Vassarstats

Manufactured by GraphPad

Sourced in United States

VassarStats is a free online statistical computation resource. It provides a platform for users to perform various statistical analyses, including t-tests, ANOVA, correlation, regression, and more. The tool is designed to be user-friendly and accessible, allowing researchers and students to analyze data without the need for specialized statistical software.

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Lab products found in correlation

3 protocols using vassarstats

Statistical Analysis of Research Data

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Descriptive statistics were used to summarize demographic data. Results were reported as medians and IQRs, means with standard deviations, or counts and frequencies Continuous variables were compared using the t-test or one-way analysis of variance (ANOVA). Categorical dependent parameters were compared using the chi-square test and Fisher’s exact test. Cut-off values were identified following Youden index of ROC curve. All tests were two-sided, and a P-value < 0.05 was considered significant. The Statistical Package for Social Sciences (SPSS) 25.0 software (IBM, Armonk, NY, USA), VassarStats (VassarStats.net), and the GraphPad Prism (version 8.2.1) (GraphPad Software, San Diego, CA, USA) were used for statistical analyses and illustrations.

Xu J., Wang W., Ye H., Pang W., Pang P., Tang M., Xie F., Li Z., Li B., Liang A., Zhuang J., Yang J., Zhang C., Ren J., Tian L., Li Z., Xia J., Gale R.P., Shan H, & Liang Y. (2021). A predictive score for progression of COVID-19 in hospitalized persons: a cohort study. NPJ Primary Care Respiratory Medicine, 31, 33.

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Comparison of Antiplatelet Therapy Cohorts

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The patients included in this study (cohort 2) were compared to a historical cohort (cohort 1) with abnormal MOCHA who were treated only with antiplatelet therapy during the follow-up period. The cohort 1 data were obtained from a previously published study (7 (link)). Independent t-tests were used for continuous variables. Categorical variables were compared with Pearson χ² or Fisher exact test. Non-parametric comparison was performed using the Mann–Whitney U-test. Statistical analysis was performed using a combination of programs, including SPSS v25, Vassar Stats, and GraphPad. p-Values were calculated, and statistical significance was determined to be p < 0.05.

Patel K., Mikhael E., Liu M., Rangaraju S., Ellis D., Duncan A., Belagaje S., Belair T., Henriquez L, & Nahab F. (2021). Anticoagulation Therapy Reduces Recurrent Stroke in Embolic Stroke of Undetermined Source Patients With Elevated Coagulation Markers or Severe Left Atrial Enlargement. Frontiers in Neurology, 12, 695378.

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Alar Toxicity Assessment in Drosophila

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Probit analysis was performed for the determination of LC₅₀ of Alar in late 2^nd instar larvae of Drosophila melanogaster. The treated and control sets were compared using 2×2 ANOVA for the morphological parameters having sex specific difference. We performed ‘two-way ANOVA’ to find if there was an interaction between culture temperature and Alar exposure on the morphological and life history trait of Drosophila melanogaster. One-way ANOVA was performed for life history parameters, where sex is not a significant variable. We recorded mean and median fecundity and compared the values for treated and control sets using t-test. Daywise fecundity is also recorded and compared using one-way ANOVA. Variations in the number of sternopleural bristles on both left and right body sides of control and treated flies (males and females separately) were compared and analyzed by t-test. For testing male lethality we compared the female:male ratio value by Chi square method.
The values of three selected parameters for DNA damage (Tail Length, % Tail DNA and Tail Moment) through comet assay were compared using Student’s t-test. Statistical analyses were performed in SPSS (for Probit analysis), VassarStats (for ANOVA) and GraphPad (for t-test) statistical software.

Roy S.S., Begum M, & Ghosh S. (2018). Exploration of teratogenic and genotoxic effects of fruit ripening retardant Alar (Daminozide) on model organism Drosophila melanogaster. Interdisciplinary Toxicology, 11(1), 27-37.

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