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Spss statistic 20

Manufactured by IBM
Sourced in United States

SPSS Statistics 20 is a software package used for statistical analysis. It provides a comprehensive set of tools for data management, analysis, and reporting. The core function of SPSS Statistics 20 is to enable users to perform a wide range of statistical procedures, including descriptive statistics, regression analysis, and hypothesis testing.

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103 protocols using spss statistic 20

1

Secular Trends in Health Behavior Counseling

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Data analysis was performed using the statistical package IBM SPSS Statistic 20. The categorical variables were presented as percentages and compared using the chi-square test. The normal approximation was used in the calculation of 95% confidence intervals for proportions. Secular trends in the extent of counselling on health behaviour between 2000 and 2014 were tested using multivariate logistic regression analysis where study year was included as a continuous variable. The same analysis was used to evaluate the associations between reporting advice on nutrition and physical activity and characteristics of respondents, as well as reported changes in health behaviours. P-values of less than 0.05 were considered statistically significant.
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2

Comparative Statistical Analysis of Tumor-Bearing Animals

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Statistical analysis of the differences between the control and tumor‐bearing animals at each time point was performed by means of the Student's t test, with a significance level of α = 0.05, and correcting for reduction of type I error using the Bonferroni correction. Cluster analysis between groups was performed to determine the breakpoints within the scale and estimate the maximum inertia centroids values. The computer program IBM SPSS Statistic 20 was used to take account of data lost either experimental errors or problems related with the experimental animals.
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3

Hypertension Treatment Efficacy Trial

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The average and standard error of age and other parameters were calculated for each group. Statistical analyses were performed using SPSS Statistic 20 (IBM, Armonk, NY, USA). The home BP values were analyzed using the mean of 5 days' data in each 7-day period. A two-way analysis of variance (ANOVA) with the post hoc Dunnett test was used to compare the results at each time point with respect to home and hospital BP values. When the variance ratio (F) was significant between groups, the mean values were compared by Student t test. Except for the home and hospital BP data, the Student t test was used to compare the change in values between the placebo group and the test group from baseline to each evaluation point. P-values less than 0.05 were considered significant.
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4

Phytochemical Profiling and Antioxidant Evaluation

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All the assays were repeated in triplicate and presented as mean standard deviation. One way ANOVA and post-hoc Turkey HSD (Honest significant difference) test was employed for the comparison of mean values of results. SPSS (IBM SPSS Statistic 20) was used to determine the significance at p < 0.05 (95% confidence interval). Spearman correlation was found among phytochemicals and antioxidant activities. LC50 and IC50 values were calculated using table curve 2D version 4 software.
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5

Repeated Measures ANOVA in SPSS

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Statistical analyses were conducted in IBM SPSS Statistic 20 software. Repeated measures ANOVAs were conducted followed by simple effects analysis. Where significance was found post-hoc tests with Bonferroni corrections were applied to identify the locus of effects and their interaction(s). In the cases where missing values were present, missing data were estimated by an unbiased iterative interpolation procedure within the analysis. The critical significance level used throughout was α = 0.05.
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6

Statistical Analysis of Experimental Data

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Results were subjected to one-way analysis of variance, calculated on GraphPad Prism version 6.0 (GraphPad Software, Inc., La Jolla, CA, USA) and SPSS Statistic 20 (IBM Corporation, Armonk, NY, USA). In addition, Dunnett’s test was applied as a post hoc test. Statistical significance is expressed as *P<0.05 according to the table of Dunnett’s tests.
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7

Statistical Analysis of Lifestyle Factors

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Data were managed and analyzed using Microsoft Office Excel 2016 and IBM SPSS Statistic 20 software (IBM Corp., Armonk, NY, USA). Categorical variables were described as frequency and percentages. Continuous variables were evaluated for normal distribution using Kolmogorov–Smirnov goodness-of-fit test. Normally distributed continuous variables were presented as mean +/− standard deviations (SDs). Non-normally distributed variables were presented as medians (interquartile ranges (IQRs)). Univariate analyses were carried out on questionnaire results about lifestyle, health, anthropometric measures and dietary habits. Analyses of statistical differences among categorical variables were carried out using Chi-square or Fisher Exact test, where appropriate. We performed unpaired Student t test and Wilcoxon–Mann–Whitney tests to assess disparities among quantitative continuous variables. All statistical tests were two sided and p < 0.05 was considered as the statistically significant threshold.
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8

Vascular Contractility and Relaxation

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Vessel responses are given in millinewtons (mN) for contraction experiments, and in percentages of the maximal contraction induced by norepinephrine for relaxation experiments. Results are given as mean ± standard error of the mean (n), where n is the number of vessels, each vessel from a different animal. Statistical analysis was performed by Levene’s test for equality of variances followed by an independent-sample t test for equality of means. All statistical analyses were performed using the IBM SPSS Statistic 20 software package (SPSS, Chicago, IL). P-values <0.05 were considered statistically significant.
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9

Age-Dependent Lipid Profiles and Methylation

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The normal distribution of all variables was assessed using the Kolmogorov-Smirnov test. Only fasting triglyceride levels were not normally distributed and therefore log-10 transformed. Men were stratified into two groups according to the median age: younger men (age <61 years old) and older men (age ≥61 years old). Categorical variables were compared using a Pearson χ2-statistic, whereas mean differences between groups for continuous variables were compared with an analysis of covariance including the following potential confounding factors: age, medication and CAD status, and followed by Bonferroni’s post-hoc comparison test. Partial Pearson’s correlation was used to assess the association between ABCA1 DNA methylation levels and plasma lipid concentrations after consideration of the same confounding factors. Results were considered statistically significant when P-values were <0.05 (two sided). All statistical analyses were performed with the IBM SPSS Statistic 20 software (release 20.0.0, SPSS, International Business Machines (IBM) Corp., NY, USA).
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10

Marbling and Sensory Characteristics of Ribeye

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The effects of different cattle breeds on marbling, physical, and sensory characteristics of ribeye steak were analysed using analysis of variance (one-way ANOVA) to determine the existence of statistical difference (p<0.05), followed by DUNCAN test to determine the statistical difference among the means (IBM SPSS Statistic 20). The spatial relationships of these properties were summarised using ANOVA-partial least squares regression (APLSR) employing the XL-STAT software (Addinsoft Inc., Brooklyn, NY, USA) to analyse the descriptive and raw instrumental data. Results from all the tests were expressed as mean±standard error.
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