Dataset Information

Optimal Examination Sites for Periodontal Disease Evaluation: Applying the Item Response Theory Graded Response Model.

ABSTRACT: Periodontal examination data have a complex structure. For epidemiological studies, mass screenings, and public health use, a simple index that represents the periodontal condition is necessary. Periodontal indices for partial examination of selected teeth have been developed. However, the selected teeth vary between indices, and a justification for the selection of examination teeth has not been presented. We applied a graded response model based on the item response theory to select optimal examination teeth and sites that represent periodontal conditions. Data were obtained from 254 patients who participated in a multicenter follow-up study. Baseline data were obtained from initial follow-up. Optimal examination sites were selected using item information calculated by graded response modeling. Twelve sites-maxillary 2nd premolar (palatal-medial), 1st premolar (palatal-distal), canine (palatal-medial), lateral incisor (palatal-central), central incisor (palatal-distal) and mandibular 1st premolar (lingual, medial)-were selected. Mean values for clinical attachment level, probing pocket depth, and bleeding on probing by full mouth examinations were used for objective variables. Measuring the clinical parameters of these sites can predict the results of full mouth examination. For calculating the periodontal index by partial oral examination, a justification for the selection of examination sites is essential. This study presents an evidence-based partial examination methodology and its modeling.

SUBMITTER: Nomura Y

PROVIDER: S-EPMC7700480 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Optimal Examination Sites for Periodontal Disease Evaluation: Applying the Item Response Theory Graded Response Model.

Nomura Yoshiaki Y Morozumi Toshiya T Fukuda Mitsuo M Hanada Nobuhiro N Kakuta Erika E Kobayashi Hiroaki H Minabe Masato M Nakamura Toshiaki T Nakayama Yohei Y Nishimura Fusanori F Noguchi Kazuyuki K Numabe Yukihiro Y Ogata Yorimasa Y Saito Atsushi A Sato Soh S Sekino Satoshi S Sugano Naoyuki N Sugaya Tsutomu T Suzuki Fumihiko F Takahashi Keiso K Takai Hideki H Takashiba Shogo S Umeda Makoto M Yoshie Hiromasa H Yoshimura Atsutoshi A Yoshinari Nobuo N Nakagawa Taneaki T

Journal of clinical medicine 20201121 11

Periodontal examination data have a complex structure. For epidemiological studies, mass screenings, and public health use, a simple index that represents the periodontal condition is necessary. Periodontal indices for partial examination of selected teeth have been developed. However, the selected teeth vary between indices, and a justification for the selection of examination teeth has not been presented. We applied a graded response model based on the item response theory to select optimal ex ...[more]

PMID: 33233427

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Project description:BackgroundThe investigation of patient-reported outcomes and psycho-oncological interventions mainly focuses on psychological distress or psychopathology. However, the recognition of the equal importance of positive mental health (PMH) has increased lately. The PMH-scale is a brief questionnaire allowing to assess well-being in individuals in the general population and in patients. Previous studies evaluated the psychometric properties of the PMH-scale using classical test theory (CTT). This study is the first to investigate the PMH-scale in patients with cancer using item analysis according to the Rasch model.MethodsIn total, N = 357 cancer patients participated in the study. A Rasch analysis of the PMH-scale was conducted including testing of unidimensionality, local independence, homogeneity and differential item functioning (DIF) with regard to age, gender, type of cancer, the presence of metastases, psycho-oncological support, and duration of disease. Additionally, the ordering of the item thresholds as well as the targeting of the scale were investigated.ResultsAfter excluding one misfitting item and accounting for local dependence by forming superitems, a satisfactory overall fit to the Rasch model was established (χ2 = 30.34, p = 0.21). The new PMH-8 scale proved to be unidimensional, and homogeneity of the scale could be inferred. All items showed ordered thresholds, there was no further item misfit. DIF was found for age, but as the impact of DIF was not substantial, no adjustment related to the age-DIF had to be made. The Person Separation Index (PSI = 0.89) was excellent, indicating excellent discriminatory power between different levels of positive mental health. Overall, the targeting of the PMH-8 was good for the majority of the present sample. However, at both ends of the scale item thresholds are missing as indicated by a slight floor effect (1.4%) and a considerable ceiling effect (9.8%).ConclusionsOverall, the results of the analysis according to the Rasch model support the use of the revised PMH-scale in a psycho-oncological context.

Dataset Information

Optimal Examination Sites for Periodontal Disease Evaluation: Applying the Item Response Theory Graded Response Model.

Publications

Optimal Examination Sites for Periodontal Disease Evaluation: Applying the Item Response Theory Graded Response Model.

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