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Statistical package for the social sciences spss for windows version 19

Manufactured by IBM
Sourced in United States

SPSS for Windows, version 19.0, is a statistical software package designed for data analysis. It provides a comprehensive set of tools for managing, analyzing, and presenting data. The core function of SPSS is to enable users to perform a wide range of statistical analyses, including descriptive statistics, hypothesis testing, regression analysis, and more.

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3 protocols using statistical package for the social sciences spss for windows version 19

1

Survival Analysis of Major Limb Amputations

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Kaplan-Meier method was used to estimate the survival probability for differing survival times (time to event). Each variable was entered into a multivariate Cox regression model to identify the independent risk factors associated with mortality. Differences in survival and clinical data were calculated between the minor and major LEA groups using the Kaplan-Meier method and log rank test for survival, the Student’s t test for continuous variables, and Pearson’s chi-square test for categorical variables. In addition, multivariate logistic regression analysis was performed including age, smoking status, hypertension, MACEs, renal function and PAD to identify the independent risk factors predicting the outcomes of the patients with major LEAs.
All statistical analyses were performed using the Statistical Package for the Social Sciences (SPSS for Windows, version 19.0, IBM Corp., Armonk, NY). Statistical significance was defined as a P value <0.05.
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2

Risk Factors for Adverse Outcomes in Diabetic Foot Infections

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Age, duration of diabetes, wound extent size, and HbA1c level were used as continuous variables, and gender, smoking status, comorbidities, and PEDIS score (except extent size) were used as categorical variables. Comparisons between patients with or without SIRS were performed using the Mann–Whiney test for continuous variables and Pearson’s chi-square test for categorical variables. Each factor odds ratio to the presence of SIRS was calculated via adjusted model of logistic regression. The same statistical method was used in comparing the two groups with different treatment outcome of the total DFI patients with SIRS. The significant risk factors in the univariate analysis found above were then entered into a multivariate logistic regression model to identify independent risk factors to adverse outcome among these patients. All statistical analyses were performed using the Statistical Package for the Social Sciences (SPSS for Windows, version 19.0, IBM Corp., Armonk, NY, USA) data analysis software.
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3

Comparative Analysis of Vein Treatment Outcomes

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Numerical variables were expressed as mean and standard deviation, or median and interquartile range, and minimum and maximum values. Categorical variables were described as absolute and relative frequencies. Both groups were compared in relation to demographic data, comorbidities and outcomes using Fisher's exact test or χ2 test for categorical variables, and the Student's t-test or Mann-Whitney's test for numerical variables.
Models of generalized estimating equations were adjusted considering the relation between the two evaluations performed in the same patient, and the results were presented by estimated means and a 95% confidence interval. The models were adjusted by the Poisson distribution in the case of the R-VCSS, and by normal distribution for the quality of life score. For the CEAP classification, the adjustment was performed with multinomial distribution, and binomial distribution was used for the recanalization of treated saphenous vein in all patients analyzed.
The analyses were conducted using the IBM Statistical Package for the Social Sciences (SPSS) for Windows, version 19.0 (IBM Corp., Armonk, NY, USA), and significance level was set at 0.05.
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