The oral and systemic health impact profile for periodontal disease (OSHIP‐Perio)—Part 2: Responsiveness and minimal important difference

Abstract

ObjectivesThe Oral and Systemic Health Impact Profile for Periodontal Disease (OSHIP‐Perio) was developed to measure health‐related quality of life (HRQoL) and oral health‐related quality of life (OHRQoL). This study aimed to determine the responsiveness and minimal importance difference (MID) of the OSHIP‐Perio.MethodsSubjects with periodontal disease completed the OSHIP‐Perio at baseline and six to ten weeks after non‐surgical periodontal therapy. Comparisons of the clinical variables and the OSHIP‐Perio scores before and after treatment were analysed using the Wilcoxon signed‐rank test, together with the Oral Health Impact Profile (OHIP‐49, OHIP‐14 and OHIP‐5) scores. The MIDs for all the instruments were calculated using distribution‐based methods.ResultsFifty‐one case subjects who completed periodontal treatment and the OSHIP‐Perio instrument were included for analysis. Significant improvement in all clinical variables after treatment (p < 0.001) was observed. The OSHIP‐Perio total score as well as its four‐dimensional scores (periodontal, oral function, orofacial pain and psychosocial impact) were significantly reduced after treatment (p < 0.001), indicating better OHRQoL. Findings were consistent with the other OHIP instruments. In determining the MID, the percentage point change of the OSHIP‐Perio was found to be lower than the shorter OHIP‐5 instrument when using both effect sizes (ES) (10.71% vs. 15.0% at 0.5SD) and standard error of measurement (SEM) (5.36% vs. 10.0% at 1SEM; 8.93% vs. 20.0% at 2SEM) calculations.ConclusionsThe OSHIP‐Perio demonstrated good responsiveness which was comparable to the OHIP‐49 and its short‐form derivatives. Its required percentage point change in determining its MID is smaller than the OHIP‐5.