摘要
目的评价患者健康问卷抑郁量表(PHQ-9)和广泛性焦虑量表(GAD-7)两种量表在企业员工抑郁和焦虑测量中的有效性。方法采用分层随机抽样方法,在某企业各部门(岗位)抽取1117名员工作为研究对象,采用项目反应理论(item response theory,IRT)中的等级反应模型开展条目分析,评估量表单维性和模型拟合度以及各个条目的区分度、难度系数和信息量,并开展项目功能差异分析。结果研究对象中45岁以下员工661人(59.2%),45岁及以上员工456人(40.8%);男性802人(71.8%),女性315人(28.2%)。PHQ-9和GAD-7的Cronbach′sα系数为0.923和0.951,分半信度系数为0.863和0.940。PHQ-9和GAD-7第一特征根与第二特征根比值均>3,符合单维性假设。PHQ-9各条目的区分度为2.362~3.618,难度系数为-0.949~2.639,平均信息量范围为0.772~1.935;GAD-7各条目的区分度为3.631~5.580,难度系数为-0.469~2.044,平均信息量范围为1.880~3.547。结论PHQ-9和GAD-7可以作为评估企业员工抑郁症和广泛性焦虑症的测量工具。
Objective To evaluate the validity of the Patient Health Questionnaire(PHQ-9)and the Generalized Anxiety Disorder Scale(GAD-7)in measuring depression and anxiety among employees.Methods A stratified random sample of 1117 employees from various departments of an enterprise was included in the study.The item analysis was performed using the Grade Response Model in IRT to assess the dimensionality,discrimination,difficulty coefficient and average information of each item.The model fit and differential item functioning were also assessed.Results The study population consisted of 661(59.2%)employees under the age of 45 and 456(40.8%)employees aged 45 and above;802(71.8%)were male and 315(28.2%)were female.The Cronbach'sαcoefficients for the PHQ-9 and GAD-7 were 0.923 and 0.951,and the split-half reliability coefficients were 0.863 and 0.940.The ratio of the first characteristic root to the second characteristic root of both the PHQ-9 and GAD-7 scales was>3,in line with the hypothesis of unidimensionality.The discrimination of the PHQ-9 items ranged from 2.362 to 3.618,the difficulty coefficient from-0.949 to 2.639,and the average information from 0.772 to 1.935.The discrimination of the GAD-7 items ranged from 3.631 to 5.580,the difficulty coefficient from-0.469 to 2.044,and the average information from 1.880 to 3.547.Differential item functioning indicated that age and gender did not influence the screening of the two scales.Conclusion The PHQ-9 and GAD-7 scales can be used as psychometric tools to assess depression and generalized anxiety disorder in corporate employees.
作者
周费翔
刘婧
刘泽民
刘霞
常灿燕
颜艳
Zhou Feixiang;Liu Jing;Liu Zemin(Xiangya School of Public Health,Central South University(410013),Changsha)
出处
《中国卫生统计》
CSCD
北大核心
2024年第3期349-353,共5页
Chinese Journal of Health Statistics
关键词
项目反应理论
抑郁
焦虑
量表
功能差异分析
Item response theory
Depression
Anxiety
Scale
Differential item functioning
