Article(id=1322168282589810693, tenantId=1146029695717560320, journalId=1220038315760373764, issueId=1322167871413796899, articleNumber=null, orderNo=null, doi=10.12102/j.issn.1009-6493.2026.03.003, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1732636800000, receivedDateStr=2024-11-27, revisedDate=1762617600000, revisedDateStr=2025-11-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1793159083267, onlineDateStr=2026-10-28, pubDate=1770652800000, pubDateStr=2026-02-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793159083267, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793159083267, creator=13701087609, updateTime=1793159083267, updator=13701087609, issue=Issue{id=1322167871413796899, tenantId=1146029695717560320, journalId=1220038315760373764, year='2026', volume='40', issue='3', pageStart='353', pageEnd='528', issueExtLink='null', onlineDate='null', pubDate='1770652800000', pubDateStr='2026-02-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793158985236, creator='13701087609', updateTime=1793158985236, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=368, endPage=376, ext={EN=ArticleExt(id=1322168283000852486, articleId=1322168282589810693, tenantId=1146029695717560320, journalId=1220038315760373764, language=EN, title=Construction and validation of a risk prediction model for suicidal ideation in first-episode schizophrenia patients based on glucose metabolism disorders, columnId=1220689484526572183, journalTitle=Chinese Nursing Research, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Objective

To develop a risk prediction model for suicidal ideation in first-episode schizophrenia patients based on glucose metabolism disorders.

Methods

A total of 333 patients with schizophrenia were randomly divided into a training group(n=233) and a validation group(n=100) in a 7∶3 ratio.Positive and Negative Syndrome Scale(PANSS) were used to evaluate psychiatric symptoms.Depressive and cognitive factors were evaluated based on the five-factor model.Fasting blood glucose,glycated hemoglobin,and fasting insulin were collected.The insulin resistance index was calculated.Patients were categorized into groups with and without suicidal ideation by using the Beck Suicide Ideation Scale.In the training group,relevant variables were identified through LASSO and Logistic regression analysis.A Nomogram was constructed to predict the risk of suicidal ideation.The area under the ROC curve(AUC) was used to evaluate the predictive ability of the model.Calibration curve was used to evaluate accuracy.Decision curve analysis(DCA) was used to evaluate clinical practicality.

Results

A Nomogram was constructed based on positive symptoms scores,depressive factors scores,fasting blood glucose,and fasting insulin.The AUC of the training group and validation group were 0.776(95%CI 0.715-0.837) and 0.763(95%CI 0.665-0.860),respectively,indicating good discriminative ability of the model.Calibration analysis and DCA confirmed the clinical applicability of the nomogram.

Conclusions

The Nomogram constructed in this study for predicting the risk of suicidal ideation in patients with schizophrenia could help identify high-risk suicide patients in clinical practice,provide reference for timely implementation of prevention strategies,and reduce suicide risk.

, authors=Liyuan LING1, Xiao'e LANG2, Meixia WANG1, Weinan DU1, authorsList=Liyuan LING, Xiao'e LANG, Meixia WANG, Weinan DU, authorCompany=null, correspAuthors=Xiao'e LANG, authorNote=null, correspAuthorsNote=
LANG Xiao'e, E-mail:
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322168287652335649, articleId=1322168282589810693, tenantId=1146029695717560320, journalId=1220038315760373764, language=CN, title=首发精神分裂症病人基于糖代谢紊乱的自杀意念风险预测模型的构建与验证, columnId=1220689484681761433, journalTitle=护理研究, columnName=科研论著, runingTitle=null, highlight=null, articleAbstract=
目的

为首发未用药的精神分裂症病人开发基于糖代谢紊乱的自杀意念风险预测模型。

方法

纳入333例精神分裂症病人,以7∶3的比例随机分为训练组(n=233)和验证组(n=100)。通过阳性与阴性症状量表(PANSS)评估精神病性症状,并基于其五因子模型评估抑郁和认知因子。同时收集空腹血糖、糖化血红蛋白、空腹胰岛素,并计算胰岛素抵抗指数。使用贝克自杀意念量表将病人分为有自杀意念和无自杀意念。训练组中,通过LASSO和二元Logistic回归分析识别相关变量,并构建列线图预测自杀意念风险。使用受试者工作特征(ROC)曲线下面积(AUC)评估模型预测能力,校准曲线评估准确性,决策曲线分析(DCA)评估临床实用性。

