### Confidence interval of a proportion or count.; Chi-square test; 2x2 contingency table; McNemar's test to analyze a matched case-control & paired comparison; binomial and sign test for two possible outcome; NNT (Number Needed to Treat); predictive values from sensitivity, specificity, and prevalence; Kappa test.

...continue to read### This page computes various statistics from a 2-by-2 table. It will calculate the Yates-corrected chi-square, the Mantel-Haenszel chi-square, the Fisher Exact Test, and other indices relevant to various special kinds of 2-by-2 tables.

...continue to read### RxC table concerns a basic two dimensional crosstable procedure. The statistical tests include Chi-squares, Gamma, Tau, Lambda, Kappa/Bowker. Formatting table and graphs are allowed.

...continue to read### The Marascuilo procedure enables you to make comparisons between all pairs of columns in a multi-group contingency. The procedure adjusts for multiple testing and is valid when the global chi-square is associated to a significant P. The total number of subjects (N) should be >40.

...continue to read### Web-based Calculator for ROC Curves

...continue to read### Web site form the Center for Evidence Based Medicine in Toronto that allows to enter values directly into a 2x2 table to calculate sensitivity, specificity, positive predict value (PPV), negative predictive value (NPV), likelihood ratios (LR+ & LR-), relative risk (RR), odd ratios (OR), absolute risk reduction (ARR), number needed to treat (NNT) etc.

...continue to read### This site from Microsoft Research calculate the false discovery rate (FDR) that is used in multiple hypothesis testing to correct for multiple comparisons. In a list of rejected hypotheses, FDR controls the expected proportion of incorrectly rejected null hypotheses (type I errors).

...continue to read### This screen computes several statistics from a table whose row and column categories form logically ordered sequences. It can accommodate a table with up to five rows and/or five columns

...continue to read### This site allows to performe Epidemiology & Lab Statistics from Study Counts, with Chi Square, NNT & "Cost to Treat" Estimates and much more

...continue to read### A 2 x 2 online table calculator for PREVALENCE, SENSITIVITY, and SPECIFICITY

...continue to read### The Goodness-of-fit test is calculated for a table 2 x C (max 14 column). The sum of values should be the same for observed and expected row. Therefore, expected values should be calculated using the sum of observed values.

...continue to read### This tool calculates a set of confidence intervals for the entered binomial trial result - the number of trials and the number of successes.

...continue to read### The web site performs a rows x columns chi square test.

...continue to read### On this page, Cohen's kappa can be calculated for the case of more than two annotators (at most 9) with multiple classes.

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