https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20254 Wed 11 Apr 2018 12:21:43 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29993 n = 46) had fewer than 10 clusters. Of the 42 articles discussing the design methodology 10 covered analysis and seven covered sample size. For cohort stepped wedge designs there was only one paper considering analysis and one considering sample size methods. Most trials employed either a GEE or mixed model approach to analysis (n = 77) but only 22 trials (22 %) estimated sample size in a way which accounted for the stepped wedge design that was subsequently used. Conclusions: Many studies which employ the stepped wedge design have few clusters but use methods of analysis which may require more clusters for unbiased and efficient intervention effect estimates. There is the need for research on the minimum number of clusters required for both types of stepped wedge design. Researchers should distinguish in the sample size calculation between cohort and cross sectional stepped wedge designs. Further research is needed on the effect of adjusting for the potential confounding of time on the study power.]]> Wed 11 Apr 2018 11:00:00 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:12641 Thu 01 Aug 2019 17:04:16 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8399 Sat 24 Mar 2018 08:40:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17875 Sat 24 Mar 2018 07:56:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:126 Sat 24 Mar 2018 07:43:10 AEDT ]]>