Non-parametric data were compared using the Mann-Whitney U test for two independent samples or the Kruskal–Wallis test with a Müller-Dunn post-hoc test for three or more samples. Statistical significance was set at a p ≤ 0.05. Statistical analyses were performed using SPSS 21.0 IBM®.
Spss 21.0
SPSS 21.0 IBM® is a software package used for statistical analysis. It provides a comprehensive set of tools for data management, analysis, and presentation. The software is designed to handle a wide range of data types and offers a variety of statistical techniques, including regression, correlation, and nonparametric tests.
Lab products found in correlation
2 protocols using spss 21.0
Statistical Analysis of Research Data
Non-parametric data were compared using the Mann-Whitney U test for two independent samples or the Kruskal–Wallis test with a Müller-Dunn post-hoc test for three or more samples. Statistical significance was set at a p ≤ 0.05. Statistical analyses were performed using SPSS 21.0 IBM®.
Comprehensive Statistical Analysis Techniques
program (GraphPad Software, Inc. 2007). Continuous variables were tested for
normality with the Kolmogorov–Smirnov and Shapiro–Wilk tests. The values are
expressed as median and percentiles 25 and 75 for non-parametric data. The
categorical data are presented as absolute values and percentages and were
tested using Pearson χ2 test and Fisher exact test, if applicable.
Non-parametric data were compared using the Mann–Whitney U test with a
Bonferroni correction for two independent samples. The association between
continuous variables was performed by using Spearman Correlation and the good
performance or linearity was determined by “r” square value ≥ 0.8. Multiple
Linear Regression adjusted for clinical factors and expressed by “B” coefficient
and confidences intervals performed the predictive model for a continuous
variable. The value of p < .05 was considered statistically
significant and graphic correlations were performed by non-Linear
regression.
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