This article is translated by China Science Software Network MedCalc Medical Statistics Software Data management Collect spreadsheets, import up to 16384 columns, 100000 rows; Handling missing data correctly; Easily exclude outliers; Built-in WYSIWYG text editor; Can import Excel, Excel 2007, SPSS, Dbase and Lotus files, as well as SYLK, DIF files or l plain text format files; Easily select subgroups for statistical analysis. MedCalc Reference Comprehensive help documentation PDF manual The MedCalc website has a complete manual in HTML format. Dialog-style context helper Statistical function Summary statistics Outlier detection Distribution Histogram Cumulative frequency distribution Conventional map Dot matrix Box and whisker Correlation Correlation coefficient Partially related Level related Scatter plot return return Scatter plot and regression line Multiple Regression Logistic regression Probability regression (dose response analysis) Nonlinear regression T test One-sample t test Independent sample t test Paired sample t test Rank sum test Symbol rank sum test (one sample) Mann-Whitney test (independent sample) Wilcoxon rank sum test (pairing) Variance ratio test (F test) ANOVA One-way analysis of variance Two-way analysis of variance Covariance analysis Repeated measurement analysis of variance Kruskal Wallis test Friedman test Cross (categorical data) Frequency meter and chi-square test Fisher exact test McNemar test Cochran Q test Relative risk to odds ratio Frequency histogram subsistence analysis Kaplan Meier survival curve Cox proportional hazard regression Series measurement Reference interval Reference interval Age-related reference interval Method comparison and evaluation Bland Altman map Multi-disciplinary multi-measurement Bland Altman diagram Comparison of various methods Mountain map Daming regression Passing and Bablok regression Repeated measurement of coefficient of variation Agreement and reaction Group correlation coefficient Consistency correlation coefficient Inter-Tester Agreement (Kappa) Cronbach Alpha Responsiveness ROV curve analysis ROV curve analysis Interactive point map Figure VS standard value Figure VS prevalence Predictive value Likelihood ratio ROV curve comparison Create a form Statistical summary form Related tables and related diagrams Independent sample comparison Paired sample comparison Multi-frequency table Introduction to Meta Analysis Continuous measurement Related proportion Relative risk Risk difference Ratio ratio Area under the ROC curve General inverse variance method Summary data verification Average test Partial test Chi-square test 2x2 form Fisher exact test Pairing ratio McNemar test Comparative method (t test) Standard deviation comparison (F test) Correlation coefficient comparison Comparison of two ratios Comparison of area under independent ROC curve Rate confidence interval Comparison of two ratios Relative risk Ratio ratio Agreement between testers Diagnostic test Likelihood ratio (2xk table) Sample size calculation Single mean Single ratio Comparison of the two methods Paired sample t test Comparison of two ratios McNemar test Correlation coefficient Survival analysis (log rankal test) Bland Altman map Area under the ROC curve Comparison of two ROC curves Confidence interval estimate sample size Single mean Single ratio Mean difference Paired sample mean difference Differences in different proportions Pairing ratio difference Repeated measurement of coefficient of variation Other graphics Data comparison chart Multiple comparison chart Group multiple comparison chart Multivariate graph Group multivariate graph Multi-line diagram Control Charts Youden map Polar map Forest map Function graph ROC curve analysis MedCalc is a reference software for curve analysis, and the curve analysis model includes: The area under the curve of the standard error (AUC), 95% confidence interval, P value, provides DeLong et al. (1988) and Hanley & McNeil (1982, 1983) method selection; Sensitivity, specificity, likelihood ratio, 95% positive and negative predictive value list for all possible thresholds; ROC curve with 95% confidence limit; The threshold can be selected to correspond to the sensitivity and specificity of the interactive point map and automatic calculation; The sensitivity, specificity or cost of the graphic vs. standard value; a plot of predicted values ​​versus prevalence; Interval likelihood ratio Up to 6 ROC curves can be compared: area difference under ROC curve, standard error, 95% confidence interval and P value; The sample size calculation of the area under the ROC curve is compared with the ROC curve; Graphics Various graphics Data point identification in the figure Draw text boxes, lines, arrows, and connectors Name, save, and remember graphics and statistics Statistics in the graph window Save graphics in BMP, PNG, GIF, PCX, JPG or TIF format or in PowerPoint slides (*.pptx) format Bird Cage Feeders,Bird Water Feeders,Platform Bird Feeders,Hopper Bird Feeders,Tube Bird Feeders,Mesh & Thistle Bird Feeders Ningbo New Glory International Trading Co.,Ltd , https://www.newglory-pet.com