用于调整总的公式的推导和比较
Maria Phylactou1,2, Alexander N Comninos1,2, Ahmed Salih1
1Section of Endocrinology and Investigative Medicine, Imperial College London, London, United Kingdom.
Frontiers in endocrinology
|May 30, 2023
概括
从总 (TCa) 和其他参数中估计电离 (Ca2+) 的新公式显示,与传统的白蛋白调整计算相比,其准确性有所提高. 这种新的方法提高了生物活性水平在临床实践中的反映.
科学领域:
- 生物化学 生物化学
- 临床化学 临床化学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 自由电离 (Ca2+) 是总 (TCa) 的生物活性形式.
- 目前的方法调整TCa对白蛋白,使用各种公式来估计Ca2+.
- 既定公式可能并不总是准确地反映Ca2+水平.
研究的目的:
- 推导和验证一个用于估计Ca2+的新公式.
- 将新配方的性能与现有的调整配方进行比较.
- 评估不同配方对甲状腺前激素 (PTH) 水平的预测准确度.
主要方法:
- 通过多变量线性回归,从2806个血清样本中的TCA,,白蛋白和血红素中推导出估计Ca2+的新公式.
- 在预测PTH方面,新型和现有公式的性能在5510名患者中使用斯皮尔曼相关性来评估.
主要成果:
- 结合TCA,,白蛋白和血红素的新衍生配方实现了0.327的r2预测Ca2+,超过了已有的白蛋白调整配方 (例如,詹姆斯,r2=0.27).
- 包括所有可用的参数进一步改善了Ca2+ (r2=0.364) 的预测.
- 詹姆斯公式显示了PTH预测的最高斯皮尔曼相关系数 (+0.496),与使用所有参数 (+0.499) 相比.
结论:
- 标准的白蛋白调整配方在反映Ca2+方面并不总是优于未调整的TCa.
- 需要进一步的研究来优化TCA调整,并确定其有效性.
- 与现有方法相比,新型公式提供了更准确的对电离的估计.
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