• A cross-national comparison of income gradients in oral health quality of life in four welfare states: application of the Korpi and Palme typology.

      Sanders, A E; Slade, G D; John, M T; Steele, J G; Suominen-Taipale, A L; Lahti, S; Nuttall, N M; Allen, P Finbarr; The University of North Carolina at Chapel Hill, North Carolina, NC 27599, USA. anne_saunders@dentistry.unc.edu (2009-07)
      The extent to which welfare states may influence health outcomes has not been explored. It was hypothesised that policies which target the poor are associated with greater income inequality in oral health quality of life than those that provide earnings-related benefits to all citizens.
    • Determining the minimally important difference for the Oral Health Impact Profile-20.

      Allen, P Finbarr; O'Sullivan, Maeve; Locker, David; Department of Restorative Dentistry, Cork University Dental School & Hospital, Wilton, Cork, Ireland. f.allen@ucc.ie (2009-04)
      In the context of clinical trials, measurement of change is critical. The aim of this study was to determine the minimally important difference (MID) for the Oral Health Impact Profile-20 (OHIP-20) when used with partially dentate patients undergoing treatment that included the provision of removable partial dentures. In a prospective clinical trial, 51 consecutive patients were provided with removable partial dentures. In addition to demographic and dental status data, patients completed an OHIP-20 prior to treatment. One month postoperatively, patients completed a post-treatment OHIP-20 and a global transition scale. Domains assessed in the global transition scale were appearance, ability to chew food, oral comfort, and speech. The MID for the OHIP-20 was calculated using the anchor-based approach. From the initial sample of 51 patients, 44 completed post-treatment questionnaires and were included in the analysis. Change scores in the four transition domains indicated that new dentures had a positive impact in the majority of subjects, especially in perceived impact on chewing and appearance. The study provided a guideline as to what constitutes the MID for the OHIP-20. This benchmark can be used when interpreting the impact of clinical intervention for replacing missing teeth and for power calculation in statistical analyses.
    • A qualitative study of trends in patient preferences for the management of the partially dentate state.

      Cronin, Mary; Meaney, Sarah; Jepson, Nicholas J A; Allen, P Finbarr; Department of Public Health and Epidemiology, Brookfield, Cork, Ireland. (2009-06)
      To identify factors influencing attitudes of partially dentate adults towards dental treatment in Ireland.