Methodology

What the forecast knows—and what it does not.

CheckCheck turns applicant-reported timelines into a descriptive estimate while preserving uncertainty and unresolved cases.

The central rule: a pending case is evidence. It tells us a decision had not happened by its last observation date, so excluding it would systematically make waits look shorter.

Competing risks, not a trend line

The forecast uses the non-parametric Aalen–Johansen estimator. Clearance and rejection are modeled as separate, competing outcomes; cases still pending on the data date are right-censored. No linear extrapolation is used.

Conditioning on time already waited

Probabilities compare only with cases that remained unresolved for at least as long as the current case.

Cohort selection

The model tries the requested detail within a two-year lookback and falls back to a broader cohort when statistical support is too small.

Decision window

Percentile dates describe time to either reported terminal decision. Unsupported percentiles are never invented.

Limitations

Source and contact

Most records originate from the community site linked here. Comments may be sent to the address shown below. checkee.info · [email protected]