结果

基于阳性症状得分、抑郁因子得分、空腹血糖和空腹胰岛素构建了列线图。训练组和验证组的AUC分别为0.776[95%CI(0.715,0.837)]和0.763[95%CI(0.665,0.860)],表明模型具有良好的判别能力,校准分析和DCA证实了列线图的临床适用性。

结论

构建的预测精神分裂症病人自杀意念风险列线图,有助于临床上识别高自杀风险病人,为及时实施预防策略,降低自杀风险提供参考。

, authors=凌丽媛1, 郎小娥2, *, *, 王美霞1, 杜伟楠1, authorsList=凌丽媛, 郎小娥, 王美霞, 杜伟楠, authorCompany=null, correspAuthors=郎小娥, authorNote=

凌丽媛,硕士研究生在读

, correspAuthorsNote=
郎小娥,E-mail:
LANG Xiao'e, E-mail:
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(注:*P<0.05;***P<0.001。P为阳性症状得分;G为一般精神病理症状得分;D为抑郁因子得分;IR为HOMA-IR)

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Comparison of general demographic information and glucose metabolism indicators between schizophrenia group and healthy control group

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类健康对照组(n=163)精神分裂症组(n=333)统计值P
年龄(年)25.00(20.00,33.00)24.00(17.00,32.00)Z=-1.890.058
受教育年限(年)12.00(10.00,15.00)12.00(9.00,15.00)Z=-1.690.092
BMI(kg/m2)21.51(20.03,23.48)22.28(19.72,25.02)Z=-1.800.071
FBG(mmol/L)4.97(4.70,5.32)5.18(4.95,5.45)Z=-4.46<0.001
HbA1c(%)5.29(5.06,5.60)5.32(5.08,5.56)Z=-0.460.646
FINS(μU/mL)8.49(6.24,10.82)10.90(7.32,15.13)Z=-5.69<0.001
HOMA-IR1.86(1.38,2.31)2.53(1.68,3.43)Z=-6.38<0.001
性别[例(%)]女74(45.40)182(54.65)χ²=3.750.053
男89(54.60)151(45.35)
吸烟史[例(%)]无139(85.28)269(80.78)χ²=1.520.218
有24(14.72)64(19.22)
饮酒史[例(%)]无157(96.32)312(93.69)χ²=1.470.226
有6(3.68)21(6.31)
), ArticleFig(id=1322529933667185044, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=CN, label=表1, caption=

精神分裂症组和健康对照组一般人口学资料和糖代谢指标比较

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类健康对照组(n=163)精神分裂症组(n=333)统计值P
年龄(年)25.00(20.00,33.00)24.00(17.00,32.00)Z=-1.890.058
受教育年限(年)12.00(10.00,15.00)12.00(9.00,15.00)Z=-1.690.092
BMI(kg/m2)21.51(20.03,23.48)22.28(19.72,25.02)Z=-1.800.071
FBG(mmol/L)4.97(4.70,5.32)5.18(4.95,5.45)Z=-4.46<0.001
HbA1c(%)5.29(5.06,5.60)5.32(5.08,5.56)Z=-0.460.646
FINS(μU/mL)8.49(6.24,10.82)10.90(7.32,15.13)Z=-5.69<0.001
HOMA-IR1.86(1.38,2.31)2.53(1.68,3.43)Z=-6.38<0.001
性别[例(%)]女74(45.40)182(54.65)χ²=3.750.053
男89(54.60)151(45.35)
吸烟史[例(%)]无139(85.28)269(80.78)χ²=1.520.218
有24(14.72)64(19.22)
饮酒史[例(%)]无157(96.32)312(93.69)χ²=1.470.226
有6(3.68)21(6.31)
), ArticleFig(id=1322529933751071125, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=EN, label=Table 2, caption=

Comparison of general demographic information and glucose metabolism indicators between the training group and the validation group

