#Statcalc online software
#Statcalc online series

If the odds ratio or risk ratios for strata in a series of stratified tables for the tests are not similar, then interaction between the stratifying factor and the risk factor are present.

If the weighted odds ratio or risk ratio (not for case-control studies) has confidence limits that do not include 1.0, there is a statistical association with 95% confidence between the disease and the exposure without confounding by the stratifying factor. The Adjusted Mantel-Haenszel and Adjusted Mantel-Haenszel confidence limits provide additional measures. If the ratios are identical, there was no confounding by sex. The degree of confounding can be judged by comparing the crude and weighted odds ratios. Scarica StatCalc per macOS 10.13 o versione successiva e comincia a usarlo sul tuo Mac. If tables are created for male and female, confounding by sex is removed. Leggi le recensioni, confronta le valutazioni dei clienti, guarda le istantanee e ottieni ulteriori informazioni su StatCalc. The Mantel-Haenszel weighted odds ratio, risk ratio, summary chi square, and p-value calculations combine results from different strata to remove confounding caused by the variables used for stratification. If age, sex, and city are confounders, separate tables will be made for each possible combination of age group, sex, and city. In the simplest case, this could mean separate male and female tables if sex is the potential confounder. The calculator will return both the minimum sample size required to detect the. Stratification means making a separate table of disease by exposure for each possible confounder combination. This calculator will compute the sample size required for a study that uses a structural equation model (SEM), given the number of observed and latent variables in the model, the anticipated effect size, and the desired probability and statistical power levels. Age is a frequent confounder, although any factor other than the main exposure being considered can be treated as a confounder. A confounding factor is one that is associated with the disease and the exposure, but may not be of interest or observed. If confounding is present, associations between disease and exposure can be missed or falsely detected. It doesn't require heavy experience with statistical software, so it can be figured out by casual and advanced users alike.Stratifying a dataset separates the population into distinct categories based on levels of a parameter (i.e., sex).

Taking into account its intuitive and practical options, StatCalc comes in handy to all users looking for a simple and effective way to perform statistical calculations. It used low CPU and RAM, so it didn't hamper system performance. We haven't come across any stability issues in our tests, thanks to the fact that the app didn't hang, crash or display error dialogs. The output viewer lets you make a text selection to copy the statistics to the Clipboard.įurthermore, StatCalc implements options for importing and exporting tab-delimited and comma-delimited files, as well as for printing output data. When it comes to decision tools, you can create decision tables, perform a queuing analysis, check out constant dollars, or calculate price elasticity. All you have to do is enter the necessary data. You can explore and perform calculations within a multitude of procedures, such as frequencies, descriptives, weighted mean, diagnostic accuracy, goodness of fit, correlation, along with OLS or logistic regression. This calculator will tell you the minimum sample size required for a hierarchical multiple regression analysis i.e., the minimum sample size required for a significance test of the addition of a set of independent variables B to the model, over and above another set of independent variables A. Clear-cut interfaceĪfter a brief and uneventful setup operation, you are welcomed by a user-friendly interface which consists from a normal window with a plain and simple structure split into three tabs dedicated to statistical tools, decision utilities, and the output viewer, respectively. A-priori Sample Size Calculator for Hierarchical Multiple Regression. It offers support for decision tools and an output viewer.

#Statcalc online software

StatCalc is a comprehensive, yet simple-to-use software utility that enables you to perform and compare statistical calculations.