPAI-GH) in patients with rheumatoid arthritis. Arthritis Res Ther. 2010;12(5):R177.

Zhang W, Gignac MA, Beaton D, Tang K, Anis AH; Canadian Arthritis Network Work
Productivity Group. Productivity loss due to presenteeism among patients with arthritis: estimates from 4 instruments. J Rheumatol. 2010;37(9):1805-14. Epub 2010 Jul 1.