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类验证组(n=100)训练组(n=233)统计值P
年龄(年)23.00(17.00,33.00)24.00(17.00,32.00)Z=-0.180.857
受教育年限(年)12.00(9.00,15.00)12.00(9.00,15.00)Z=-0.070.948
BMI(kg/m2)22.63(19.74,25.52)22.27(19.72,24.89)Z=-0.740.462
病程(年)1.00(0.50,3.00)1.00(0.50,2.50)Z=-1.270.203
阳性症状得分(分)22.00(16.00,28.50)22.00(17.00,28.00)Z=-0.540.591
阴性症状得分(分)31.00(24.50,38.00)30.00(22.00,36.00)Z=-1.270.204
一般精神病理症状得分(分)53.50(44.50,65.00)54.00(46.00,64.00)Z=-0.210.832
PANSS总分(分)107.00(87.75,129.00)107.00(85.00,125.00)Z=-0.240.811
认知因子得分(分)14.00(9.00,17.00)13.00(8.00,16.00)Z=-1.110.268
抑郁因子得分(分)11.00(8.00,13.00)11.00(9.00,13.00)Z=-1.500.134
FBG(mmol/L)5.19(4.96,5.44)5.17(4.94,5.46)Z=-0.020.984
HbA1c(%)5.35(5.13,5.55)5.31(5.04,5.58)Z=-0.400.687
FINS(μU/mL)10.50(7.68,15.26)11.14(7.23,14.98)Z=-0.030.978
HOMA-IR2.42(1.72,3.19)2.56(1.62,3.52)Z=-0.120.902
性别[例(%)]女58(58.00)124(53.22)χ²=0.650.422
男42(42.00)109(46.78)
吸烟史[例(%)]无82(82.00)187(80.26)χ²=0.140.711
有18(18.00)46(19.74)
饮酒史[例(%)]无95(95.00)217(93.13)χ²=0.410.521
有5(5.00)16(6.87)
自杀意念[例(%)]无64(64.00)144(61.80)χ²=0.140.704
有36(36.00)89(38.20)
), ArticleFig(id=1322529933822374294, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=CN, label=表2, caption=

训练组和验证组一般人口学资料和糖代谢指标比较

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类验证组(n=100)训练组(n=233)统计值P
年龄(年)23.00(17.00,33.00)24.00(17.00,32.00)Z=-0.180.857
受教育年限(年)12.00(9.00,15.00)12.00(9.00,15.00)Z=-0.070.948
BMI(kg/m2)22.63(19.74,25.52)22.27(19.72,24.89)Z=-0.740.462
病程(年)1.00(0.50,3.00)1.00(0.50,2.50)Z=-1.270.203
阳性症状得分(分)22.00(16.00,28.50)22.00(17.00,28.00)Z=-0.540.591
阴性症状得分(分)31.00(24.50,38.00)30.00(22.00,36.00)Z=-1.270.204
一般精神病理症状得分(分)53.50(44.50,65.00)54.00(46.00,64.00)Z=-0.210.832
PANSS总分(分)107.00(87.75,129.00)107.00(85.00,125.00)Z=-0.240.811
认知因子得分(分)14.00(9.00,17.00)13.00(8.00,16.00)Z=-1.110.268
抑郁因子得分(分)11.00(8.00,13.00)11.00(9.00,13.00)Z=-1.500.134
FBG(mmol/L)5.19(4.96,5.44)5.17(4.94,5.46)Z=-0.020.984
HbA1c(%)5.35(5.13,5.55)5.31(5.04,5.58)Z=-0.400.687
FINS(μU/mL)10.50(7.68,15.26)11.14(7.23,14.98)Z=-0.030.978
HOMA-IR2.42(1.72,3.19)2.56(1.62,3.52)Z=-0.120.902
性别[例(%)]女58(58.00)124(53.22)χ²=0.650.422
男42(42.00)109(46.78)
吸烟史[例(%)]无82(82.00)187(80.26)χ²=0.140.711
有18(18.00)46(19.74)
饮酒史[例(%)]无95(95.00)217(93.13)χ²=0.410.521
有5(5.00)16(6.87)
自杀意念[例(%)]无64(64.00)144(61.80)χ²=0.140.704
有36(36.00)89(38.20)
), ArticleFig(id=1322529933923037591, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=EN, label=Table 3, caption=

Comparison of general demographic information and glucose metabolism indicators between the group without suicidal ideation and the group with suicidal ideation in patients with schizophrenia

