Temporal trends of preterm birth in Shenzhen, China: a retrospective study
Abstract Background Preterm birth is the leading cause of child mortality under 5 years of age. Temporal trends in preterm birth rates are highly heterogeneous among countries and little information exists for China. To address this data gap, we investigated annual changes in preterm birth incidence...
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| Format: | Article |
| Language: | English |
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BMC
2018-03-01
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| Series: | Reproductive Health |
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| Online Access: | http://link.springer.com/article/10.1186/s12978-018-0477-8 |
| _version_ | 1823941762227372032 |
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| author | Changchang Li Zhijiang Liang Michael S. Bloom Qiong Wang Xiaoting Shen Huanhuan Zhang Suhan Wang Weiqing Chen Yan Lin Qingguo Zhao Cunrui Huang |
| author_facet | Changchang Li Zhijiang Liang Michael S. Bloom Qiong Wang Xiaoting Shen Huanhuan Zhang Suhan Wang Weiqing Chen Yan Lin Qingguo Zhao Cunrui Huang |
| author_sort | Changchang Li |
| collection | DOAJ |
| description | Abstract Background Preterm birth is the leading cause of child mortality under 5 years of age. Temporal trends in preterm birth rates are highly heterogeneous among countries and little information exists for China. To address this data gap, we investigated annual changes in preterm birth incidence rate and explored potential determinants of these changes in Shenzhen, China. Methods A total of 1.4 million live births, during 2003-2012, were included from the Shenzhen birth registry. Negative-binominal regression models were used to estimate the annual percent changes in incidence. To identify the potential determinants behind temporal trends, we estimated the contribution of each changing risk factor to changes in rate by calculating the difference in population-attributable risk fraction. Results Annual preterm birth incidence rates increased by 0.94% (95% CI 0.30%, 1.58%) overall, 3.60% (95% CI 2.73%, 4.48%) for medically induced, and 3.13% (95% CI 1.01%, 5.31%) for preterm premature rupture of membranes, but decreased by 2.34% (95% CI 1.62%, 3.06%) for spontaneous preterm labor. Higher maternal educational attainment (0.20 rate increase), lower proportion of inadequate prenatal care (0.15 rate reduction), more multipara (0.08 rate reduction), decreased proportion of preeclampsia or eclampsia (0.05 rate reduction), and larger proportion of young and older pregnant women (0.04 rate increase) were significant contributors to the overall change over time. Contributions of changing risk factors were different between preterm birth subtypes. Conclusions Preterm birth rate in Shenzhen, China increased overall during 2003-2012, although trends varied across three preterm birth subtypes. The rising rates were associated with changes in maternal education and age. |
| first_indexed | 2024-12-17T04:31:12Z |
| format | Article |
| id | doaj.art-3e3d63f3c5824def811bc3f2bf2ce8a0 |
| institution | Directory Open Access Journal |
| issn | 1742-4755 |
| language | English |
| last_indexed | 2024-12-17T04:31:12Z |
| publishDate | 2018-03-01 |
| publisher | BMC |
| record_format | Article |
| series | Reproductive Health |
| spelling | doaj.art-3e3d63f3c5824def811bc3f2bf2ce8a02022-12-21T22:03:32ZengBMCReproductive Health1742-47552018-03-0115111010.1186/s12978-018-0477-8Temporal trends of preterm birth in Shenzhen, China: a retrospective studyChangchang Li0Zhijiang Liang1Michael S. Bloom2Qiong Wang3Xiaoting Shen4Huanhuan Zhang5Suhan Wang6Weiqing Chen7Yan Lin8Qingguo Zhao9Cunrui Huang10Department of Health Policy and Management, School of Public Health, Sun Yat-sen UniversityDepartment of Public Health, Guangdong Women and Children HospitalDepartments of Environmental Health Sciences and Epidemiology and Biostatistics, University at Albany, State University of New YorkDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen UniversityCenter for Reproductive Medicine, The First Affiliated Hospital of Sun Yat-sen UniversityDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen UniversityDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen UniversityGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen UniversityDepartment of Children Health Care, Shenzhen Women and Children HospitalDepartment of Public Health, Guangdong Women and Children HospitalDepartment of Health Policy and Management, School of Public Health, Sun Yat-sen UniversityAbstract Background Preterm birth is the leading cause of child mortality under 5 years of age. Temporal trends in preterm birth rates are highly heterogeneous among countries and little information exists for China. To address this data gap, we investigated annual changes in preterm birth incidence rate and explored potential determinants of these changes in Shenzhen, China. Methods A total of 1.4 million live births, during 2003-2012, were included from the Shenzhen birth registry. Negative-binominal regression models were used to estimate the annual percent changes in incidence. To identify the potential determinants behind temporal trends, we estimated the contribution of each changing risk factor to changes in rate by calculating the difference in population-attributable risk fraction. Results Annual preterm birth incidence rates increased by 0.94% (95% CI 0.30%, 1.58%) overall, 3.60% (95% CI 2.73%, 4.48%) for medically induced, and 3.13% (95% CI 1.01%, 5.31%) for preterm premature rupture of membranes, but decreased by 2.34% (95% CI 1.62%, 3.06%) for spontaneous preterm labor. Higher maternal educational attainment (0.20 rate increase), lower proportion of inadequate prenatal care (0.15 rate reduction), more multipara (0.08 rate reduction), decreased proportion of preeclampsia or eclampsia (0.05 rate reduction), and larger proportion of young and older pregnant women (0.04 rate increase) were significant contributors to the overall change over time. Contributions of changing risk factors were different between preterm birth subtypes. Conclusions Preterm birth rate in Shenzhen, China increased overall during 2003-2012, although trends varied across three preterm birth subtypes. The rising rates were associated with changes in maternal education and age.http://link.springer.com/article/10.1186/s12978-018-0477-8Preterm birthIncidence rateTemporal trendMedically induced preterm birthSpontaneous preterm birthChina |
| spellingShingle | Changchang Li Zhijiang Liang Michael S. Bloom Qiong Wang Xiaoting Shen Huanhuan Zhang Suhan Wang Weiqing Chen Yan Lin Qingguo Zhao Cunrui Huang Temporal trends of preterm birth in Shenzhen, China: a retrospective study Reproductive Health Preterm birth Incidence rate Temporal trend Medically induced preterm birth Spontaneous preterm birth China |
| title | Temporal trends of preterm birth in Shenzhen, China: a retrospective study |
| title_full | Temporal trends of preterm birth in Shenzhen, China: a retrospective study |
| title_fullStr | Temporal trends of preterm birth in Shenzhen, China: a retrospective study |
| title_full_unstemmed | Temporal trends of preterm birth in Shenzhen, China: a retrospective study |
| title_short | Temporal trends of preterm birth in Shenzhen, China: a retrospective study |
| title_sort | temporal trends of preterm birth in shenzhen china a retrospective study |
| topic | Preterm birth Incidence rate Temporal trend Medically induced preterm birth Spontaneous preterm birth China |
| url | http://link.springer.com/article/10.1186/s12978-018-0477-8 |
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