Email Jeremy Clark at: jeremyclarkbio@gmail.com Prices here.
Radomska K, Mielnik M, Gostyński M, Dzięciołowska-Baran E. Objective evaluation, using computed tomography, of round window access for cochlear implantation. Eur Arch Otorhinolaryngol. 2024 Aug 4. PMID: 39098956.
Fig. 5 Relationships between the clinical evaluation of round
window access and cochlear implant electrode access used.
Acknowledgements. We would like to thank Jeremy Clark, who performed the statistical analyses of the results presented in the paper. One version of this article has been checked by an English Academic Editor [that’s me !!].
“Statistical analyses. All statistical analyses used the R statistical platform … False Discovery Rate (FDR) … corrections can deal with arbitrary independence (or auto-correlation) between tests …. Correlations between the ordinal scales and continuous or ordinal variables were performed using Kendall’s tau correlation coefficients; these non-parametric tests are rank-based and can be used for ordinal data such as the grading scale used in this article. Count plots were created using the R package [ggplot2] function geom_count and scale_size_area. Associations between the ordinal scales and categorical variables were assessed using Kruskal-Wallis tests and post-hoc Mann-Whitney U tests.”
Amernik K, Mielnik M, Gawlikowska-Sroka A, Dzięciołowska-Baran EA. Selected structures of middle ear relevant to cochlear implantation on the basis of computer tomography. Folia Morphol (Warsz). 2023 Dec 28. doi: 10.5603/fm.97820. Epub ahead of print. PMID: 38152919.
Recent studies concluded include the following. ONLY THE MOST IMPORTANT STATISTICS USED ARE SHOWN HERE. USUALLY THERE WERE HUNDREDS OF PARAMETERS TO BE ASSESSED (!)
V. Bacterial infections following surgery. Multiple logistic regression.
U. Facial surgery. Numerous ordinal parameters were assessed and graphs produced.
T. Turner’s syndrome. Bone mineralization and muscle strength. Used multiple linear regression and backward step-wise multivariate logistic regression – the latter revealed a tipping point problem and it was necessary to compute and alternative parameter. This will probably contribute to 2 papers.
R. My own project: Clark JSC, van de Wetering T, Marciniak B et al. Association studies between chromosomal regions 1q21.3, 5q21.3, 14q21.2 and 17q21.31 and numbers of children in Poland. Scientific Reports. 2022;12:18923. Use of zero-inflated negative binomial regression.
S. Surgical data correlating scan measurements with ability to access tympanic membrane. Use of Kendall rank correlations and ordinal logistic regression.
Q. Surgical measurements as predictors of type of operation. Rank correlations and ordinal regression, as well as univariate logistic regression.
P. Bacterial infections of newborns. Kruskal-Wallis, Fisher’s tests and univariate and step-wise multiple logistic regression.
O. infections in adults and children. Principal Component Analyses (PCA) and Factor Analyses of Mixed Data (FAMD), as well as Pearson and Kendall correlations.
N. Ear surgery. Principal Component Analyses (PCA) and Factor Analyses of Mixed Data (FAMD), as well as Pearson and Kendall correlations.
M. My own project: Clark JSC, Kulig P, Podsiadło K et al. Empirical investigations into Kruskal-Wallis power studies utilizing Bernstein fits, simulations and medical study datasets. Scientific Reports. 2023;13:2352. Use of a Monte Carlo power study.
L. Surgery on varicose veins. Step-wise mulivariate logistic regression.
K. Ozone or CO2 therapy and ankle-brachial blood pressure index. Aligned rank transform for repeated measures and marginal homogeneity tests.
J. Enzyme levels in urine with cardiological pathology. Aligned rank transform for repeated measures and marginal homogeneity tests.
I. Phenotype data analysed before and after operation. Aligned rank transform for repeated measures and marginal homogeneity tests.
H. My own project: Clark JSC, Salacka A, et al. Repetition and reproduction of preclinical medical studies: taking a leaf from the plant sciences with consideration of generalised systematic errors. arXiv:2201.10960; 2022. Studies on systematic error.
G. Immunosuppressants and cancer therapy. Kruskal-Wallis, Fisher and ANOVA plus post-hoc tests.
F. Cardiovascular disease and deaths from myocardial infarction. Aligned rank transform for repeated measures and marginal homogeneity tests.
E. Visceral fat, cardiometabolic risk factors and nocturnal blood pressure in young adults with primary hypertension. Pearson and Kendall correlations. Bland-Altman analysis.
D. My own project: Clark JSC, Podsiadło K, Sobalska-Kwapis M et al. Premature termination codon rs67047829 in ERV3-1 may be protective against obesity. DOI: 10.21203/rs.3.rs-1509014/v1. 2022 5. Clark JSC, Simple associations.
C. Rabbit viruses. ANOVA or Kruskal-Wallis with Tukey’s HSD and Dunn post-hoc tests – and aligned rank transform.
B. Exercise and orthopaedic surgery. ANOVA or Kruskal-Wallis with Tukey’s HSD and Dunn post-hoc tests. Cochran-Mantel-Haenszel tests.
A. My own project: Rydzewska K, Podsiadło K, Wetering TVD, Ciechanowicz A. Dramatic differences in male and female mortality trends for selected European cohorts over ∼20 years. bioRxiv doi.org/10.1101/2020.05.23.111971. 2021. Modal studies.
I can process many types of statistics – including the following:
Chi-squared, Fisher’s and other exact tests of independence or goodness-of-fit; Cochran–Mantel– Haenszel test; Descriptive statistics: central tendency, dispersion, standard error, confidence limits, normality, homoscedasticity, data transformations, multiple comparisons; one-way to three-way or nested anova; Kruskal–Wallis test; Wilcoxon signed-rank test; t–tests; simple and step-wise multiple linear regression; Pearson and Kendall correlations; analysis of covariance; simple, step-wise multiple, ordinal and conditional logistic regression; principal component analyses or factor analyses of mixed data; aligned rank transform for repeated measures. Survival studies.
dr hab. n. med. Jeremy Clark B.A.(Hons) CANTAB, Ph.D.,
C.M.B. 