Nine planning calculators for clinical research, each with its formula, its primary source, and its limits stated plainly. Built by an epidemiologist; the means calculators use the exact noncentral t distribution, validated against R.
The number is the easy part. A reviewer will also want the design, the analysis that matches it, the confounders, the missing-data plan, and the justification in writing. Ask Mallard generates that full statistical plan from a plain-language description of your study — starting with a free design brief that settles the design, what it estimates and the alternatives, before anything is spent on the plan itself.Tests.
Plan my study free →See also: how plans are produced and validated · plans & pricing
