Show simple item record

dc.contributor.authorLamu, Admassu Nadew
dc.contributor.authorRobberstad, Bjarne
dc.contributor.authorHamre, Harald J.
dc.contributor.authorAlræk, Terje
dc.contributor.authorMusial, Frauke
dc.contributor.authorBjörkman, Lars
dc.date.accessioned2023-01-16T09:25:20Z
dc.date.available2023-01-16T09:25:20Z
dc.date.issued2021-10-15
dc.description.abstract<p><b> Objective</b> Many patients have medically unexplained physical symptoms (MUPS); some of them attribute their health complaints to dental amalgam fillings. The aim of this study was to assess the validity and responsiveness of General Health Complaints index (GHC-index) for measuring the symptom load in MUPS patients compared to the widely used symptom outcome measure, Giessen Subjective Complaints List (GBB-24). <p><b> Methods</b> Three outcome measures – GHC-index, GBB-24, and Munich Amalgam Scale (MAS) – were administered at baseline and 12 months after removal of all dental amalgam restorations. The validity and responsiveness of these symptom measures were tested against external anchors: bodily distress syndrome (BDS), SF-36 vitality, and visual analogue scale (VAS). We tested both convergent and known group validities. We also examined the predictive validity and responsiveness to changes for each instrument. <p><b> Results</b> All the main outcome measures showed evidence of convergent and known group validities. The GHC-index, GBB-24 and MAS were all able to detect the anticipated differences in BDS and Energy. But the GBB-24 was more efficient in discriminating the BDS compared with the GHC-index (relative efficiency: RE = 0.69; 95% CI: 0.41–0.96) and MAS (RE = 0.59; 95% CI: 0.32–0.86). Each main outcome variable revealed good predictive validity for vitality (standardized coefficient: b ≈ 0.71 and R2 ≈ 0.50). Moderate to high sensitivity to change over time was demonstrated, with GHC-index performing better. <p><b> Conclusion</b> The GHC-index is a valid and responsive instrument for assessing symptom load in MUPS patients attributing their health complaints to amalgam fillings and undergoing amalgam removal.en_US
dc.identifier.citationLamu AN, Robberstad B, Hamre HJ, Alræk T, Musial F, Björkman L. Validity and responsiveness of GHC-index in patients with amalgam-attributed health complaints. Acta Odontologica Scandinavica. 2022;80(3):226-233en_US
dc.identifier.cristinIDFRIDAID 2092579
dc.identifier.doi10.1080/00016357.2021.1989032
dc.identifier.issn0001-6357
dc.identifier.issn1502-3850
dc.identifier.urihttps://hdl.handle.net/10037/28245
dc.language.isoengen_US
dc.publisherTaylor and Francis Groupen_US
dc.relation.journalActa Odontologica Scandinavica
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleValidity and responsiveness of GHC-index in patients with amalgam-attributed health complaintsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record

Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)