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  1. Article ; Online: Minimally invasive versus conventional sternotomy for aortic valve replacement: A systematic review and meta-analysis.

    Mohamed, Abdalla / Negida, Ahmed / Shaboub, Ahmed

    Clinical medicine (London, England)

    2024  Volume 23, Issue Suppl 6, Page(s) 58–59

    MeSH term(s) Humans ; Aortic Valve/surgery ; Sternotomy
    Language English
    Publishing date 2024-01-02
    Publishing country England
    Document type Meta-Analysis ; Systematic Review ; Journal Article
    ZDB-ID 2048646-7
    ISSN 1473-4893 ; 1470-2118
    ISSN (online) 1473-4893
    ISSN 1470-2118
    DOI 10.7861/clinmed.23-6-s58
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5439: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Sample Size Calculation Guide - Part 7: How to Calculate the Sample Size Based on a Correlation.

    Negida, Ahmed

    Advanced journal of emergency medicine

    2020  Volume 4, Issue 2, Page(s) e34

    Language English
    Publishing date 2020-02-17
    Publishing country Iran
    Document type Journal Article
    ISSN 2588-400X
    ISSN (online) 2588-400X
    DOI 10.22114/ajem.v0i0.344
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Estimation of COVID-19 burden in Egypt.

    Negida, Ahmed

    The Lancet. Infectious diseases

    2020  Volume 20, Issue 8, Page(s) 894–895

    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus Infections ; Egypt ; Humans ; Influenza A Virus, H1N1 Subtype ; Influenza, Human ; Pandemics ; Pneumonia, Viral ; SARS-CoV-2
    Keywords covid19
    Language English
    Publishing date 2020-04-27
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 2061641-7
    ISSN 1474-4457 ; 1473-3099
    ISSN (online) 1474-4457
    ISSN 1473-3099
    DOI 10.1016/S1473-3099(20)30329-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5743: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Sample Size Calculation Guide - Part 6: How to calculate the sample size for a non-inferiority or an equivalence clinical trial.

    Negida, Ahmed

    Advanced journal of emergency medicine

    2019  Volume 4, Issue 1, Page(s) e15

    Language English
    Publishing date 2019-11-27
    Publishing country Iran
    Document type Journal Article
    ISSN 2588-400X
    ISSN (online) 2588-400X
    DOI 10.22114/ajem.v0i0.302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

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  5. Article ; Online: Sample Size Calculation Guide - Part 7

    Ahmed Negida

    Advanced Journal of Emergency Medicine (2020)

    How to Calculate the Sample Size Based on a Correlation

    2020  

    Abstract: In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion, for an independent cohort study, for an independent case-control study, for a diagnostic test accuracy study, for a superiority ... ...

    Abstract In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion, for an independent cohort study, for an independent case-control study, for a diagnostic test accuracy study, for a superiority clinical trial, and for a non-inferiority or equivalence clinical trial. In this article, we will explain how to calculate the sample size for a clinical study with the aim of detecting the correlation coefficient between two variables.
    Keywords Medicine ; R
    Language English
    Publishing date 2020-02-01T00:00:00Z
    Publisher Tehran University of Medical Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  6. Article: The Global NeuroSurg Research Collaborative: A Novel Student-Based Model to Expand Global Neurosurgery Research.

    Negida, Ahmed / Raslan, Ahmed M

    Frontiers in surgery

    2021  Volume 8, Page(s) 721863

    Language English
    Publishing date 2021-10-27
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2773823-1
    ISSN 2296-875X
    ISSN 2296-875X
    DOI 10.3389/fsurg.2021.721863
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Estimation of COVID-19 burden in Egypt

    Negida, Ahmed

    The Lancet Infectious Diseases

    2020  Volume 20, Issue 8, Page(s) 894–895

    Keywords Infectious Diseases ; covid19
    Language English
    Publisher Elsevier BV
    Publishing country us
    Document type Article ; Online
    ZDB-ID 2061641-7
    ISSN 1474-4457 ; 1473-3099
    ISSN (online) 1474-4457
    ISSN 1473-3099
    DOI 10.1016/s1473-3099(20)30329-7
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 5743: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article ; Online: Sample Size Calculation Guide - Part 6

    Ahmed Negida

    Advanced Journal of Emergency Medicine (2019)

    How to calculate the sample size for a non-inferiority or an equivalence clinical trial

    2019  

    Abstract: In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion, for an independent cohort study, for an independent case-control study, for a diagnostic test accuracy study, and for a superiority ... ...

    Abstract In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion, for an independent cohort study, for an independent case-control study, for a diagnostic test accuracy study, and for a superiority clinical trial. In this article, we will explain how to calculate the sample size for a non-inferiority or equivalence clinical trial.
    Keywords Medicine ; R
    Language English
    Publishing date 2019-11-01T00:00:00Z
    Publisher Tehran University of Medical Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Article ; Online: Comment on Abbas et al. The Safety and Efficacy of Nusinersen in the Treatment of Spinal Muscular Atrophy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

    Aljabali, Ahmed / Abdo, Maha / Negida, Ahmed

    Medicina (Kaunas, Lithuania)

    2022  Volume 58, Issue 6

    Abstract: We read with interest the article by Abbas et al. [ ... ]. ...

    Abstract We read with interest the article by Abbas et al. [...].
    MeSH term(s) Humans ; Muscular Atrophy, Spinal/drug therapy ; Oligonucleotides/adverse effects ; Randomized Controlled Trials as Topic
    Chemical Substances Oligonucleotides ; nusinersen (5Z9SP3X666)
    Language English
    Publishing date 2022-06-06
    Publishing country Switzerland
    Document type Journal Article ; Meta-Analysis ; Systematic Review
    ZDB-ID 2188113-3
    ISSN 1648-9144 ; 1010-660X
    ISSN (online) 1648-9144
    ISSN 1010-660X
    DOI 10.3390/medicina58060766
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6270: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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