摘要
目的对精神创伤影响评定问卷（PTIQ）的结构效度、效标关联效度及判别效度进行分析。方法应激组138例，为近3个月内遭遇创伤性事件的当事人或其家属；心理健康对照组59例，为无精神疾病和严重躯体疾病史、未遭受过严重应激性事件者。对PTIQ经项目分析具有满意鉴别力的条目，采用主成分分析和最大方差转轴法进行问卷结构效度检验；采用Pearson积距相关法分析，分析PTIQ与效标量表相关性；比较应激组与对照组PTIQ各因子得分的差异，检验问卷判别效度。结果8个公共因素的特征值1．678～14．880，累积解释变异量为57．138％，各条目的共同度0．295～0．760。转轴后的成分矩阵结果。最终析出警觉与焦虑、生理功能障碍、抑郁、闯入、分离、回避、睡眠障碍、社会功能障碍8个因子。精神创伤影响评定问卷总分与SCL-90的9个因子均有显著的正相关，相关系数在0．441～0．745不等。问卷总分与IES—R总分及闯入、回避、警觉因子相关系数分别为0．854，0．829，0．726，0．754，均为显著正相关。问卷抑郁因子与HAMD得分相关系数为0．602（P〈0．05）。问卷警觉与焦虑因子与HAMA得分相关系数为0．663（P〈0．05）。应激组和对照组在PTIQ8个因子分上均有显著性差异。结论PTIQ具有良好的结构效度，与原问卷的理论维度基本吻合；同时具有满意的效标关联效度及判别效度。
Objective To explore construct validity, criterion-related validity and discrimination validity of Psychological Trauma Impact Questionnaire （PTIQ）. Methods 138 victims who experienced psychological traumatic events in 3 months and 59 healthy students took part in tests. PTIQ 77 items with good discrimination after item analysis, were analyzed through exploratory factor analytic approach including principal components analysis and Varimax rotation in order to test construct validity. Criterion-related validity was conduct by Pearson correlation between PTIQ and SCL-90, IES-R, HAMD and HAMA. Discrimination validity of PTIQ was done using independent-sample t test. Results Eigenvalues of 8 components are 1. 678 to 14. 880, and cumulative % of variance is 57. 138% ,and communalities range from 0.295 to 0. 760. Rotated component matrix extracts perfectly 62 items into factors including arousal and anxiety （ AA）, physiological dysfunction （ PD ）, depression （ D ）, Intrusive experiences （IE）, Dissociation （DIS）, Defensive avoidance （DA）, sleeping disorder （S） and social dysfunction （SD）. In addition, there is positive correlation between PTIQ total score and 9 factors of SCL-90 （ r = 0. 441 ～ 0.745 ）. PTIQ total score is significantly positively correlated to total score, intrusive experiences factor, defensive avoidance and hyper arousal factors of IES-R. Depression factor of PTIQ is significantly positively correlated to HAMD total score （ r= 0. 602, P〈 0.05 ）. Anxiety factor of PTIQ is significant positively correlated to HAMA total score also （ r= 0.663, P〈 0.05 ）. There are significant differences between the stressed victims and control healthy students in 8 factors scores of PTIQ. Conclusion Factor analysis proves that PTIQ has good construct validity, which is basically consistent with the theoretic dimensions of scale. Moreover, PTIQ is proven to be with satisfactory criterion-related validity and discrimination validity.
出处
《中国行为医学科学》
CSCD
2007年第7期659-661,共3页
Chinese Journal of Behavioral Medical Science
基金
广东省科技攻关计划项目（2003C33805）
关键词
精神创伤
问卷
结构效度
效标关联效度
Psychological Trauma
Questionnaire
Construct validity
Criterion-related validity