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类无自杀意念组(n=144)有自杀意念组(n=89)统计值P
年龄(年)26.00(18.00,32.00)22.00(17.00,32.00)Z=-1.470.143
受教育年限(年)12.00(9.00,15.00)11.00(9.00,15.00)Z=-0.340.732
BMI(kg/m2)22.04(19.44 24.34)22.58(20.96,25.32)Z=-1.830.068
病程(年)1.00(0.50,2.75)1.00(0.50,2.50)Z=-0.280.780
阳性症状得分(分)21.50(17.00,27.00)23.00(17.00,30.00)Z=-2.050.040
阴性症状得分(分)30.00(23.00,36.00)29.00(20.00,35.00)Z=-0.700.482
一般精神病理症状得分(分)54.00(44.00,62.00)55.00(49.00,67.00)Z=-2.340.019
PANSS总分(分)103.00(85.00,121.00)111.00(91.00,130.00)Z=-1.570.117
认知因子得分(分)13.00(8.00,16.00)13.00(7.00,16.00)Z=-0.530.600
抑郁因子得分(分)11.00(8.00,12.00)12.00(10.00,14.00)Z=-4.49<0.001
FBG(mmol/L)5.13(4.88,5.39)5.27(5.05,5.56)Z=-3.450.001
FINS(μU/mL)9.67(6.60,13.09)12.85(10.74,18.13)Z=-4.66<0.001
HOMA-IR2.18(1.41,2.95)3.18(2.42,4.38)Z=-5.10<0.001
性别[例(%)]女79(54.86)45(50.56)χ²=0.410.523
男65(45.14)44(49.44)
吸烟史[例(%)]无115(79.86)72(80.90)χ²=0.040.847
有29(20.14)17(19.10)
饮酒史[例(%)]无134(93.06)83(93.26)χ²=0.000.953
有10(6.94)6(6.74)
), ArticleFig(id=1322529933994340760, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=CN, label=表3, caption=

精神分裂症病人无自杀意念组和有自杀意念组一般人口学信息和糖代谢指标比较

, figureFileSmall=null, figureFileBig=null, tableContent=
项目分类无自杀意念组(n=144)有自杀意念组(n=89)统计值P
年龄(年)26.00(18.00,32.00)22.00(17.00,32.00)Z=-1.470.143
受教育年限(年)12.00(9.00,15.00)11.00(9.00,15.00)Z=-0.340.732
BMI(kg/m2)22.04(19.44 24.34)22.58(20.96,25.32)Z=-1.830.068
病程(年)1.00(0.50,2.75)1.00(0.50,2.50)Z=-0.280.780
阳性症状得分(分)21.50(17.00,27.00)23.00(17.00,30.00)Z=-2.050.040
阴性症状得分(分)30.00(23.00,36.00)29.00(20.00,35.00)Z=-0.700.482
一般精神病理症状得分(分)54.00(44.00,62.00)55.00(49.00,67.00)Z=-2.340.019
PANSS总分(分)103.00(85.00,121.00)111.00(91.00,130.00)Z=-1.570.117
认知因子得分(分)13.00(8.00,16.00)13.00(7.00,16.00)Z=-0.530.600
抑郁因子得分(分)11.00(8.00,12.00)12.00(10.00,14.00)Z=-4.49<0.001
FBG(mmol/L)5.13(4.88,5.39)5.27(5.05,5.56)Z=-3.450.001
FINS(μU/mL)9.67(6.60,13.09)12.85(10.74,18.13)Z=-4.66<0.001
HOMA-IR2.18(1.41,2.95)3.18(2.42,4.38)Z=-5.10<0.001
性别[例(%)]女79(54.86)45(50.56)χ²=0.410.523
男65(45.14)44(49.44)
吸烟史[例(%)]无115(79.86)72(80.90)χ²=0.040.847
有29(20.14)17(19.10)
饮酒史[例(%)]无134(93.06)83(93.26)χ²=0.000.953
有10(6.94)6(6.74)
), ArticleFig(id=1322529934074032537, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=EN, label=Table 4, caption=

Univariate Logistic regression analysis of factors influencing suicidal ideation in patients with schizophrenia

, figureFileSmall=null, figureFileBig=null, tableContent=
变量回归系数标准误Z值POR值95%CI
阳性症状得分0.0430.0192.3000.0211.044[1.007,1.084]
一般精神病理症状得分0.0290.0122.4290.0151.029[1.006,1.054]
抑郁因子得分0.2310.0524.444<0.0011.260[1.142,1.400]
FBG1.1470.3293.486<0.0013.149[1.715,6.239]
FINS0.0780.0213.726<0.0011.081[1.039,1.129]
HOMA-IR0.3630.0914.001<0.0011.437[1.213,1.733]
), ArticleFig(id=1322529934157918618, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=CN, label=表4, caption=

