It demonstrates that with a sample size of 500 per group, there will be a likelihood of detecting a RRR of 30% or greater across the plausible range of revision surgery rates, and moderate power for slightly lower effect sizes.
It demonstrates that with the chosen sample size of 750 per group, there will be a high likelihood of detecting a RRR of 25% or greater across the plausible range of revision surgery rates, and moderate power for slightly lower effect sizes.
Taxonomy provides many examples; current use of a particular taxonomic term (e.g., a species name) cannot reasonably envision the range of taxonomic revisions that might occur in the future.
A strength of this study is that we had a decent number of patients in both subgroups of redo and first revision with similar group size (n = 120 versus 155), and there was a range in number of revisions from 2 to 6 in the redo revision subgroup to provide reference data for comparison with future studies.
The principal outcomes were (1) the rates of new and recurrent infections and (2) the clinical outcome measured as postoperative clinical knee score and range of motion following the revision arthroplasty.
This subgroup constituted only less than a quarter of the full sample and the range in number of revision is not provided to allow further comparison between studies.
Correction: June 19 , 2002 Wednesday An article yesterday about negotiations over the New Jersey state budget misstated the projected range of revenue from proposed revisions to the corporate income tax.
We support the use of large femoral heads to treat instability in a wide variety of patients because of the increased stability, decreased wear of modern metal-on-metal designs, increased range of motion, and variety of revision options.
Several articles have identified risk factors for revision of primary THA based on data from registries or individual centers, and these findings represent a potential wealth of evidence on the effects of a range of risk factors on revision of primary THA.
The medical records were searched for subsequent diagnoses of rheumatic and/or immunological diseases, both manually and by computerized cross-referencing the patient identifiers with a broad range of International Classification of Diseases, Ninth Revision and Tenth Revision codes from hospital registries using codes similar to those used by Howitz et al [ 13].
