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  • Title: Assessing association of dental caries with child oral impact on daily performance; a cross-sectional study of adolescents in Copperbelt province, Zambia.
    Author: Anthony SN, Kahabuka FK, Birungi N, Åstrøm AN, Siziya S, Mbawalla HS.
    Journal: Health Qual Life Outcomes; 2023 May 18; 21(1):47. PubMed ID: 37198633.
    Abstract:
    BACKGROUND: Dental caries and child oral impact on daily performance (C-OIDP) have been linked in several studies. However, the studies used caries indices, which limit the ability to examine how C-OIDP prevalence varies across various stages of the dental caries process. Furthermore, cross-cultural differences between Zambia and other African countries where the C-OIDP instrument has been widely used necessitate testing its pychometric properties. This study's primary aim was to evaluate the association between dental caries and C-OIDP. Secondarily, the study reports the psychometric properties of the C-OIDP index among Zambian adolescents. METHODS: A cross-sectional study was conducted between February and June 2021 among grade 8-9 adolescents in Copperbelt province, Zambia. A multistage cluster sampling method was used to select participants. Using a pretested self-administered questionnaire, socio-demographics, oral health behaviors, self-reported oral health, and C-OIDP were evaluated. The test-retest and internal consistency reliability of the C-OIDP were evaluated. The Caries Assessment and Treatment Spectrum (CAST) was used to evaluate dental caries. Adjusted odd ratios and 95% confidence intervals were used to evaluate the association between dental caries and C-OIDP after adjusting for confounders identified by a directed acyclic graph. RESULTS: Among 1,794 participants, 54.0% were females, while 56.0% were aged 11-14 years. About a quarter (24.6%) had one or more teeth at the pre-morbidity stage, 15.2% at the morbidity, 6.4% at the severe morbidity and 2.7 at the mortality stage. The internal consistency reliability of the C-OIDP Cohen's Kappa was 0.940, while the Kappa coefficients of the C-OIDP items ranged from 0.960 to 1.00. Participants with severe caries had a high prevalence of C-OIDP, with rates for morbidity, severe morbidity, and mortality stages being 49.3%, 65.3%, and 49.3%, respectively. Oral impacts were 2.6 times (AOR 2.6, 95% CI 2.1-3.4) more likely to be reported by participants with dental caries than those without caries. CONCLUSIONS: Dental caries was associated with high reporting of C-OIDP, and C-OIDP prevalence was high among participants in the severe stages of the caries process. The English version of the C-OIDP demonstrated adequate psychometric characteristics for assessing OHRQoL among Zambian adolescents.
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