精神分裂症病人自杀意念影响因素的单因素Logistic回归分析

, figureFileSmall=null, figureFileBig=null, tableContent=
变量回归系数标准误Z值POR值95%CI
阳性症状得分0.0430.0192.3000.0211.044[1.007,1.084]
一般精神病理症状得分0.0290.0122.4290.0151.029[1.006,1.054]
抑郁因子得分0.2310.0524.444<0.0011.260[1.142,1.400]
FBG1.1470.3293.486<0.0013.149[1.715,6.239]
FINS0.0780.0213.726<0.0011.081[1.039,1.129]
HOMA-IR0.3630.0914.001<0.0011.437[1.213,1.733]
), ArticleFig(id=1322529934250193307, tenantId=1146029695717560320, journalId=1220038315760373764, articleId=1322168282589810693, language=EN, label=Table 5, caption=

LASSO regression independent variable retention coefficient

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变量最小均方误差系数
截距-10.324
阳性症状得分0.046
一般精神病理症状得分0.001
抑郁因子得分0.223
FBG1.054
FINS0.054
HOMA-IR0.000
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LASSO回归自变量保留系数

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变量最小均方误差系数
截距-10.324
阳性症状得分0.046
一般精神病理症状得分0.001
抑郁因子得分0.223
FBG1.054
FINS0.054
HOMA-IR0.000
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首发精神分裂症病人基于糖代谢紊乱的自杀意念风险预测模型的构建与验证
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凌丽媛 1 , 郎小娥 2, *, * , 王美霞 1 , 杜伟楠 1
护理研究 | 科研论著 2026,40(3): 368-376
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护理研究 |科研论著 2026 , 40 (3) : 368 -376
首发精神分裂症病人基于糖代谢紊乱的自杀意念风险预测模型的构建与验证
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凌丽媛1, 郎小娥2, *, * , 王美霞1, 杜伟楠1
作者信息
  • 1山西医科大学第一临床医学院,山西 030001
  • 2山西医科大学第一医院
通讯作者:
郎小娥,E-mail:
LANG Xiao'e, E-mail:
作者简介:

凌丽媛,硕士研究生在读

Construction and validation of a risk prediction model for suicidal ideation in first-episode schizophrenia patients based on glucose metabolism disorders
Liyuan LING1, Xiao'e LANG2 , Meixia WANG1, Weinan DU1
Affiliations
  • 1The First Clinical College of Medicine, Shanxi Medical University, Shanxi 030001 China
  • 2First Hospital of Shanxi Medical University
  • Corresponding Author:
    LANG Xiao'e, E-mail:
出版时间: 2026-02-10 doi: 10.12102/j.issn.1009-6493.2026.03.003
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目的

为首发未用药的精神分裂症病人开发基于糖代谢紊乱的自杀意念风险预测模型。

方法

纳入333例精神分裂症病人,以7∶3的比例随机分为训练组(n=233)和验证组(n=100)。通过阳性与阴性症状量表(PANSS)评估精神病性症状,并基于其五因子模型评估抑郁和认知因子。同时收集空腹血糖、糖化血红蛋白、空腹胰岛素,并计算胰岛素抵抗指数。使用贝克自杀意念量表将病人分为有自杀意念和无自杀意念。训练组中,通过LASSO和二元Logistic回归分析识别相关变量,并构建列线图预测自杀意念风险。使用受试者工作特征(ROC)曲线下面积(AUC)评估模型预测能力,校准曲线评估准确性,决策曲线分析(DCA)评估临床实用性。

结果

基于阳性症状得分、抑郁因子得分、空腹血糖和空腹胰岛素构建了列线图。训练组和验证组的AUC分别为0.776[95%CI(0.715,0.837)]和0.763[95%CI(0.665,0.860)],表明模型具有良好的判别能力,校准分析和DCA证实了列线图的临床适用性。

结论

构建的预测精神分裂症病人自杀意念风险列线图,有助于临床上识别高自杀风险病人,为及时实施预防策略,降低自杀风险提供参考。

精神分裂症  /  自杀意念  /  糖代谢紊乱  /  影响因素  /  列线图  /  风险预测
Objective

To develop a risk prediction model for suicidal ideation in first-episode schizophrenia patients based on glucose metabolism disorders.

