The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2407/10/558/prepub We thank Benny C. Y. Zee, Ph.D. Director of center for clinical trial and comprehensive cancer trials unit, Professor of school of Public Health and Department of statistics, The Chinese University of Hong Kong, for his assistance in English editing and statistical recommendations.
These procedures follow the statistical recommendations of Aiken and West (1991).
Four textbooks appeared to be relatively comprehensive in their treatment of statistical recommendations [ 93- 95, 114]. 1.
General statistical recommendations concerning factor analysis often suggest that item groupings with a Cronbach's alpha under 0.60 should not constitute a factor [ 32].
In the present study, we used FPC scores as continuous variables, as per general statistical recommendations, as this is the first choice of analysis in order to retain information and statistical power [ 33].
Hence, our first encouragement will be to get back to these data sets and test for evolutionary changes, following the latest statistical recommendations (Postma 2006; Hadfield et al. 2010).
Assuming that guidelines play an equally important role in improvement of the reliability and the value of registry research, the Nordic Arthroplasty Register Association NARAA) study group decided at a meeting in Lund, Sweden, in September, 2009, to develop statistical recommendations for analysis of arthroplasty data.
We thematically grouped the retrieved resources, suggestions or techniques (e.g., statistical versus qualitative recommendations), described the recommendations, highlighted any empirical support cited for each recommendation, and made an overall summary of the recommendations.
Following the statistical model's recommendation for treatment, only 26.5% of the cohort would have received treatment and 2.4% patients would have been harmed, whereas indiscriminate administration would have harmed 14.8% of patients.
The method believes that dishonest recommendations have different statistical patterns from honest recommendations.
