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Contextual effects in the occurrence of periodontal attachment loss and necrotizing gingival lesions among adolescents.
Eur J Oral Sci. 2009 Oct; 117(5):547-54.EJ

Abstract

The aim of this study was to assess and quantify the random effects resulting from clustering in the following individual-level periodontal outcomes: presence of clinical attachment loss of > or = 1 mm (CAL1), presence of clinical attachment loss of > or = 3 mm (CAL3), and presence of necrotizing ulcerative gingivitis (NUG); or in the following class-level periodontal outcomes: number of students with CAL1, number of students with CAL3, and number of students with NUG. Mixed-effects logistic regression analysis was used to model these outcomes among 9,162 adolescents in 310 classes in 98 schools spread over 20 communes in the Province of Santiago, Chile, who had been examined for clinical attachment level and NUG, and had completed questionnaires on oral health-related behaviors. The results of all six analyses demonstrated statistically significant random effects, which in all analyses were particularly related to the schools, whereas the class effects were smaller and the commune random effects were almost negligible. The random effects were quantified using the median odds ratio (MOR), and the class-level MOR ranged between 1.05 and 1.51, whereas the school-level MOR values ranged from 2.07 to 2.39. The results of the study demonstrate the potential of the application of multilevel modeling to periodontal epidemiologic data, over and beyond the conventional use of the technique to account for the intrinsic sites-teeth-subject hierarchy in periodontal data.

Authors+Show Affiliations

Department of Periodontology, School of Dentistry, Faculty of Health Sciences, University of Aarhus, Aarhus, Denmark. rlopez@odont.au.dkNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19758251

Citation

Lopez, Rodrigo, et al. "Contextual Effects in the Occurrence of Periodontal Attachment Loss and Necrotizing Gingival Lesions Among Adolescents." European Journal of Oral Sciences, vol. 117, no. 5, 2009, pp. 547-54.
Lopez R, Frydenberg M, Baelum V. Contextual effects in the occurrence of periodontal attachment loss and necrotizing gingival lesions among adolescents. Eur J Oral Sci. 2009;117(5):547-54.
Lopez, R., Frydenberg, M., & Baelum, V. (2009). Contextual effects in the occurrence of periodontal attachment loss and necrotizing gingival lesions among adolescents. European Journal of Oral Sciences, 117(5), 547-54. https://doi.org/10.1111/j.1600-0722.2009.00658.x
Lopez R, Frydenberg M, Baelum V. Contextual Effects in the Occurrence of Periodontal Attachment Loss and Necrotizing Gingival Lesions Among Adolescents. Eur J Oral Sci. 2009;117(5):547-54. PubMed PMID: 19758251.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contextual effects in the occurrence of periodontal attachment loss and necrotizing gingival lesions among adolescents. AU - Lopez,Rodrigo, AU - Frydenberg,Morten, AU - Baelum,Vibeke, PY - 2009/9/18/entrez PY - 2009/9/18/pubmed PY - 2009/12/16/medline SP - 547 EP - 54 JF - European journal of oral sciences JO - Eur J Oral Sci VL - 117 IS - 5 N2 - The aim of this study was to assess and quantify the random effects resulting from clustering in the following individual-level periodontal outcomes: presence of clinical attachment loss of > or = 1 mm (CAL1), presence of clinical attachment loss of > or = 3 mm (CAL3), and presence of necrotizing ulcerative gingivitis (NUG); or in the following class-level periodontal outcomes: number of students with CAL1, number of students with CAL3, and number of students with NUG. Mixed-effects logistic regression analysis was used to model these outcomes among 9,162 adolescents in 310 classes in 98 schools spread over 20 communes in the Province of Santiago, Chile, who had been examined for clinical attachment level and NUG, and had completed questionnaires on oral health-related behaviors. The results of all six analyses demonstrated statistically significant random effects, which in all analyses were particularly related to the schools, whereas the class effects were smaller and the commune random effects were almost negligible. The random effects were quantified using the median odds ratio (MOR), and the class-level MOR ranged between 1.05 and 1.51, whereas the school-level MOR values ranged from 2.07 to 2.39. The results of the study demonstrate the potential of the application of multilevel modeling to periodontal epidemiologic data, over and beyond the conventional use of the technique to account for the intrinsic sites-teeth-subject hierarchy in periodontal data. SN - 1600-0722 UR - https://www.unboundmedicine.com/medline/citation/19758251/Contextual_effects_in_the_occurrence_of_periodontal_attachment_loss_and_necrotizing_gingival_lesions_among_adolescents_ L2 - https://doi.org/10.1111/j.1600-0722.2009.00658.x DB - PRIME DP - Unbound Medicine ER -