Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020

ObjectiveTo investigate the incidence and trends of early syphilis in Shandong province and provide references for syphilis prevention and control. MethodsData for this study were obtained from the China Public Health Science Data Center. Joinpoint regression was used to analyze trends in incidence...

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Main Authors: Zhenghao WU, Yu DONG, Xinyu CAI, Fengyue ZHANG, Hongqing LIU
Format: Article
Language:zho
Published: Editorial Office of Chinese Journal of Public Health 2025-04-01
Series:Zhongguo gonggong weisheng
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Online Access:https://www.zgggws.com/article/doi/10.11847/zgggws1145773
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author Zhenghao WU
Yu DONG
Xinyu CAI
Fengyue ZHANG
Hongqing LIU
author_facet Zhenghao WU
Yu DONG
Xinyu CAI
Fengyue ZHANG
Hongqing LIU
author_sort Zhenghao WU
collection DOAJ
description ObjectiveTo investigate the incidence and trends of early syphilis in Shandong province and provide references for syphilis prevention and control. MethodsData for this study were obtained from the China Public Health Science Data Center. Joinpoint regression was used to analyze trends in incidence rates, and age-period-cohort (APC) models were used to analyze the effects of age, period, and birth cohort. ResultsFrom 2006 to 2020, the incidence of early syphilis in Shandong province initially increased and then decreased. The average annual percentage change (AAPC) for primary and secondary syphilis was 6.02% and 6.25%, respectively. The proportion of cases in the 0–19 and ≥60 age groups has been increasing. Age-period-cohort analysis showed that the 20–24 age group had the highest incidence of early syphilis, with incidence rates of 10.47/100 000 and 16.67/100 000 for primary and secondary syphilis, respectively. The risk of disease first increased and then decreased over time. With the progression of birth cohorts, the risk of disease continued to increase, peaking in 2006–2010, with relative risks (RR) of 6.38 and 8.58 for primary and secondary syphilis, respectively. ConclusionsThe incidence of early syphilis in Shandong province showed a trend of first increasing and then decreasing. The 20–24 age group had the highest risk of disease, and the proportion of cases in the 0–19 and ≥60 age groups has been increasing.
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spelling doaj-art-b0528a25af0e44d69b937dfbfd73e89b2025-08-20T03:30:45ZzhoEditorial Office of Chinese Journal of Public HealthZhongguo gonggong weisheng1001-05802025-04-0141447748210.11847/zgggws11457731145773Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020Zhenghao WU0Yu DONG1Xinyu CAI2Fengyue ZHANG3Hongqing LIU4School of Public Health, Shandong Second Medical University, Weifang 261053, Shandong, ChinaSchool of Public Health, Shandong Second Medical University, Weifang 261053, Shandong, ChinaSchool of Public Health, Shandong Second Medical University, Weifang 261053, Shandong, ChinaSchool of Public Health, Shandong Second Medical University, Weifang 261053, Shandong, ChinaSchool of Public Health, Shandong Second Medical University, Weifang 261053, Shandong, ChinaObjectiveTo investigate the incidence and trends of early syphilis in Shandong province and provide references for syphilis prevention and control. MethodsData for this study were obtained from the China Public Health Science Data Center. Joinpoint regression was used to analyze trends in incidence rates, and age-period-cohort (APC) models were used to analyze the effects of age, period, and birth cohort. ResultsFrom 2006 to 2020, the incidence of early syphilis in Shandong province initially increased and then decreased. The average annual percentage change (AAPC) for primary and secondary syphilis was 6.02% and 6.25%, respectively. The proportion of cases in the 0–19 and ≥60 age groups has been increasing. Age-period-cohort analysis showed that the 20–24 age group had the highest incidence of early syphilis, with incidence rates of 10.47/100 000 and 16.67/100 000 for primary and secondary syphilis, respectively. The risk of disease first increased and then decreased over time. With the progression of birth cohorts, the risk of disease continued to increase, peaking in 2006–2010, with relative risks (RR) of 6.38 and 8.58 for primary and secondary syphilis, respectively. ConclusionsThe incidence of early syphilis in Shandong province showed a trend of first increasing and then decreasing. The 20–24 age group had the highest risk of disease, and the proportion of cases in the 0–19 and ≥60 age groups has been increasing.https://www.zgggws.com/article/doi/10.11847/zgggws1145773syphilisjoinpoint regression modelage-period-cohort (apc) modelshandong province
spellingShingle Zhenghao WU
Yu DONG
Xinyu CAI
Fengyue ZHANG
Hongqing LIU
Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
Zhongguo gonggong weisheng
syphilis
joinpoint regression model
age-period-cohort (apc) model
shandong province
title Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
title_full Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
title_fullStr Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
title_full_unstemmed Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
title_short Age-period-cohort analysis of early syphilis in Shandong province from 2006 to 2020
title_sort age period cohort analysis of early syphilis in shandong province from 2006 to 2020
topic syphilis
joinpoint regression model
age-period-cohort (apc) model
shandong province
url https://www.zgggws.com/article/doi/10.11847/zgggws1145773
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AT fengyuezhang ageperiodcohortanalysisofearlysyphilisinshandongprovincefrom2006to2020
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