Zhonghua Liu Xing Bing Xue Za Zhi. 2026 May 10;47(5):831-838. doi: 10.3760/cma.j.cn112338-20251030-00777.
ABSTRACT
Objective: To understand the epidemiological characteristics of dental caries and elevated blood pressure in children in Karst landform areas, and provide new directions for the development of targeted child health intervention strategies based on local conditions in the future. Methods: Based on the proportion of Karst landform area in Guizhou Province, 96 520 children aged 7-12 years were selected from all counties (districts) in Guizhou Province by stratified random cluster sampling from September to December 2024 for physical examinations such as dental caries detection and blood pressure measurement. A total of 54 552 primary school students at and above grade 4 were selected for questionnaire surveys. Binary logistic regression model was used for multivariate analysis on relevant factors. Results: The dental caries detection rate in children aged 7-12 years in Guizhou was 65.8%. The detection rate in girls (67.6%) was significantly higher than that in boys (64.2%) (P<0.001). In terms of ethnicity, the detection rate was highest in children of Dong ethnicity (73.2%), followed by Miao ethnicity (68.5%), Buyi ethnicity (66.9%), Tujia ethnicity (66.8%), other ethnicity (65.6%), and Han ethnicity (63.2%), the differences were significant (P<0.001). In terms of geographical distribution, the detection rate in non-Karst landform area (76.4%) was significantly higher than that in interspersed area (66.9%), area with high-proportion of Karst landform (64.3%), and area with low-proportion of Karst landform (63.5%) (P<0.001). The detection rate of elevated blood pressure was 12.4%, with higher rate in boys (12.8%) than in girls (11.9%) (P<0.001). The detection rate of elevated blood pressure in Tujia children (14.5%) was higher than that in Miao children (12.8%), children in Buyi and other ethnic groups (both 12.6%), Han children (12.0%) and Dong children (11.7%) (P<0.001). In terms of Karst landform distribution, the detection rate in interspersed area (13.4%) was higher than that in area with high-proportion of Karst landform (13.1%), area with low-proportion of Karst landform (10.3%) and non-Karst area (8.6%) (P<0.001). Logistic regression analysis showed that Karst landform distribution was a protective factor for dental caries and a risk factor for elevated blood pressure in children aged 7-12 years old (P<0.001). Conclusions: The risk for dental caries and elevated blood pressure in children aged 7-12 years old in Guizhou is associated with Karst landform distribution. Therefore, comprehensive prevention and control measures should be developed according to local conditions to effectively reduce the incidence of dental caries and elevated blood pressure in children.
PMID:42151060 | DOI:10.3760/cma.j.cn112338-20251030-00777