D J Pasta
Affiliation: Lewin Group
- Probabilistic sensitivity analysis incorporating the bootstrap: an example comparing treatments for the eradication of Helicobacter pyloriD J Pasta
Data Management and Analysis, Lewin TAG, Inc, San Francisco, California 94107, USA
Med Decis Making 19:353-63. 1999..The probabilistic sensitivity analysis provided insights into the decision-analytic model beyond the traditional base-case and deterministic sensitivity analyses and should become the standard method for assessing sensitivity...
- A comparison of two approaches for assessing patient importance weights to conduct an Extended Q-TWiST analysisC E Schwartz
Behavioral Science Research Program, Frontier Science and Technology Research Foundation, Inc, Chestnut Hill, MA, USA
Qual Life Res 8:197-207. 1999..The second method, a Likert-scaled approach, asks patients to evaluate the importance of each quality-of-life (QOL) domain...
- Approaches to missing data inference results from CaPSURE: an observational study of patients with prostate cancerD P Lubeck
Lewin TAG, Inc, San Francisco, California, USA
Pharmacoeconomics 15:197-204. 1999..There are multiple reasons for missing data in observational studies; excluding patients with missing data can lead to significant bias. In this study, we evaluated several methods for assigning missing values to health service utilisation...
- Health-Related quality-of-life and quality-days incrementally gained in symptomatic nonerosive GERD patients treated with lansoprazole or ranitidineS D Mathias
The Lewin Group, San Francisco, California 94107, USA
Dig Dis Sci 46:2416-23. 2001..Patients taking lansoprazole 15 or 30 mg daily reported better outcomes than those receiving ranitidine 150 twice a day over the eight-week study...