CLAIM CARD
Several clinically important outcome classes are touched by only a single source, precluding internal replication. Bone mineral density changes with growth hormone replacement therapy, for instance, are supported solely by the Xue 2013 meta-analysis; no second corpus study examines that endpoint, so the direction and magnitude cannot be independently verified within this evidence set. Single-source findings carry inherent fragility because a methodological error or population-specific confound cannot be detected through cross-study comparison.
Evidence grade: exploratory
Contradiction status: none
Publication: 5f852f5b-8941-49c3-950b-b6eed340ec3e
Provenance: Derivation Web chain
Citation Support
source_1Saleh 2023source_2Gu 2024source_3Abdalla 2026source_4Villa 2024source_5Segerer 2020