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Validation of Impact of Events Scale in nurses under threat of contagion by severe acute respiratory syndrome
Author(s) -
CHEN CHENGSHENG,
YANG PINCHEN,
YEN CHENGFANG,
WU HSIUYUEH
Publication year - 2005
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.2005.01347.x
Subject(s) - cronbach's alpha , convergent validity , construct validity , scale (ratio) , psychology , sample (material) , clinical psychology , internal consistency , checklist , distress , variance (accounting) , medicine , psychometrics , chemistry , physics , business , accounting , chromatography , quantum mechanics , cognitive psychology
The purpose of the present study was to validate the Impact of Events Scale (IES) in a sample of nurses working under threat of severe acute respiratory syndrome (SARS). The internal consistency, construct validity and convergent validity of the instrument were examined in a sample of 128 nurses during the SARS outbreak in Taiwan. Principal component analysis followed by a quartimax rotation were used to derive a two‐factor solution, labeled intrusion (factor 1) and avoidance (factor 2), with both factors accounting for 50.7% of the explained variance. The total Cronbach's α of 0.90 reflected the good internal consistency of the instrument. Correlation with the Symptoms Checklist 90‐R demonstrated the convergent validity of the IES. In conclusion, the IES can be used as a convenient, reliable and valid instrument for evaluation of the psychological distress of nurses working with the highly contagious disease.