References
- World Health OrganizationWorld Health Statistics2008 [updated 2008]. Available from: http://www.who.int/whosis/whostat/EN_WHS08_Full.pdfAccessed on October 30, 2016
- WheatonAGCunninghamTJFordESCroftJBEmployment and activity limitations among adults with chronic obstructive pulmonary disease–United States, 2013MMWR Morb Mortal Wkly Rep2015641128929525811677
- WaschkiBKirstenAHolzOPhysical activity is the strongest predictor of all-cause mortality in patients with COPD: a prospective cohort studyChest2011140233134221273294
- O’DonnellDEImpacting patient-centred outcomes in COPD: breathlessness and exercise toleranceEur Resp Rev200615993741
- Global Initiative for Chronic Obstructive Lung DiseaseGlobal Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD); 2016 Available from: http://www.goldcopd.org/2016Accessed on October 30, 2016
- AbuDaggaASunSXTanHSolemCTHealthcare utilization and costs among chronic bronchitis patients treated with maintenance medications from a US managed care populationJ Med Econ201316342142923336296
- AndersonPBenfordMHarrisNKaravaliMPiercyJReal-world physician and patient behaviour across countries: disease-specific programmes – a means to understandCurr Med Res Opin200824113063307218826746
- ReillyMCZbrozekASDukesEMThe validity and reproducibility of a work productivity and activity impairment instrumentPharmacoeconomics19934535336510146874
- JonesPWTabbererMChenWHCreating scenarios of the impact of COPD and their relationship to COPD Assessment Test (CAT™) scoresBMC Pulm Med2011114221835018
- HanMKMuellerovaHCurran-EverettDGOLD 2011 disease severity classification in COPDGene: a prospective cohort studyLancet Respir Med201311435024321803
- PriceDBBakerCLZouKHHigginsVSBaileyJTPikeJSReal-world characterization and differentiation of the Global Initiative for Chronic Obstructive Lung Disease strategy classificationInt J Chron Obstruct Pulmon Dis2014955156124920893
- KarlohMFleigMAMauriciRPizzichiniMMJonesPWPizzichiniEThe COPD Assessment Test: what do we know so far?: a systematic review and meta-analysis about clinical outcomes prediction and classification of patients into GOLD stagesChest2016149241342526513112
- JonesPWAdamekLNadeauGBanikNComparisons of health status scores with MRC grades in COPD: implications for the GOLD 2011 classificationEur Respir J201342364765423258783
- BarnesNCalverleyPMKaplanARabeKFChronic obstructive pulmonary disease and exacerbations: patient insights from the global Hidden Depths of COPD surveyBMC Pulm Med2013135423971625
- DongYHHsuCLLiYYChangCHLaiMSBronchodilators use in patients with COPDInt J Chron Obstruct Pulmon Dis2015101769177926366069
- CaoGLiJLiLUse of nonprescription medicines by patients with COPD: a survey in Chongqing Municipality, ChinaChron Respir Dis201292778122441338
- PasqualeMKSunSXSongFHartnettHJStemkowskiSAImpact of exacerbations on health care cost and resource utilization in chronic obstructive pulmonary disease patients with chronic bronchitis from a predominantly Medicare populationInt J Chron Obstruct Pulmon Dis2012775776423152680
- SolemCTSunSXSudharshanLMacahiligCKatyalMGaoXExacerbation-related impairment of quality of life and work productivity in severe and very severe chronic obstructive pulmonary diseaseInt J Chron Obstruct Pulmon Dis2013864165224376348
- FeaganBGSandbornWJWolfDCRandomised clinical trial: improvement in health outcomes with certolizumab pegol in patients with active Crohn’s disease with prior loss of response to infliximabAliment Pharmacol Ther201133554155021223344