Qin S, Coles T, Nelson L, Williams V, Williams N, McLeod L. What impacts the stability of anchor-based responder definitions? Presented at the ISOQOL 24th Annual Conference; October 19, 2017. Philadelphia, PA.
Odom DM, McLeod LD, Sherif BN, Nelson LM. Methods to assess the association of patient-reported outcomes and clinical endpoints. Presented at the 2015 ISPOR 20th Annual International Meeting; May 2015. Philadelphia, PA.
Chen WH, Nelson L, McLeod LD, Edelen MO. Quantitative challenges facing patient-centered outcomes research. Presented at the 2014 ISPOR 19th Annual International Meeting; June 4, 2014.
Carson R, Baird M, Coon C, Fehnel SE, MacDougall J, Nelson LM. Psychometric evaluation of patient-reported outcome measures assessing IBS-C symptom severity and change: results from two randomized, double-blind, placebo-controlled phase 3 trials of linaclotide. Presented at the ISOQOL 19th Annual Conference; October 1, 2012.
Williams VSL, Nelson LM, Carson RT, Baird MJ, Coon CD, Fehnel SE, Johnston JM. Factor analyses of patient-reported outcome measures in Irritable Bowel Syndrome with Constipation (IBS-C): results from two randomized, double-blind, placebo-controlled phase 3 trials of linaclotide. Presented at the 2012 ACG Annual Meeting and Postgraduate Course; September 1, 2012. Previously presented at the Joint International Neurogastroenterology and Motility Meeting.
Nelson LM, Williams VS, Carson RT, Baird MJ, Coon CD, Fehnel SE. Factor analyses of chronic constipation patient-reported outcome measures: results from phase 2b and phase 3 trials of linaclotide. Presented at the Joint International Neurogastroenterology and Motility Meeting; September 1, 2012.
Nelson LM, Stull DE, Coon CD, Gnanasakthy A. Use of latent growth modeling to evaluate construct validity in longitudinal studies. Presented at the 2012 ISPOR 17th Annual International Meeting; June 2012. Washington, DC.
McLeod LD, Williams VS, Nelson LM, Coon CD. Psychometrics for the non-psychometrician – part I. Presented at the 18th Annual Conference of the International Society for Quality of Life Research; October 2011.
Coon CD, Nelson LM, Gilligan T. Advanced psychometric methods for PRO development – factor analysis. Presented at the 18th Annual Conference for the International Society for Quality of Life Research; October 2011.
Coon CD, Nelson LM, McLeod LD, Williams VS. Psychometrics for the non-psychometrician – part II. Presented at the 18th Annual Conference of the International Society for Quality of Life Research; October 2011.
Coon CD, Price MA, Nelson LM. Advanced patient-reported outcomes assessment: psychometric methods. Presented at the 2010 ISPOR 13th Annual European Congress; November 2010. Prague, Czech Republic.
Gilligan T, Coon C, Nelson L, McLeod L, Yang Y. Let SAS® do the work: correlation crossroads. Presented at the SAS Global Forum 2010; April 2010. Seattle, WA.
Nelson LM, McLeod LD, Lee J, Hill C, Sweeney CT, Sun P. Effects of insulin therapy on the Diabetes Symptom Checklist-Revised (DSC-R): data from a large insulin clinical trial. Presented at the 2009 16th Annual Conference of the International Society for Quality of Life Research; October 2009. New Orleans, LA.
Peisner-Feinberg ES, Nelson LM, Schaaf JM. Longitudinal cognitive and social development of at-risk participants in a statewide school readiness program. Presented at the Society for Research in Child Development 2007 Biennial Meeting; March 2007.
Thissen D, Rosa K, McLeod LD, Nelson LM. A brief introduction to item response theory for items scored in more than two categories. Presented at the Achievement Levels Workshop National Assessment; 1997. Boulder, CO.
Rosa K, Nelson LM, Swygert K, Thissen D. Linear approximations for scaled scores developed with item response theory for combinations of multiple-choice and open-ended items. Presented at the Annual Meeting of the Psychometric Society; June 1996. Banff, Canada.