Glao beartaithe ar shonraí tairiscintí
Faisnéis
Uimhir thagartha na tairisceana
NP/2022/SMS/24217 ex-ante publicity
Teideal
Handling missing data in a study of Covid-19 vaccine effectiveness on risk reduction of severe outcomes
Tuairisc
Missing data pose a potential source of bias in statistical analyses of surveillance data and there is a growing need to support disease experts to address missing data issues. Therefore, understanding the different mechanisms behind the missing data and the ways to address them is crucial. The objectives of the present request are to use a case study on Covid-19 vaccine effectiveness on risk reduction of severe outcomes to provide: • An overview of the mechanism behind the missing data; • Recommendations for reporting missing data; • A review of the statistical methods for handling missing data. The above-mentioned study aimed at assessing the risk reduction in hospitalization and death among fully vaccinated individuals compared to unvaccinated individuals after adjusting by sex, age group, underlying medical conditions and reporting country. However, both the outcomes of interest (hospitalization and death), the vaccination status and or/dates of vaccination and the confounding variables used in the regression model had many missing values. For achieving the objectives, the contractor should develop a technical report containing an overview of what are the missing data and the mechanism behind them, a list of statistical methods for handling missing data according to different epidemiological analyses, an analysis plan for reporting and handling missing data applied to this study, statistical scripts (format R) covering the analysis performed to impute missing data, the outputs of statistical analysis performed. Moreover, one online training session is expected to be provided by the contractor. estimated total amount: 60,000 EUR
Cineál an Chonartha
Seirbhísí
Cineál an Nós Imeachta
Nós imeachta idirbheartaithe atá beartaithe do chonarthaí ar luach íseal/meánluach
Stádas
Dúnta
Foilsithe ar TED
Modh dámhachtana
Neamhbhainteach
Coinníollacha rannpháirtíochta
Rochtain ar sholáthar
Economic operators shall be established in the European Union, European Economic Area and Stabilisation and Association Agreements countries. See "Document Library" tab for further information.
Garspriocanna
Dáta Tosaithe
30/08/2022 00:00
Spriocdháta le haghaidh Ceisteanna
N/A
Spriocdháta le haghaidh Freagraí
N/A
An spriocdháta chun spéis a léiriú
13/09/2022 16:00
UTC+02:00
Seoladh táscach
20/09/2022
Bearta
Níl aon bheart sa Ghlao ar Thairiscintí.
Fógraí
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