References
- HigginsPDJohansonJFEpidemiology of constipation in North America: a systematic reviewAm J Gastroenterol20049975075915089911
- Guidance for Industry Patient-Reported Outcome Measures: Use in Medical Product Development to Support Labeling ClaimsUS Department of Health and Human Services, Food and Drug Administration, Center for Drug Evaluation and Research (CDER), Center for Biologics Evaluation and Research (CBER), Center for Devices and Radiological Health (CDRH)2009 Available from: http://www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/UCM193282.pdfAccessed March 24, 2010
- LemboAJKurtzCBMacdougallJEEfficacy of linaclotide for patients with chronic constipationGastroenterology201013888689520045700
- LemboAJSchneierHAShiffSJTwo randomized trials of linaclotide for chronic constipationN Engl J Med201136552753621830967
- Linzess [prescribing information]St.Louis, MOForest Pharmaceuticals, IncCambridge, MAIronwood Pharmaceuticals, Inc82014 Available from: http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/202811s000lbl.pdfAccessed August 4, 2014
- HeatonKWO’DonnellLJAn office guide to whole-gut transit time. Patients’ recollection of their stool formJ Clin Gastroenterol199419128307930429
- MarquisPDe La LogeCDuboisDMcDermottAChassanyODevelopment and validation of the Patient Assessment of Constipation Quality Of Life questionnaireScand J Gastroenterol20054054055116036506
- MuthénLKMuthénBOMplus User’s Guide6th edLos AngelesMuthén & Muthén19982010
- NunnallyJCBernsteinIHPsychometric Theory3rd edNew YorkMcGraw-Hill1994
- CohenJStatistical Power Analysis for the Behavioral Sciences2nd edHillsdale, NJLawrence Erlbaum Associates1988
- KaiserHThe application of electronic computers to factor analysisEduc Psychol Meas196020141151
- JöreskogKGSörbomDLISREL VI: Analysis of Linear Structural Relationships by Maximum Likelihood and Least Squares MethodsMooresville, INScientific Software, Inc1984
- BentlerPMEQS Structural Equations Program ManualLos Angeles, CABMDP Statistical Software1989
- TuckerLRLewisCA reliability coefficient for maximum likelihood factor analysisPsychometrika197338110
- HuLBentlerPMCutoff criteria for fit indexes in covariance structure analysis: conventional criteria versus new alternativesStruct Equ Modeling19996155
- GuyattGWalterSNormanGMeasuring change over time: assessing the usefulness of evaluative instrumentsJ Chronic Dis1987401711783818871
- ErvinCMFehnelSEBairdMJAssessment of treatment response in chronic constipation clinical trialsClin Exp Gastroenterol2014719119824940076
- DrossmanDACorazziariETalleyNJThompsonWGWhiteheadWERome II: The Functional Gastrointestinal Disorders2nd edMcLean, VADegnon Associates2000
- LongstrethGFThompsonWGCheyWDHoughtonLAMearinFSpillerRCFunctional bowel disordersGastroenterology20061301480149116678561
- JohansonJFKralsteinJChronic constipation: a survey of the patient perspectiveAliment Pharmacol Ther20072559960817305761