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Spss statistics for macos

Manufactured by IBM
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SPSS Statistics for MacOS is a statistical software package developed by IBM. It provides data management, analysis, and visualization capabilities for users on the MacOS operating system.

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42 protocols using spss statistics for macos

1

Statistical Analysis Procedures for Parametric and Non-Parametric Data

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Normal distribution was tested using the Shapiro-Wilk test. Differences in continuous, parametric data were compared using the t-test. Continuous, independent, non-parametric data were compared using the Mann-Whitney U test. Differences in categorical data were identified using Pearson's chi-squared test. Variances among and between the subgroups concerning continuous data were compared using ANOVA for parametric data. After assessing the equality of variances using Leven's test, post hoc testing was performed by Bonferroni adjustment for multiple comparisons. On the other hand, differences between the subgroups for categorial, non-parametric variables were assessed using the Kruskal-Wallis test and Dunn-Bonferroni corrected post hoc analysis. The area under the receiver operating characteristic curve (AUC) was calculated for subclassification. Based on AUC analysis parameters, sensitivity and specificity for subclassification were calculated using Youden's index.
A p-value of <0.05 was considered statistically significant. Statistical analysis was performed using SPSS software (IBM SPSS Statistics for macOS, Version 27.0, Armonk, NY, USA).
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2

Statistical Analysis of CT Scans

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Statistical analyses were performed using SPSS statistics (IBM Corp. Released 2017. IBM SPSS statistics for MacOS, Version 25.0, Armonk, NY, USA). The distribution of continuous variables was assessed statistically utilizing the Shapiro-Wilk test, and assessed visually by inspection of normal probability plots and histograms. Continuous variables were denoted as mean and standard deviation (SD) or median and interquartile range (IQR) in the presence of skewness. CT scans were assessed in a pairwise manner. The mean of all observers was used to compare AWESD and NON-AWESD measurements, that were, if normally distributed, assessed using a paired samples T-test. If not, the non-parametrical Wilcoxon signed rank test was used. P-values ≤0.05 were considered to be statistically significant. Inter-observer reliability was assessed by the Intraclass Correlation Coefficient (ICC) and 95% confidence interval (95% CI) using a consistency, two-way random effects model based on the mean of all three raters. ICC values were interpreted as follows: values less than 0.50 reflected a poor reliability while values between 0.50 and 0.75, 0.75–0.90, or greater than 0.90 indicated moderate, good and excellent reliability, respectively [16 (link)].
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3

Statistical Analysis of Research Outcomes

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Data analysis was performed using SPSS (SPSS Statistics for macOS, Version 24.0., IBM Corp.: Armonk, NY, United States) and Excel (Microsoft Excel for macOS, Version 16.47., Microsoft Corp.: Redmond, WA, United States). Measured outcomes were found to satisfy the conditions of normality, equal variance, and independence. Therefore, statistical analysis of study data was achieved using parametric statistical methods: independent sample t-testing and one-way analysis of variance (ANOVA). A p-value less than 0.05 was considered statistically significant.
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4

Statistical Analysis of Experimental Data

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Analysis was performed with SPSS Statistics for MacOS (Version 25.0; IBM). The Student t test was used to calculate the difference in means for parametric data. The Mann-Whitney U test and chi-square analysis were used for nonparametric and categorical data, respectively. Univariate analysis was used to calculate the odds ratios.
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5

Statistical Analyses of Perioperative Characteristics

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Standard statistical analyses were performed by SPSS statistics (IBM SPSS Statistics for MacOS, Version 26.0; IBM Corp., Armonk, NY, USA). Nominal variables were denoted as frequency and percentage. Continuous variables were reported as mean and standard deviation or as median and 25th percentile (p25) and 75th percentile (p75) for non-normally distributed data. Perioperative characteristics were compared between surgeons using the chi-squared test or Fisher’s exact test (in case of frequencies less than 5) for categoric variables, the Kruskal–Wallis test for non-normal distributed continuous variables, and the one-way analysis of variance test for normally distributed continuous variables. A P-value of less than 0.05 was considered statistically significant. Missing data were reported as such.
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6

Correlation of Cartilage Biomarkers and Surgical Outcomes

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Descriptive statistics were calculated for continuous variables as means and standard deviations and percentages where appropriate. Pre- and post-operative outcomes scores, as well as CBT, were compared between cohorts using independent t-tests. Chi-squared analysis was used as appropriate to compare categorical variables between groups. Linear regression determined associations between CBT measures (Dorr classification type, FCC and FCI) and post-operative outcome scores. Logistic regression was used to determine whether CBT measures were predictive of achieving the MCID for the HOS-ADL, HOS-SS or mHHS. An a priori power analysis was performed to determine the minimum sample size required to overcome Type II error. Based on the study population of previous sports surgery studies analyzing the effect of age and gender on clinical outcome scores [2 (link)], the minimum sample size per group for a two-tailed t-test study was 27. A P value of < 0.05 was used as the level of statistical significance. Data analysis was performed using SPSS statistical software (IBM SPSS Statistics for MacOS, Version 25.0. Armonk, NY: IBM).
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7

