Development of a mapping function ("crosswalk") for the conversion of scores between the Oswestry Disability Index (ODI) and the Core Outcome Measures Index (COMI).
Anne F MannionA ElferingTamas F FeketeJ PizonesF PelliseA M PearsonJ D LurieF PorchetE AghayevA Vila-CasademuntF MariauxS Richner-WunderlinF S KleinstückM LoiblF S Pérez-GruesoI ObeidA AlanayR VengustD JeszenszkyD HaschtmannPublished in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2022)
Predictions at the group level were very good and met standards justifying the pooling of data. However, we caution against using individual values for treatment decisions, e.g. attempting to monitor patients over time, first with one instrument and then with the other, due to the lower statistical precision at the individual level. The ability to convert scores via the developed mapping function should open up more centres/registries for collaboration and facilitate the combining of data in meta-analyses.
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