| Author : | Tang, Nian-Sheng; Tang, Man-Lai |
|---|---|
| Category : | Journal Article |
| Department : | |
| Year / Month : | 2003 |
| ISSN: | 0323-3847 |
| Source : | Biometrical Journal, 45, 34 – 46. |
Abstract
- In some infectious disease studies and 2-step treatment studies, 2 × 2 table with structural zero could arise in situations where it is theoretically impossible for a particular cell to contain observations or structural void is introduced by design. In this article, we propose a score test of hypotheses pertaining to the marginal and conditional probabilities in a 2 × 2 table with structural zero via the risk/rate difference measure. Score test-based confidence interval will also be outlined. We evaluate the performance of the score test and the existing likelihood ratio test. Our empirical results evince the similar and satisfactory performance of the two tests (with appropriate adjustments) in terms of coverage probability and expected interval width. Both tests consistently perform well from small- to moderate-sample designs. The score test however has the advantage that it is only undefined in one scenario while the likelihood ratio test can be undefined in many scenarios. We illustrate our method by a real example from a two-step tuberculosis skin test study.
Related Publication
- Freezing the Master Production Schedule for Material Requirements Planning Systems under Demand Uncertainty
- The Effects of Forecasting Errors on the Total Cost of Operations
- Quality Managment Initatives in Banking Industry: A Meta Analysis of Hong Kong and United Kingdom
- A Longitudinal Study of Software Process Management in Taiwan's Top Companies
- A taxonomy of manufacturing strategies in China