Common-mix Stratified Rate Comparison

How to use Common-mix Stratified Rate Comparison

Compute each group’s success fraction within every named stratum, normalize your nonnegative weights, and apply that same weight vector to both groups. Exact crude rates remain beside the standardized difference so aggregation effects can be inspected.

1. Enter model json (schema and units below).
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• Plain decimal JSON numbers or strings, at most six fractional places, magnitude at most 1,000,000,000; raw numeric spellings and duplicate object members are checked. Exact rational arithmetic is capped at 8,192 bits. Text is at most 30,000 characters; a local JSON download preserves exact fractions or full stored approximate numbers. 1–100 distinct strata, positive whole denominators up to 1,000,000,000, successes within each denominator and positive total weight. Descriptive arithmetic only; no causal adjustment, significance interval, missing-stratum imputation or health/policy recommendation.
• Local calculation only; no input persistence or external lookup. Text/JSON is limited to 30000 characters and output to 1000000 characters. Numeric model inputs and precision/work limits are stated on this page. Approximate JSON numbers retain full stored values; exact arithmetic outputs retain decimal or fraction strings. Unsupported states fail explicitly.