Table 1.
Influential reports for Group-Randomized Trial methods sorted by Relative Citation Ratio (RCR) and citation count with explanation for selecting items; RCR and count data were retrieved April 27, 2021.
| Citation | RCR | Count | Explanation |
|---|---|---|---|
| Campbell MK, Piaggio G, Elbourne DR, et al. CONSORT 2010 statement: extension to cluster randomised trials. BMJ 2012; 345: e5661. 2012/09/07. DOI: 10.1136/bmj.e5661. | 47.84 | 849 | High RCR and citation count |
| Campbell MK, Elbourne DR, Altman DG, et al. CONSORT statement: extension to cluster randomised trials. BMJ 2004; 328: 702–708. 2004/03/20. DOI: 10.1136/bmj.328.7441.702. | 37.90 | 1042 | High RCR and citation count |
| Donner A, Birkett N and Buck C. Randomization by cluster. Sample size requirements and analysis. Am J Epidemiol 1981; 114: 906–914. 1981/12/01. DOI: 10.1093/oxfordjournals.aje.a113261. | 23.15 | 411 | High RCR and citation count |
| Bland JM and Kerry SM. Statistics notes. Trials randomised in clusters. BMJ 1997; 315: 600. 1997/09/26. DOI: 10.1136/bmj.315.7108.600. | 20.98 | 397 | High RCR and citation count |
| Gulliford MC, Ukoumunne OC and Chinn S. Components of variance and intraclass correlations for the design of community-based surveys and intervention studies: data from the Health Survey for England 1994. Am J Epidemiol 1999; 149: 876–883. 1999/04/30. DOI: 10.1093/oxfordjournals.aje.a009904. | 19.89 | 427 | High RCR and citation count |
| Hayes RJ and Bennett S. Simple sample size calculation for cluster-randomized trials. Int J Epidemiol 1999; 28: 319–326. 1999/05/26. DOI: 10.1093/ije/28.2.319. | 18.16 | 512 | High RCR and citation count |
| Rao JN and Scott AJ. A simple method for the analysis of clustered binary data. Biometrics 1992; 48: 577–585. 1992/06/01. | 15.64 | 316 | High RCR and citation count |
| Grant A, Treweek S, Dreischulte T, et al. Process evaluations for cluster-randomised trials of complex interventions: a proposed framework for design and reporting. Trials 2013; 14: 15. 2013/01/15. DOI: 10.1186/1745-6215-14-15. | 14.51 | 219 | High RCR and citation count |
| Donner A and Klar N. Issues in the meta-analysis of cluster randomized trials. Stat Med 2002; 21: 2971–2980. 2002/09/27. DOI: 10.1002/sim.1301. | 14.22 | 352 | High RCR and citation count |
| Zou GY and Donner A. Extension of the modified Poisson regression model to prospective studies with correlated binary data. Stat Methods Med Res 2013; 22: 661–670. 2011/11/11. DOI: 10.1177/0962280211427759. | 13.73 | 253 | High RCR and citation count |
| Krull JL and MacKinnon DP. Multilevel Modeling of Individual and Group Level Mediated Effects. Multivariate Behav Res 2001; 36: 249–277. 2001/04/01. DOI: 10.1207/S15327906MBR3602_06. | 13.49 | 359 | High RCR and citation count |
| Hedeker D and Gibbons RD. A random-effects ordinal regression model for multilevel analysis. Biometrics 1994; 50: 933–944. 1994/12/01. | 12.99 | 221 | High RCR and citation count |
| Murray DM, Varnell SP and Blitstein JL. Design and analysis of group-randomized trials: a review of recent methodological developments. Am J Public Health 2004; 94: 423–432. 2004/03/05. DOI: 10.2105/ajph.94.3.423. | 12.45 | 341 | High RCR and citation count |
| Eccles M, Grimshaw J, Campbell M, et al. Research designs for studies evaluating the effectiveness of change and improvement strategies. Quality & safety in health care 2003; 12: 47–52. 2003/02/07. DOI: 10.1136/qhc.12.1.47. | 11.40 | 321 | High RCR and citation count |
