生活满意度指数A量表在自杀未遂研究中信效度分析  

Reliability and validity of Life Satisfaction Index A in study on attempted suicide among rural residents

作　　者：廉颖[1] 贾存显[2] 邱惠敏[3] 张吉玉[4] 

机构地区：[1]山东省千佛山医院,济南250014 [2]山东大学公共卫生学院流行病与卫生统计学研究所 [3]山东省精神卫生中心 [4]山东省疾病预防控制中心

出　　处：《中国公共卫生》2015年第8期1087-1091,共5页Chinese Journal of Public Health

基　　金：国家自然科学基金(30972527)

摘　　要：目的 评价生活满意度指数A量表（LSIA）在农村自杀未遂和正常对照人群中测量的信度和效度。方法 采用序贯抽样方法对山东省蓬莱、滕州、邹城、利津、莒南、宁阳6个县（市）的407例自杀未遂病例和按照性别、年龄、居住地匹配的409名正常对照人群进行问卷调查;采用Cronbach＇sα系数、相关系数评价量表的内部一致性信度,采用结构效度、效标效度和区分效度来评价量表的效度。结果 LSIA量表在自杀未遂组和正常对照组人群中的Cronbach＇sα系数分别为0.828和0.734,各条目得分与删除此条目后量表得分的相关系数分别为0.134～0.648和0.095～0.524（均P〈0.05）,量表的内部一致性较好;探索性因子分析表明,自杀未遂组提取出对生活的热情、决心与不屈服、愿望与已实现目标的统一、自我评价和心境5个公因子,累积方差解释率为52.89%,正常对照组提取出对生活的热情、决心与不屈服、愿望与已实现目标的统一、自我评价、心境和冷漠消极6个公因子,累积方差解释率为51.45%;LSIA、Beck绝望量表（BHS）、流调中心抑郁水平评定量表（CES-D）总分分别为（12.20±4.86）、（44.85±20.72）、（13.25±16.59）分,LSIA量表总分与BHS、CES-D量表总分均呈负相关（r=-0.720、-0.715,P〈0.001）,量表具有较好的效标效度;自杀未遂组LSIA量表总分为（9.39±4.59）分,低于正常对照组的（15.00±3.23）分,差异有统计学意义（t=20.20,P〈0.001）,量表具有较好的区分效度。结论 LSIA量表在农村自杀未遂研究中具有较好的信度和效度,但个别条目仍需调整。Objective To assess the reliability and validity of Life Satisfaction Index A （LSIA） in a case-control study on attempted suicide among rural residents. Methods A total of 407 attempted suicides happened from October 1,2009 to March 31,2011 were enrolled in the study. The control was matched with the same age（no more than 3 years）, gender and residenctial place as the attempted suicide. The reliability and validity of LSIA was evaluated by cal- culating Cronbach＇s alpha coefficient, correlation coefficient, construct validity, criterion-related validity, and discriminant validity. Results The Cronbach ct values were 0. 828 and 0. 734 in attempted suicides and living controls ,respectively. The item-total correlation coefficients,if the item was deleted from the scale, ranged from 0. 134 to 0. 648 （P 〈 0. 05 ） for the suicide group and 0. 095 to 0. 524 （P 〈 0. 05 ） for the control group. Exploratory factor analysis was carded out and 5 factors were yielded in attempted suicide group, including zest to life, resolution and fortitude, congruence between desired and achieved goals, and self-assessment and mood, with a cumulative contribution rate of 52. 89% of the total variance. And in the control group 6 factors were yielded, including zest to life, resolution and fortitude, congruence between de- sired and achieved goals, self-assessment, and mood and indifference, with a cumulative contribution rate of 51.45 % of the total variance. The total scores of LSIA, Beck Hopelessness Scale （BHS）, and Center for Epidemiologic Studies De- pression Scale（CES-D） were 12. 20 ± 4. 86,44. 85 ± 20. 72, and 13.25 ± 16. 59, respectively. Criterion validity analysis demonstrated a negative correlation among the scores of LSIA and BHS, CES-D （ r = - 0. 720, - 0. 715, P 〈 0. 001 for all）. The total score of LSIA in the attempted suicides was 9. 39 ±4. 59, while the score of LSIA in the controls was 15.00 ± 3.23, with a significant difference between the two groups （t = 20. 20, P 〈 0. 001 �

关 键 词：生活满意度指数A量表(LSIA) 自杀未遂 信度 效度 

分 类 号：R395[哲学宗教—心理学]