TY - JOUR
T1 - Test-retest reliability and validity of the Pittsburgh Sleep Quality Index in primary insomnia
AU - Backhaus, Jutta
AU - Junghanns, Klaus
AU - Broocks, Andreas
AU - Riemann, Dieter
AU - Hohagen, Fritz
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002/9/1
Y1 - 2002/9/1
N2 - Objective: Psychometric evaluation of the Pittsburgh Sleep Quality Index (PSQI) for primary insomnia. Methods: The study sample consisted of 80 patients with primary insomnia (DSM-IV). The length of the test-retest interval was either 2 days or several weeks. Validity analyses were calculated for PSQI data and data from sleep diaries, as well as polysomnography. To evaluate the specificity of the PSQI, insomnia patients were compared with a control group of 45 healthy subjects. Results: In primary insomnia patients, the overall PSQI global score correlation coefficient for test-retest reliability was .87. Validity analyses showed high correlations between PSQI and sleep log data and lower correlations with polysomnography data. A PSQI global score > 5 resulted in a sensitivity of 98.7 and specificity of 84.8 as a marker for sleep disturbances in insomnia patients versus controls. Conclusion: The PSQI has a high test-retest reliability and a good validity for patients with primary insomnia.
AB - Objective: Psychometric evaluation of the Pittsburgh Sleep Quality Index (PSQI) for primary insomnia. Methods: The study sample consisted of 80 patients with primary insomnia (DSM-IV). The length of the test-retest interval was either 2 days or several weeks. Validity analyses were calculated for PSQI data and data from sleep diaries, as well as polysomnography. To evaluate the specificity of the PSQI, insomnia patients were compared with a control group of 45 healthy subjects. Results: In primary insomnia patients, the overall PSQI global score correlation coefficient for test-retest reliability was .87. Validity analyses showed high correlations between PSQI and sleep log data and lower correlations with polysomnography data. A PSQI global score > 5 resulted in a sensitivity of 98.7 and specificity of 84.8 as a marker for sleep disturbances in insomnia patients versus controls. Conclusion: The PSQI has a high test-retest reliability and a good validity for patients with primary insomnia.
UR - http://www.scopus.com/inward/record.url?scp=0036745593&partnerID=8YFLogxK
U2 - 10.1016/S0022-3999(02)00330-6
DO - 10.1016/S0022-3999(02)00330-6
M3 - Journal articles
C2 - 12217446
AN - SCOPUS:0036745593
SN - 0022-3999
VL - 53
SP - 737
EP - 740
JO - Journal of Psychosomatic Research
JF - Journal of Psychosomatic Research
IS - 3
ER -