| Murray DM and Hannan PJ. Planning for the appropriate analysis in school-based drug-use prevention studies. J Consult Clin Psychol 1990; 58: 458–468. 1990/08/01. | 11.33 | 133 | High RCR |
| Adams G, Gulliford MC, Ukoumunne OC, et al. Patterns of intra-cluster correlation from primary care research to inform study design and analysis. J Clin Epidemiol 2004; 57: 785–794. 2004/10/16. DOI: 10.1016/j.jclinepi.2003.12.013. | 11.05 | 303 | High RCR and citation count |
| Eldridge SM, Ashby D and Kerry S. Sample size for cluster randomized trials: effect of coefficient of variation of cluster size and analysis method. Int J Epidemiol 2006; 35: 1292–1300. 2006/09/01. DOI: 10.1093/ije/dyl129. | 9.56 | 260 | High RCR and citation count |
| Hedeker D and Gibbons RD. MIXOR: a computer program for mixed-effects ordinal regression analysis. Comput Methods Programs Biomed 1996; 49: 157–176. 1996/03/01. | 9.33 | 180 | High RCR |
| Feldman HA. Families of lines: random effects in linear regression analysis. J Appl Physiol 1988; 64: 1721–1732. 1988/04/01. DOI: 10.1152/jappl.1988.64.4.1721. | 9.09 | 138 | High RCR |
| Handley MA, Lyles CR, McCulloch C, et al. Selecting and Improving Quasi-Experimental Designs in Effectiveness and Implementation Research. Annu Rev Public Health 2018; 39: 5–25. 2018/01/13. DOI: 10.1146/annurev-publhealth-040617-014128. | 9.01 | 49 | High RCR |
| Emsley R, Dunn G and White IR. Mediation and moderation of treatment effects in randomised controlled trials of complex interventions. Stat Methods Med Res 2010; 19: 237–270. 2009/07/18. DOI: 10.1177/0962280209105014. | 8.46 | 190 | High RCR |
| Rutterford C, Copas A and Eldridge S. Methods for sample size determination in cluster randomized trials. Int J Epidemiol 2015; 44: 1051–1067. 2015/07/16. DOI: 10.1093/ije/dyv113. | 8.41 | 105 | High RCR |
| Austin PC. A Tutorial on Multilevel Survival Analysis: Methods, Models and Applications. Int Stat Rev 2017; 85: 185–203. 2018/01/09. DOI: 10.1111/insr.12214. | 8.11 | 82 | High RCR |
| Donner A and Klar N. Design and Analysis of Cluster Randomization Trials in Health Research. London: Arnold, 2000, p. 178. | 2120 | High Citation Count | |
| Murray DM. Design and Analysis of Group-Randomized Trials. New York, NY: Oxford University Press, 1998, p.467. | 1832 | High Citation Count | |
| Hayes RJ and Moulton LH. Cluster Randomised Trials. Boca Raton, FL: CRC Press, 2009. | 1033 | High Citation Count | |
| Hayes RJ and Moulton LH. Cluster Randomised Trials. 2nd ed. Boca Raton, FL: CRC Press, 2017. | 1033 | High Citation Count | |
| Hedges LV and Hedberg EC. Intraclass correlation values for planning group-randomized trials in education. Educ Eval Policy An 2007; 29: 60–87. DOI: 10.3102/0162373707299706. | 414 | High Citation Count | |
| Raudenbush SW. Statistical analysis and optimal design for cluster randomized trials. Psychological Methods 1997; 2: 173–185. DOI: 10.1037/1082–989x.2.2.173. | 383 | High Citation Count | |
| Eldridge S and Kerry S. A Practical Guide to Cluster Randomised Trials in Health Services Research. London: Arnold, 2012. | 295 | High Citation Count | |
| Cornfield J. 1978. Randomization by group: a formal analysis. Am J Epidemiol 108: 100–2 | 289 | High citation count | |
| Hedges LV. Effect sizes in cluster-randomized designs. J Educ Behav Stat 2007; 32: 341–370. DOI: 10.3102/1076998606298043. | 230 | High Citation Count |
Reports in bold type were not included as influential reports in the earlier paper (1).