Methods

A total of 333 patients with schizophrenia were randomly divided into a training group(n=233) and a validation group(n=100) in a 7∶3 ratio.Positive and Negative Syndrome Scale(PANSS) were used to evaluate psychiatric symptoms.Depressive and cognitive factors were evaluated based on the five-factor model.Fasting blood glucose,glycated hemoglobin,and fasting insulin were collected.The insulin resistance index was calculated.Patients were categorized into groups with and without suicidal ideation by using the Beck Suicide Ideation Scale.In the training group,relevant variables were identified through LASSO and Logistic regression analysis.A Nomogram was constructed to predict the risk of suicidal ideation.The area under the ROC curve(AUC) was used to evaluate the predictive ability of the model.Calibration curve was used to evaluate accuracy.Decision curve analysis(DCA) was used to evaluate clinical practicality.

Results

A Nomogram was constructed based on positive symptoms scores,depressive factors scores,fasting blood glucose,and fasting insulin.The AUC of the training group and validation group were 0.776(95%CI 0.715-0.837) and 0.763(95%CI 0.665-0.860),respectively,indicating good discriminative ability of the model.Calibration analysis and DCA confirmed the clinical applicability of the nomogram.

Conclusions

The Nomogram constructed in this study for predicting the risk of suicidal ideation in patients with schizophrenia could help identify high-risk suicide patients in clinical practice,provide reference for timely implementation of prevention strategies,and reduce suicide risk.

