Evidence map›Paper›PMID 35509104›Full record

Trial reportJournal of translational medicine2022

ICH-LR2S2: a new risk score for predicting stroke-associated pneumonia from spontaneous intracerebral hemorrhage.

Jing Yan, Weiqi Zhai, Zhaoxia Li, LingLing Ding, Jia You, Jiayi Zeng, Xin Yang, Chunjuan Wang, Xia Meng, Yong Jiang and 8 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of translational medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 pooled it
3.4field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 31 citations in OpenAlex.

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  15. Hydrogel applications: a promising frontier in pneumonia therapy.Frontiers in bioengineering and biotechnology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors at 5 institutions in 2 countries.

Jing Yan *Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Weiqi Zhai *Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China.
Zhaoxia LiVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
LingLing DingVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Jia YouInstitute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China.
Jiayi ZengInstitute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China.
Xin YangChina National Clinical Research Center for Neurological Diseases, Beijing, China.
Chunjuan WangVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Xia MengVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Yong JiangVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Xiaodi HuangSchool of Computing, Mathematics and Engineering, Charles Sturt University, Albury, NSW, 2640, Australia.
Shouyan WangInstitute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China.
Yilong WangVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Zixiao LiVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China. lizixiao2008@hotmai.com.
Shanfeng ZhuInstitute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China. zhusf@fudan.edu.cn.ORCID 0000-0002-6067-5312
Yongjun WangVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Xingquan ZhaoVascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China. zxq@vip.163.com.
Jianfeng FengInstitute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, 200433, China.
Capital Medical University · CNFudan University · CNCharles Sturt University · AUChinese Academy of Medical Sciences & Peking Union Medical College · CNNational Clinical Research Center for Digestive Diseases · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe develop a new risk score to predict patients with stroke-associated pneumonia (SAP) who have an acute intracranial hemorrhage (ICH).

methodWe applied logistic regression to develop a new risk score called ICH-LR2S2. It was derived from examining a dataset of 70,540 ICH patients between 2015 and 2018 from the Chinese Stroke Center Alliance (CSCA). During the training of ICH-LR2S2, patients were randomly divided into two groups - 80% for the training set and 20% for model validation. A prospective test set was developed using 12,523 patients recruited in 2019. To further verify its effectiveness, we tested ICH-LR2S2 on an external dataset of 24,860 patients from the China National Stroke Registration Management System II (CNSR II). The performance of ICH-LR2S2 was measured by the area under the receiver operating characteristic curve (AUROC).

resultsThe incidence of SAP in the dataset was 25.52%. A 24-point ICH-LR2S2 was developed from independent predictors, including age, modified Rankin Scale, fasting blood glucose, National Institutes of Health Stroke Scale admission score, Glasgow Coma Scale score, C-reactive protein, dysphagia, Chronic Obstructive Pulmonary Disease, and current smoking. The results showed that ICH-LR2S2 achieved an AUC = 0.749 [95% CI 0.739-0.759], which outperforms the best baseline ICH-APS (AUC = 0.704) [95% CI 0.694-0.714]. Compared with the previous ICH risk scores, ICH-LR2S2 incorporates fasting blood glucose and C-reactive protein, improving its discriminative ability. Machine learning methods such as XGboost (AUC = 0.772) [95% CI 0.762-0.782] can further improve our prediction performance. It also performed well when further validated by the external independent cohort of patients (n = 24,860), ICH-LR2S2 AUC = 0.784 [95% CI 0.774-0.794].

conclusionICH-LR2S2 accurately distinguishes SAP patients based on easily available clinical features. It can help identify high-risk patients in the early stages of diseases.

Indexed as

PneumoniaStrokeBlood GlucoseCerebral HemorrhageC-Reactive ProteinHumansIntracranial HemorrhagesPrognosisProspective StudiesRisk FactorsBlood GlucoseC-Reactive Protein

Identifiers

PMID35509104
PMCPMC9066782
OpenAlexW4225392210

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.