About this trial
The distribution- and anchor-based methods will be used to estimate the Minimal Important Difference (MID) of the OHIP-P-HIN. Two established distribution-based approaches, the standardized effect size (ES) and standardized response mean (SRM) will be calculated. The ES is calculated by dividing the mean change scores in the OHIP-P-HIN from baseline by the standard deviation of the baseline scores. And the SRM are computed as ratios of the mean change score divided by its standard deviation. The anchor-based approach will be applied by using the global transition scale as the anchor.
Eligibility criteria
Qualifiers
≥18 years of age
patients able to understand and complete questionnaires independently
confirmed diagnosis of periodontitis
Disqualifiers
Patients with systemic diseases such as acquired immunodeficiency syndrome or diabetes mellitus
pregnancy
required prophylactic antibiotic coverage prior to dental treatment,
patients with bleeding disorders
Trial design
Treatments tested in this trial
- Non Surgical Periodontal Therapy