Free research tools · Page 4

Standardized Covariate Balance Explorer

Compare continuous and binary baseline covariates with explicit standardization denominators.

Translate four specified logit coefficients into probabilities and contrasts for two binary predictors.

Audit simulation probability precision and plan a conservative number of independent replicates.

Transform a mean, SD, variance and interval endpoints with an explicit linear unit conversion.

Bound group risks and their difference by assigning every unresolved binary outcome in both directions.

Reconcile ordered event, censoring and entry counts and audit product-limit survival steps.

Estimate a binomial proportion and an approximate 95% Wilson score interval, including zero-event samples.

Audit a crude odds ratio and approximate log-Wald interval from four positive independent-group cell counts.

Estimate an independent-group risk difference with a Newcombe hybrid Wilson confidence interval.

Summarize fictional positive observations with a geometric mean and multiplicative geometric SD factor.

Distinguish elapsed civil days, inclusive date counts, and day-zero versus day-one indexing.

Reconcile overlapping missing counts, complete records and pairwise available counts from aggregate patterns.