Factors affecting the prevalence of permanent tooth caries among adolescents in Jiangsu Province based on a zero-inflated negative binomial model
Objective To investigate the current prevalence of permanent tooth caries among adolescents in Jiangsu Province and its influencing factors.Methods Based on the Jiangsu Provincial Surveillance Program for Common Diseases and Factors Affecting Health among Students in the 2019/2020 school year,a total of 22 755 adolescents at ages of 12 to 17 years were recruited for question-naire surveys and physical examinations.The prevalence of permanent tooth caries was estimated using the negative binomial regression model,and factors affecting the prevalence of permanent tooth caries were identified among adolescents using a zero-inflated negative bi-nomial regression model.Results The prevalence of permanent tooth caries was 43.04％among adolescents at ages of 12 to 17 years in Jiangsu Province,and a higher prevalence rate of permanent tooth caries was seen among women,adolescents at ages of 16 to 17 years,non-obese adolescents,senior high school students,adolescents living in central Jiang Province,adolescents with maternal educa-tional levels of primary school and below,adolescents with weekly moderate-and high-intensity exercises of 2 days and longer,adoles-cents with once tooth brushing daily,and students with once and more intake of desserts and fried food daily(all P values＞0.05).Ze-ro-inflated negative binomial regression analysis showed that age of 16 to 17 years(β=0.206),female(β=0.195),maternal education-al levels of university and above(β=0.171)and daily intake of desserts during the past 7 days(β=0.126)posed a positive effect on the number of permanent tooth with caries experiences,and living in central(β=-0.227)and northern Jiangsu Province(β=-0.079)posed a negative effect on the number of permanent tooth with caries experiences(all P values＜0.05).In addition,age of 16 to 17 years(β=-0.103),female(β=～0.379),living in central(β=-0.536)and northern Jiangsu Province(β=-0.304)and daily intake of desserts during the past 7 days(β=-0.287)had a negative impact on the zero-inflation of permanent tooth caries,and obesity(β=0.136),and maternal educational levels of high school(β=0.221)and university and above(β=0.248)had a positive impact on the zero-inflation of permanent tooth caries(all P values＜0.05).Conclusions The prevalence of permanent tooth caries in high among adolescents at ages of 16 to 17 years.Intensified early screening and implementation of targeted interventions as soon as possible are rec-ommended to reduce the risk of caries among adolescents.
AdolescentPermanent toothCariesPrevalenceZero-inflated negative binomial model
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