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Spss software version 20

Manufactured by IBM
Sourced in United States, United Kingdom, Japan, China

SPSS software version 20.0 is a statistical analysis software package developed by IBM. It is designed to handle a wide range of data analysis tasks, including data management, statistical modeling, and reporting. The software provides a comprehensive set of tools for data manipulation, analysis, and visualization, making it a popular choice for researchers, analysts, and decision-makers across various industries.

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2 028 protocols using spss software version 20

1

Statistical Analysis of Research Data

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Kaplan-Meier analysis was conducted using IBM SPSS software version 20. Data are expressed as means ± s.d. for normally distributed variables and median (interquartile range) for non-normally distributed variables. Differences between the two groups for normally distributed variables were tested using Student’s two-sided t-test, and nonparametric data were analysed using the Mann–Whitney U-test. Differences among more than three groups were analysed using parametric (one-way analysis of variance) or nonparametric (Kruskal-Wallis test) statistical methods. All calculations were performed with Microsoft Excel 2016 or IBM SPSS software version 20. P < 0.05 was considered significant.
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2

Statistical Analysis of Experimental Data

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Statistical analysis was performed using SPSS Software Version 20 (SPSS Inc., Chicago, IL, USA). Analysis among groups was performed using the Kruskal–Wallis test because data were not normally distributed. Finally, the Mann–Whitney U test for pairwise comparison was used. The data are presented as the median, 25th, and 75th quartiles with SPSS Software Version 20 (SPSS Inc., Chicago, IL, USA). Significance was accepted at a p < 0.05 and is indicated with an “×” in the figures in Section 3.
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3

Mutation-Driven COVID-19 Severity Analysis

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For each variable site, we divided patients into two groups: “reference” and “variation.” The “reference” group included patients carrying SARS-CoV-2 which was the same as reference genome at the site, whereas the “variation” group included patients carrying SARS-CoV-2 which mutated at the site. For 12 sites, both groups contained at least three patients, so totally 12 sites were used for subsequent analysis. The patients were also separated into “severe case” and “mild case” based on whether the medical record was present. Fisher's exact test was performed using SPSS software version 20.0 (IBM, Armonk, NY, USA) to test whether severe case percentage differed significantly (p < 0.05) between two mutation status. For each of the 12 sites, the expression levels of the six inflammatory factors between groups were compared using parametric t-tests using the SPSS software version 20.0 (IBM, Armonk, NY, USA).
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4

Factors Associated with Severe Dengue Infection

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Analysis was performed using SPSS software version 20.0.0. For the purpose of comparison patients were divided into DF and DHF (including grade I to grade IV). Categorical variables were recorded as frequencies and percentages while continuous variables were recorded as means and standard deviations (SD) unless otherwise stated. Categorical and continuous variables were analyzed using Chi-Square or Fischer-Exact test and independent t-test respectively. A logistic regression model was performed to determine the factors independently associated with severe form of dengue infection (DHF). The variables with P values less than 0.25 in univariate were considered as candidates for multivariate analysis. The use of univariate P values <0.25 has advantage of tending to include more variables in multivariate analysis while traditional levels of P value such as 0.05 can fail in identifying variables known to be important [24 (link)]. Receiver operating characteristics (ROC) curve analysis was used to determine the area under the curve (AUC) for prediction accuracy. Descriptive values below 5 % (p < 0.05) were considered statistically significant.
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5

Evaluating Yogurt Formulations and Storage

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The current investigation utilized SPSS software version 20.00 (SPSS Inc., Chicago, IL, USA) for the evaluation of the impact of four different yogurt formulations and storage conditions on a range of parameters, encompassing pH, acidity, dry matter content, protein content, fat content, viscosity, probiotic viability, color measurements, total phenolic content, and total antioxidant capacity. A significance threshold of p < .05 was employed for detecting variations. To discern noteworthy differences among the results, one‐way ANOVA and Duncan's Multiple Range Test were applied. The experiments were performed in duplicate, with each analysis executed using three replicates.
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6

NaOH Impact on CMSr Film Properties

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The effect of NaOH concentrations on the properties of the CMSr film were investigated using SPSS software version 20.0 0 (SPSS Inc., Chicago, IL, USA). All measurements were analyzed in triplicate. The data were presented as the mean ± SD. Analysis of variance (ANOVA) was used to show a significant difference (p ≤ 0.05) by Duncan’s multiple range test (DMRT).
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7

Epidemiological Factors Influencing Metabolic Health

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Descriptive data analyses were performed, along with bivariate and multivariate logistic regression for sex, age, smoking status, alcohol drinking status, physical activity level, khat chewing Status, fruit and vegetable consumption, BMI, WHtR, raised blood pressure, lipid profile (normal vs abnormal) as a confounding factor. All factors with a p value < 0.2 in the bivariate analysis were further analyzed with multivariate logistic regression analysis. The data were analyzed using SPSS software version 20.00 (SPSS Inc. Chicago, IL, USA), and p values < 0.05 were considered statistically significant.
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8

Frailty Subtype Predictive Modeling

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We performed a univariate analysis using the χ2 test (categorical variables) and the Kruskal–Wallis test (continuous variables). Then, immune biomarker variables with P<0.25 and interaction terms with P <0.05 in the univariate analyses were evaluated further for inclusion in the final ordinal or multivariable disordered multi-class logistic regression to obtain OR (frailty status or frailty subtypes as dependent variable) and aOR (age, sex, education, smoking) and their 95% CI. When necessary, quartiles of inflammatory markers were used for the χ2 test and logistic regressions [47 (link)]. The highest quartile was used as the reference category. For the logistic regression, P≤0.05 was considered to indicate a statistically significant difference. The strength of the multicollinearity was examined using the variance inflation factor (VIF) and VIF>10 indicated that the model exhibited multicollinearity. The analysis was carried out using SPSS software version 20.0.0 (SPSS Inc., Chicago, IL, USA). Figures were prepared using STATA version 12.0 (STATA Corp., College Station, TX, USA) and GraphPad Prism version 8.0 (GraphPad Software, San Diego, CA, USA).
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9

Statistical Analysis of Experimental Data

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The data were analysed using SPSS software version 20.00 (SPSS Inc. Chicago, IL, USA). Data are expressed as means ± SEM. Statistical significance was assessed by one-way ANOVA followed by Tukey’s test. P < 0.05 was considered statistically significant.
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10

Supplement Effects on Exercise Performance

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In order to calculate inferential statistics for the data, the normality of the distribution was assessed with the Shapiro-Wilk test and the homoscedasticity with the Levene test. For each attempt of MVC, the reliability of the test was performed, in which the intraclass correlation (ICC) and a paired t-test were used to verify the difference between the attempts. Blood variables were compared for both protocols using a two-way analysis of variance of two factors (ANOVA) with repeated measures 2 (supplementation) × 3 (time points), followed by post hoc analysis with Tukey’s correction for multiple comparisons at each time point. For this, the sphericity of the variables was assumed through the Mauchly's test. A paired t-test was used to compare exercise performance (MVC test and ISO test) between protocols. Symptoms of gastrointestinal discomfort were compared between the two protocols in each sampling period, using the Friedman's non-parametric test. The level of significance was set at p < 0.05. All analyses were performed using SPSS software version 20.0.0 for Mac (SPSS Inc., Chicago, IL, USA).
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