Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries
Introduction Vaccination has significantly reduced morbidity and mortality resulting from rotavirus infection worldwide. However, rotavirus vaccine efficacy (VE) appears to wane over the first 2 years since vaccination, particularly in developing countries. Statistical methods for detecting VE wanin...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-11-01
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| Series: | Human Vaccines & Immunotherapeutics |
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| Online Access: | http://dx.doi.org/10.1080/21645515.2021.1968738 |
| _version_ | 1797673295155298304 |
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| author | Michael Haber Jacqueline E. Tate Benjamin A. Lopman Wenrui Qi Kylie E. C. Ainslie Umesh D. Parashar |
| author_facet | Michael Haber Jacqueline E. Tate Benjamin A. Lopman Wenrui Qi Kylie E. C. Ainslie Umesh D. Parashar |
| author_sort | Michael Haber |
| collection | DOAJ |
| description | Introduction Vaccination has significantly reduced morbidity and mortality resulting from rotavirus infection worldwide. However, rotavirus vaccine efficacy (VE) appears to wane over the first 2 years since vaccination, particularly in developing countries. Statistical methods for detecting VE waning and estimating its rate have been used in a few studies, but comparisons of methods for evaluating VE waning have not yet been performed. In this work we present and compare three methods – Durham’s method, Tian’s method, and time-dependent covariate (TDC) method – based on generalizations of the Cox proportional hazard model. Methods We developed a new stochastic agent-based simulation model to generate data from a hypothetical rotavirus vaccine trial where the protective efficacy of the vaccine may vary over time. Input parameters to the simulation model were obtained from studies on rotavirus infections in four developing countries. We applied each of the methods to four simulated datasets and compared the type-1 error probabilities and the powers of the resulting statistical tests. We also compared estimated and true values of VE over time. Results Durham’s method had the highest power of detecting true VE waning of the three methods. This method also provided quite accurate estimates of VE in each period and of the per-period drop in VE. Conclusions Durham’s method is somewhat more powerful than the other two Cox proportional hazards model-based methods for detecting VE waning and provides more information about the temporal behavior of VE. |
| first_indexed | 2024-03-11T21:42:27Z |
| format | Article |
| id | doaj.art-2e66c31af5444a46a15d0611161cad0e |
| institution | Directory Open Access Journal |
| issn | 2164-5515 2164-554X |
| language | English |
| last_indexed | 2024-03-11T21:42:27Z |
| publishDate | 2021-11-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Human Vaccines & Immunotherapeutics |
| spelling | doaj.art-2e66c31af5444a46a15d0611161cad0e2023-09-26T12:43:41ZengTaylor & Francis GroupHuman Vaccines & Immunotherapeutics2164-55152164-554X2021-11-0117114632463510.1080/21645515.2021.19687381968738Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countriesMichael Haber0Jacqueline E. Tate1Benjamin A. Lopman2Wenrui Qi3Kylie E. C. Ainslie4Umesh D. Parashar5Emory UniversityCenters for Disease Control and PreventionCenters for Disease Control and PreventionEmory UniversitySchool of Public Health, Imperial CollegeCenters for Disease Control and PreventionIntroduction Vaccination has significantly reduced morbidity and mortality resulting from rotavirus infection worldwide. However, rotavirus vaccine efficacy (VE) appears to wane over the first 2 years since vaccination, particularly in developing countries. Statistical methods for detecting VE waning and estimating its rate have been used in a few studies, but comparisons of methods for evaluating VE waning have not yet been performed. In this work we present and compare three methods – Durham’s method, Tian’s method, and time-dependent covariate (TDC) method – based on generalizations of the Cox proportional hazard model. Methods We developed a new stochastic agent-based simulation model to generate data from a hypothetical rotavirus vaccine trial where the protective efficacy of the vaccine may vary over time. Input parameters to the simulation model were obtained from studies on rotavirus infections in four developing countries. We applied each of the methods to four simulated datasets and compared the type-1 error probabilities and the powers of the resulting statistical tests. We also compared estimated and true values of VE over time. Results Durham’s method had the highest power of detecting true VE waning of the three methods. This method also provided quite accurate estimates of VE in each period and of the per-period drop in VE. Conclusions Durham’s method is somewhat more powerful than the other two Cox proportional hazards model-based methods for detecting VE waning and provides more information about the temporal behavior of VE.http://dx.doi.org/10.1080/21645515.2021.1968738waning vaccine efficacyrotavirus vaccinehazard of infectioncox regression modelagent-based simulations |
| spellingShingle | Michael Haber Jacqueline E. Tate Benjamin A. Lopman Wenrui Qi Kylie E. C. Ainslie Umesh D. Parashar Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries Human Vaccines & Immunotherapeutics waning vaccine efficacy rotavirus vaccine hazard of infection cox regression model agent-based simulations |
| title | Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| title_full | Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| title_fullStr | Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| title_full_unstemmed | Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| title_short | Comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| title_sort | comparing statistical methods for detecting and estimating waning efficacy of rotavirus vaccines in developing countries |
| topic | waning vaccine efficacy rotavirus vaccine hazard of infection cox regression model agent-based simulations |
| url | http://dx.doi.org/10.1080/21645515.2021.1968738 |
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