Statistical Analysis of Quantitative and Qualitative Data

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The distribution of the quantitative data was evaluated by using the Kolmogorov–Smirnov test. Quantitative variables are reported as mean and standard deviation (SD) or median and interquartile range within squared brackets [IQR]. Qualitative variables are presented as numbers and percentages. Associations between categorical variables were assessed by using Chi-squared and Fisher’s exact tests. Risk is reported as the odd ratio (OR) with confidence interval (CI) at 95% within squared brackets. Mann and Whitney U and Kruskal–Wallis tests were used to analyze nonparametric quantitative data. Correlations analyses were carried out by using Spearman’s test. The level of statistical significance has been set at 0.05 for all the statistics; for Chi-squared and Fisher’s exact tests, a two-tailed significance was used, while, for Spearman’s test, a one-tailed one was used. All tests were performed using SPSS (IBM Corp. Released 2019. IBM SPSS Statistics for MacOS, Version 26.0. Armonk, NY: IBM Corp). The statistical power analysis was performed by using G*Power Software for MacOS v 3.1 [15 (link)].
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8

Herbivore Resistance Mechanisms in Plants

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Data of herbivore bioassay were analysed with Student’s t-test. Analyses on the contents of Bxs and phytohormones were performed using one-way analysis of variance (ANOVA) and significance was determined by post hoc test (P<0.05). Two-way ANOVA was performed to analyse the effect of time of post-pretreatment resting and priming on Bx contents, and time of resting (3, 7, and 12 d) and priming (pretreatment or not of W+OS on third leaves) were treated as two independent variables. Student’s t-test and one-way and two-way ANOVA were performed using SPSS Statistics for Mac OS (IBM Corp., USA; Version 26.0). Principal component analysis was conducted and plotted using the plotPCA in the DESeq2 of the R package (Love et al., 2014 (link)). A violin plot was made using the ggplot2 package in R software (Wickham, 2016 ).
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9

Synthetic vs. True T2-w fs MRI Analysis

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Statistical analysis was performed with SPSS (version 27.0, IBM SPSS Statistics for MacOS, IBM Corp.) and Microsoft Excel (2021). A p-value of 0.05 was set as threshold for statistical significance.
Significant difference between aSNR and aCNR of synthetic and true T2-w fs images from the ten representative datasets was evaluated using the Wilcoxon signed-rank test.
Image and fat saturation quality grading of synthetic and true T2-w fs was analyzed using descriptive statistics. Significant differences between image and fat saturation quality grading of synthetic and true T2-w fs were evaluated using the Wilcoxon signed-rank test.
The Turing test was analyzed using descriptive statistics. Significant difference real condition versus expert grading between true and synthetic T2-w fs images was evaluated using McNemar’s test.
To evaluate the intermethod agreement of pathology assessment based on the synthetic versus the original protocol, Cohen’s kappa (ĸ) coefficients were calculated [34 (link)]. Also, the interrater agreement for pathology grading was calculated using Cohen’s ĸ coefficients. Significant differences between Cohen’s ĸ coefficients were evaluated using the Wilcoxon signed-rank test.
For comparison with the gold standard, accuracy of grading was calculated and corresponding significance was evaluated using a McNemar’s test.
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10

Exploring Loneliness, Future Time Perspective, and Well-Being

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Statistical analyses were first conducted using R Core Team (2020). First, basic descriptive statistics (means, standard deviations, and frequencies) were calculated for all variables. After verifying assumptions of ordinarily and monotonicity (Wissler, 1905 (link)), Spearman's rank correlation coefficients (Savicky, 2014 ) were calculated to explore the direction and strength of potential relationships between emotional affect, FTP, life satisfaction, social relationships, and career effects. Then, after verifying that our observations were independent and have non-perfect separations, but are not normal, linear, or homoscedastic (Stoltzfus, 2011 (link)), we employed single and multivariate logistic regression analyses (R Stats Package, 2020 ; Wickham et al., 2021 ) to assess the relationship among loneliness, FTP, life satisfaction, and social relationships, controlling for potential demographic confounding variables such as race, socioeconomic status, and education level. Finally, to assess potential common variance bias, we used Harman's Single Factor Test in SPSS Version 28 (IBM Corp, 2021) (SPSS Statistics for MacOS, 2021 ).
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