Free research tools · Page 10

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Screening adjudication queue

Separate reviewer disagreement, pending decisions and concordant exclusions.

Known-item retrieval sensitivity

Check whether a search retrieves a prespecified set of known eligible records.

Data dictionary version comparison

Find removed fields, new fields and changes in declared field types across two schemas.

Monte Carlo permutation p-value audit

Calculate a plus-one tail probability and check the resolution of a random permutation test.

Spearman–Brown Test Length Planner

Project reliability under parallel-item assumptions and round a target length upward.

Independent Poisson Rate Ratio

Compare event counts per exposure with an approximate log-Wald 95% interval.

Category Diversity Summary

Describe categorical distributions with Shannon entropy and effective category counts.

Binary Prediction Score Audit

Compute a binary Brier score from groups sharing an identical predicted probability.

Paired Mean Confidence Interval

Calculate a two-sided 95% t interval from the mean and SD of within-pair differences.

Rounded Percentage Count Checker

Find integer event counts compatible with a stated percentage and half-up rounding.

Standardized Covariate Balance Explorer

Compare continuous and binary baseline covariates with explicit standardization denominators.

Logistic Interaction Scenario Explorer

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