関連する実験動画
Updated: Jul 9, 2026

04:57
Establishing a Competing Risk Regression Nomogram Model for Survival Data
Published on: October 23, 2020
子供における大火傷による死亡率の予測
Marcus Spies1, David N Herndon, Judah I Rosenblatt
1Shriners Hospitals for Children and Department of Surgery, The University of Texas Medical Branch, Galveston, TX 77550, USA.
Lancet (London, England)
|March 28, 2003
まとめ
大規模な小児性火傷における死亡率の正確な予測には,最初の人口統計を超えた包括的なデータが必要です. 臨床的変数を統合した検証されたモデルは,重度の火傷児の結果を予測する 97% の正確性を達成しました.
科学分野:
- 小児重症治療薬は,小児重症治療薬として使用されています.
- 灼傷による傷害の研究
- 重度のトラウマにおける予後モデリング
背景:
- 大規模な小児性火傷 (>80%の全体表面積 [TBSA]) の生存に関する予測モデルが以前開発されていた.
- 初期モデルは,病院の経過から人口統計学的および臨床的変数を組み込みました.
- この研究は,このモデルの予測精度を将来的に検証することを目的とした.
研究 の 目的:
- 大量の火傷を負った小児患者の生存率を予測するための以前に開発されたモデルを将来的に検証する.
- 総合的な臨床モデルと対照的に,人口統計データのみを用いた結果予測の正確性を評価する.
主な方法:
- >80%のTBSAの灼傷を有する33人の小児の灼傷患者の将来的な検証.
- 収集されたデータには,年齢,火傷の大きさ,吸入による傷害,蘇生状態,および様々な実験室/臨床パラメータが含まれていました.
- これらの変数は,以前に開発された予測モデルに入力されました.
主要な成果:
- この研究では,33人の子ども (20人の男性,13人の女性) が対象となり,平均年齢は7.6歳,TBSAの火傷は88%であった.
- 全体的な死亡率は39.4% (30人中13人) でした.
- 総合モデルは97%の精度で結果を予測し,人口統計モデルでは51%の精度で結果を予測した.
結論:
- 重度な火傷を負った子供の死亡率は,火傷センターの設定で信頼性のある見積もりをすることができます.
- 人口統計と怪我の特徴だけでは,信頼性の高い結果予測には不十分です.
- 重度の火傷を負った子供は,治療の無益性に関する決定が考慮される前に治療を受けなければなりません.
関連する概念動画
Probability Laws
Overview
Determination of Expected Frequency
Suppose one wants to test independence between the two variables of a contingency table. The values in the table constitute the observed frequencies of the dataset. But how does one determine the expected frequency of the dataset? One of the important assumptions is that the two variables are independent, which means the variables do not influence each other. For independent variables, the statistical probability of any event involving both variables is calculated by multiplying the individual...
Burn Injuries
Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
Relative Risk
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
Hazard Rate
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
Hazard Ratio
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial evaluating a...
For example, in a clinical trial evaluating a...

