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  • 1
    In: Research Methods in Medicine & Health Sciences, SAGE Publications, Vol. 4, No. 1 ( 2023-01), p. 2-15
    Abstract: To test the feasibility of undertaking a simultaneous Study Within A Trial (SWAT) to train staff who recruit participants into surgical randomised controlled trials (RCTs), by assessing key uncertainties around recruitment, randomisation, intervention delivery and data collection. Study design and setting Twelve surgical RCTs were eligible. Interested sites (clusters) were randomised 1:1, with recruiting staff (surgeons and nurses) offered training or no training. The primary outcome was the feasibility of recruiting sites across multiple surgical trials simultaneously. Secondary outcomes included numbers/types of staff enrolled, attendance at training, training acceptability, confidence in recruiting and participant recruitment rates six months later. Results Four RCTs (33%) comprising 91 sites participated. Of these, 29 sites agreed to participate (32%) and were randomised to intervention (15 sites, 29 staff) or control (14 sites, 29 staff). Research nurses attended and found the training to be acceptable; no surgeons attended. In the intervention group, there was evidence of increased confidence when pre- and post- training scores were compared (mean difference in change 1.42; 95% CI 0.56, 2.27; p = 0.002). There was no effect on recruitment rate. Conclusion It was feasible to randomise sites across four surgical RCTs in a simultaneous SWAT design. However, as small numbers of trials and sites participated, and no surgeons attended training, strategies to improve these aspects are needed for future evaluations.
    Type of Medium: Online Resource
    ISSN: 2632-0843 , 2632-0843
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 3053282-6
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Research Methods in Medicine & Health Sciences Vol. 1, No. 1 ( 2020-09), p. 2-6
    In: Research Methods in Medicine & Health Sciences, SAGE Publications, Vol. 1, No. 1 ( 2020-09), p. 2-6
    Abstract: To describe the roles that pairwise randomisation has to prevent selection bias and allow a common outcome measurement point when timing of treatment is uncertain. Study design and setting: A theoretical paper discussing situations where pairwise randomisation might be an appropriate method of allocation. Results When recruitment of participants allows two or more randomisations to occur simultaneously, then pairwise randomisation allows site stratification but prevents site predictability. For evaluations of treatments where timing of treatment is uncertain (e.g. elective surgery), pairwise randomisation allows a common post-treatment evaluation time point. In waiting list designs where length of treatment varies by patient, pairwise randomisation allows differential follow-up across pairs. Conclusion Since pairwise randomisation was described in 2004, to allow unpredictable site stratification, it has been rarely used. However, it can address other methodological issues and should be considered more widely.
    Type of Medium: Online Resource
    ISSN: 2632-0843 , 2632-0843
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 3053282-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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