Case studies
The CLIOH study portfolio as of 2026. Most are Discovery studies on their way to becoming Triage or Classification CLIOHs once outcome data lands. CLIOH_Acetabular is the lab's one true Phenotype-Boundary instrument.
Arthrofibrosis Risk-Factor Ranking
The founding CLIOH Discovery deployment — pediatric surgeons rank 19 candidate drivers of post-operative arthrofibrosis.
What we learned
The "female-sex paradox" (a counterintuitive mid-rank for sex with a 45% win rate) is interpretable only because the slate happened to span the strength range. That accident motivated the formalization of the Strength-Spread rule that now binds every Discovery study.
Distal-Tibia Growth-Arrest Predictors
Flagship live instrument — multi-site pairwise ranking of candidate predictors of growth arrest after pediatric distal-tibia physeal injury.
What we learned
The §1.1 anchor audit flagged this as the all-contender / no-anchor cautionary case — the slate had no calibrated low-strength items, producing a compressed BT range and overlapping CIs at the bottom of the ranking.
OR Booking-Priority Criteria
Pediatric on-call attendings rank 17 case-feature criteria that drive OR booking urgency.
What we learned
Today the study ranks criteria (Discovery). Deployed on real OR-board cases with outcome linkage it matures into a Triage CLIOH — a covariate-structured BT scoring model.
ED Triage-Decision Criteria
Companion study to OR-Priority — k=16 ED triage criteria.
Interurban OR-Triage Demonstrator
A by-design Strength-Spread slate — anchors deliberately at the bottom, contenders at the top — built to demonstrate the maturation path from Discovery into Triage.
Pediatric Musculoskeletal Infection Severity
Severity-driver ranking today; the case-based version (BT case worths + outcome-validated cutpoints) is the canonical Classification maturation target.
What we learned
The one CORTICES Discovery instrument whose severity dimension self-spans the strength range without designed anchors. The maturation version uses ~100 cases linked to length-of-stay, ICU admission, and surgical-revision rate.
Borderline FAI vs Acetabular Dysplasia
The lab's one genuinely non-Discovery instrument — pairwise classification of borderline hips with outcome linkage to recover the 2-D decision boundary between FAI and acetabular dysplasia.
What we learned
A 2-D boundary problem masquerading as a 1-D ranking. Existing classifications collapse acetabular coverage × femoral morphology onto a single arbitrary threshold; the multidimensional BT recovers the boundary surface and a misclassification audit.
The studies above span the CLIOH lab's active research across multiple networks. Have a question that looks like one of these but on your own data? Take the decision tree or submit a project.