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  1. 5161

    Development and validation of an improved prediction model for vaginal birth after previous cesarean section: a retrospective cohort study of a Chinese population by Haiyan Liu, Yi Yu, Xiaoyue Zhang, Jiangnan Pei, Yao Tang, Rong Hu, Weirong Gu

    Published 2025-12-01
    “…Internal validation performed by bootstrap resampling, calibration curves, and Hosmer-Lemeshow test confirmed the model’s robust performance. An optimal predicted probability cut-off of 0.7 was identified by decision curve analysis and clinical considerations.Conclusions The improved predictive VBAC model exhibited adequate performance such that women with a prior low transverse cesarean delivery who scored 0.7 or higher (in the model-derived probability score) would consider TOLAC, potentially leading to a reduction in maternal-neonatal morbidity.Registration The study was approved by the Ethical Committee of Obstetrics and Gynecology Hospital, Fudan University (2018-43) and was registered in the Chinese Clinical Trial Registry (ChiCTR1900022484), https://www.chictr.org.cn/showproj.html?…”
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  20. 5180

    Understanding summertime H<sub>2</sub>O<sub>2</sub> chemistry in the North China Plain through observations and modeling studies by C. Ye, P. Liu, C. Xue, C. Zhang, Z. Ma, C. Liu, J. Liu, K. Lu, Y. Mu, Y. Zhang

    Published 2025-07-01
    “…<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M30" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msub><mi mathvariant="normal">H</mi><mn mathvariant="normal">2</mn></msub><msub><mi mathvariant="normal">O</mi><mn mathvariant="normal">2</mn></msub><mspace linebreak="nobreak" width="0.125em"/><mo>/</mo><mspace width="0.125em" linebreak="nobreak"/><msub><mi mathvariant="normal">NO</mi><mi>z</mi></msub></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="a9182d24475047cf51b4132e8d78eed3"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-25-6991-2025-ie00002.svg" width="58pt" height="14pt" src="acp-25-6991-2025-ie00002.png"/></svg:svg></span></span> ratios (<span class="inline-formula"><i>&gt;</i>0.15</span> in 82 % of cases) indicated that O<span class="inline-formula"><sub>3</sub></span> formation was in a transition and NO<span class="inline-formula"><sub><i>x</i></sub></span>-sensitive regime, emphasizing the need for further volatile organic compound (VOC) and NO<span class="inline-formula"><sub><i>x</i></sub></span> reductions to mitigate both H<span class="inline-formula"><sub>2</sub></span>O<span class="inline-formula"><sub>2</sub></span> and O<span class="inline-formula"><sub>3</sub></span> pollution. …”
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