schizophrenia  /  suicidal ideation  /  glucose metabolism disorder  /  influencing factors  /  Nomogram  /  risk prediction
凌丽媛, 郎小娥, 王美霞, 杜伟楠. 首发精神分裂症病人基于糖代谢紊乱的自杀意念风险预测模型的构建与验证. 护理研究, 2026 , 40 (3) : 368 -376 . DOI: 10.12102/j.issn.1009-6493.2026.03.003
Liyuan LING, Xiao'e LANG, Meixia WANG, Weinan DU. Construction and validation of a risk prediction model for suicidal ideation in first-episode schizophrenia patients based on glucose metabolism disorders[J]. Chinese Nursing Research, 2026 , 40 (3) : 368 -376 . DOI: 10.12102/j.issn.1009-6493.2026.03.003
精神分裂症与高自杀风险紧密相关[1-3],病人终生自杀风险为4.9%[4],自杀意念发生率更是高达34.5%[1]。自杀风险评估覆盖从自杀意念到行为实施的全过程[5-6],其中自杀意念是预测未来自杀行为的关键因素[7],对制定预防策略至关重要[8]。因此,识别和预防自杀意念对于降低精神分裂症病人的自杀率和改善生活质量具有重大意义[9]。 研究发现,精神分裂症病人早期即存在糖代谢异常[10],且糖代谢紊乱与自杀行为之间存在关联[11]。不同国家的研究发现,糖尿病病人的自杀行为发生率高于普通人群[12-13],在首发未用药的精神分裂症病人中,表现出自杀行为者的空腹血糖、空腹胰岛素水平以及胰岛素抵抗指数均显著升高[14]。此外,研究报道,抗精神病药物的使用可能增高病人发展为2型糖尿病的风险[15-16]。针对精神分裂症病人自杀意念的高风险和可能的发生率低估问题,本研究旨在构建糖代谢紊乱介导的自杀意念风险预测模型,利用其高可靠性[17-18],特别关注首发未用药精神分裂症病人群体,以期更准确地评估自杀风险,并指导临床决策。
招募山西医科大学第一医院精神科的333例首发未用药精神分裂症病人。病人纳入标准:1)符合美国精神障碍诊断与统计手册第5版(DSM-5)中精神分裂症的诊断标准;2)年龄13~60岁;3)病程不超过5年;4)之前未接受过任何抗精神病药物或特定药物治疗。将333例首发未用药精神分裂症病人以7∶3的比例随机分为训练组(n=233)和验证组(n=100)。并招募了163名与入组病人性别和年龄相匹配的健康对照者,排除有个人或家族精神病史的健康人群。所有参与者排除标准:1)患有严重的身体疾病,如癌症、心血管疾病和自身免疫性疾病(不包括糖尿病);2)患有影响中枢神经系统或智力障碍的疾病;3)有药物或乙醇滥用史,不包括尼古丁。本研究已通过山西医科大学第一医院伦理委员会审核(编号:K-K0143)。
收集研究对象的年龄、性别、身高、体重、受教育年限、吸烟史、饮酒史、病程,计算体质指数(BMI)。
由2名经过一致性培训的主治医师以上职称的精神科医生对333例精神分裂症病人进行量表评估。
采用PANSS评估精神分裂症病人的精神病理症状[19],原始的PANSS包括阳性症状、阴性症状和一般精神病理症状3个子量表[19]。认知因子由联想散漫(P2)、抽象思维困难(N5)和注意障碍(G11)3个PANSS项组成,抑郁因子包括焦虑(G2)、自罪感(G3)和抑郁(G6)其他3个PANSS项目。近年来,基于因子分析提出了PANSS五因子模型[20-21]。
采用BSI-CV评估精神分裂症病人的自杀意念。根据BSI-CV的第4项(表示主动自杀意图)和第5项(表示被动自杀意图)得分对精神分裂症病人进行分类,将其分为有自杀意念组和无自杀意念组。在第4项或第5项上得分被分类为“弱”或“中等到强”表示存在自杀意念。相反,第4项和第5项的得分均为“无”则表明病人没有表现出自杀意念。
采集参与者的空腹静脉血液样本。使用日本日立公司制造的HITACHI 7600全自动生化分析仪和上海科华公司的葡萄糖测定试剂盒测量空腹血糖(FBG);使用德国罗氏诊断公司的Cobas501及其试剂盒测定糖化血红蛋白(HbA1c);使用罗氏诊断公司的Cobas 6000和相应的试剂盒测定空腹胰岛素(FINS);采用稳态模型评估胰岛素抵抗指数(HOMA-IR),计算公式为HOMA-IR=(FBG×FINS)/22.5。
采用SPSS 25.0软件进行初步差异比较,采用R Studio 4.4.0软件进行高级统计分析和模型构建。定性资料采用例数、百分比(%)表示,组间比较采用χ2检验。符合正态分布的定量资料以均数±标准差(x±s)表示,组间比较采用t检验。不符合正态分布的定量资料以中位数(四分位数)[M(P25,P75)]表示,组间比较采用Mann-Whitney秩和检验。在训练组中,根据单因素Logistic回归分析中有统计学意义的变量绘制相关性热图,探索自变量之间的相关性,并利用LASSO特征选择算法对这些变量进行特征选择,剔除存在共线性或者冗余的自变量,随后进行多因素Logistic回归分析,以识别首发未用药精神分裂症病人自杀意念的影响因素,并采用列线图进一步可视化这些影响因素。构建受试者工作特征(ROC)曲线和校正曲线,以评估列线图模型在训练组中的区分度和校准度,在验证组验证模型的性能。最后,使用rmda包进行了决策曲线分析(DCA),以评估模型的临床实用性。以P<0.05为有统计学意义。
精神分裂症病人与健康对照组性别、年龄、受教育年限、BMI、HbA1c、吸烟史、饮酒史比较,差异无统计学意义(P>0.05)。与健康对照组比较,精神分裂症病人的FBG、FINS、HOMA-IR值较高(P<0.05)。详见表1。
333例首发未用药精神分裂症病人中125例病人(37.54%)有自杀意念。训练组和验证组中自杀意念的发生率分别为38.20%(89/233)和36.00%(36/100)。两组一般人口学资料和糖代谢指标比较,差异均无统计学意义(P>0.05)。详见表2。
将训练组精神分裂症病人分为有自杀意念组和无自杀意念组。两组阳性症状得分、一般精神病理症状得分、抑郁因子得分、FBG、FINS、HOMA-IR差异有统计学意义(P<0.05)。详见表3。
