Szczegóły planowanego ogłoszenia o przetargu
Informacja
Numer referencyjny przetargu
NP/2022/SMS/24217 ex-ante publicity
Tytuł
Handling missing data in a study of Covid-19 vaccine effectiveness on risk reduction of severe outcomes
Opis
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
Rodzaj zamówienia
Usługi
Rodzaj procedury
Planowana procedura negocjacyjna dla zamówień o średniej/niskiej wartości
Status
Zamknięte
Opublikowane w serwisie TED
Sposób udzielenia zamówienia
Nie dotyczy
Warunki udziału
Dostęp do zamówień
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.
Najistotniejsze elementy
Data początkowa
30/08/2022 00:00
Termin końcowy zadawania pytań
N/A
Termin końcowy udzielenia odpowiedzi
N/A
Termin zgłoszenia zainteresowania
13/09/2022 16:00
UTC+02:00
Orientacyjna data ogłoszenia
20/09/2022
Części
Ogłoszenie o przetargu nie jest podzielone na części.
Ogłoszenia
Nothing found to display.