以是否有自杀意念作为因变量,将表3中有统计学意义的变量进行单因素Logistic回归分析(自变量阳性症状得分、一般精神病理症状得分、抑郁因子得分、FBG、FINS、HOMA-IR均以原值输入)。结果显示,阳性症状得分(OR=1.044,P=0.021)、一般精神病理症状得分(OR=1.029,P=0.015)、抑郁因子得分(OR=1.260,P<0.001)、FBG(OR=3.149,P<0.001)、FINS(OR=1.081,P<0.001)、HOMA-IR(OR=1.437,P<0.001)与精神分裂症病人自杀意念有关。详见表4。
自变量相关性热图显示,FINS与HOMA-IR(IR)之间的相关系数为0.98(P<0.001),表明2个变量之间存在强烈的正相关关系,详见图1。这种高相关性可能导致回归分析中的共线性问题,导致模型估计不稳定和标准误差膨胀。因此,使用LASSO回归选择最具预测力的变量,当保留5个特征时,模型的均方误差最小,HOMA-IR(IR)的系数为零,表明IR被排除,而其他变量被保留。详见图1~3、表5。
以是否有自杀意念(有自杀意念=1,无自杀意念=0)为因变量,阳性症状得分、一般精神病理症状得分、抑郁因子得分、FBG、FINS为自变量,进行多因素Logistic回归分析。结果表明,包括阳性症状得分、抑郁因子得分、FBG和FINS 4个因子进入模型,阳性症状得分越高、抑郁因子得分越高、FBG水平越高、FINS水平越高,精神分裂症病人自杀意念的发生风险越高。详见图4。
训练组中,列线图预测自杀意念的AUC为0.776[95%CI(0.715,0.837)],最佳截断值为0.338,特异度为0.674,敏感度为0.798。相同的截断值0.338应用于验证组时,特异度为0.719,敏感度为0.667。验证组中,风险预测模型的AUC为0.763[95%CI(0.665,0.860)],表明模型有良好的鉴别能力。详见图6、图7。
此外,在训练组(χ2=5.604,ν=8,P=0.692)和验证组(χ2=5.174,ν=8,P=0.739)中的校准曲线结果显示,训练组与验证组中自杀意念预测概率与实际发生自杀意念之间差异均无统计学意义(P<0.05),表明模型校准能力较高,详见图8、图9。
此外,DCA结果表明,该列线图能够为有自杀意念的病人提供显著的净收益。这些收益在训练组的风险阈值概率为10%~89%,验证组为10%~65%,详见图10、图11。
本研究结果显示,333例精神分裂症病人中自杀意念发生率为37.54%,这一数据与全球精神分裂症病人自杀意念的终身发生率相近[34.5%,95%CI(28.2%,40.9%)][1]。多因素Logistic回归分析显示,阳性症状得分和抑郁因子得分是影响精神分裂症病人自杀意念的独立因素。阳性症状和抑郁因子评分较高的病人更易产生自杀意念,这与Dai等[22-24]研究结果一致,其指出伴有严重阳性症状和抑郁症状的精神分裂症病人常有自杀意念。病人经常遭受幻觉、妄想和思维混乱等阳性症状的困扰,这些症状不仅影响病人的认知功能和情绪状态,还可能增加他们对生活的绝望感,从而诱发自杀意念。此外,这些阳性症状常使病人感到无助和孤独,进一步增加了自杀风险[25]。同时,抑郁症状的存在会加剧病人的痛苦和绝望感,提高自杀的可能性。研究表明,在精神分裂症病人中,合并抑郁症的病人自杀风险更高[26]。本研究结果还显示,FBG、FINS水平是精神分裂症病人自杀意念的独立影响因素,伴有自杀意念的精神分裂症病人比没有自杀意念的病人表现出更高的FBG和FINS水平,这与Koponen等[27-29]研究结果一致。葡萄糖对脑细胞功能至关重要,影响自我控制和情绪调节[30]。高血糖可能反映细胞对葡萄糖的摄取能力下降,导致脑细胞内葡萄糖不足[31]。这种不足可能导致情绪问题,如攻击性、悲观和冲动性,与自杀风险增加有关[32]。
本研究构建并验证了首发未用药精神分裂症病人自杀意念风险列线图模型,可有效预测首发未用药精神分裂症病人的自杀意念风险。该风险模型在训练组和验证组中均表现出良好的预测能力,为临床评估自杀风险提供了工具。专业人员可以据此快速识别高风险病人并采取预防措施,有望改善精神分裂症病人的自杀预防和管理。
本研究存在一定的局限性,数据源自单一中心且采用回顾性设计,限制了确立因果关系的能力。未来应开展多中心研究,以增强研究结果的普遍适用性和外部有效性。此外,本研究构建的列线图虽经过内部验证,但仍需通过大样本、多中心的外部验证,以进一步评估其适用性和准确性。

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2026年第40卷第3期
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doi: 10.12102/j.issn.1009-6493.2026.03.003
  • 接收时间:2024-11-27
  • 首发时间:2026-10-28
  • 出版时间:2026-02-10
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  • 收稿日期:2024-11-27
  • 修回日期:2025-11-09
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    1山西医科大学第一临床医学院,山西 030001
    2山西医科大学第一医院

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郎小娥,E-mail:
LANG Xiao'e, E-mail:
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2种不同金属材料的力学参数
科
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属数
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genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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