A validation study of the Brief Scale for Psychiatric problems in Orthopaedic Patients (BS-POP) for patients with chronic low back pain (verification of reliability, validity, and reproducibility).
BACKGROUND
We developed the Brief Scale for Psychiatric problems in Orthopaedic Patients (BS-POP) (doctor and patient versions). The present study aimed to proactively verify the factorial validity, internal consistency, criterion-related validity and reproducibility of the BS-POP with regard to chronic low back pain patients.


METHODS
Subjects comprised 193 chronic low back pain patients. During the first test, the BS-POP, Minnesota Multiphasic Personality Inventory (MMPI), Profile of Mood States (POMS) and 36-Item Short-Form Health Survey version 2 (SF-36 v2) were conducted. In the second test, patients were asked to complete the BS-POP in order to verify BS-POP reproducibility.


RESULTS
Factor analysis demonstrated the factorial validity of the BS-POP, including 1-factor structure. Internal consistency was confirmed by Cronbach's α reliability coefficients of 0.794 (doctor version) and 0.750 (patient version). Criterion-related validity was confirmed through association with the psychosocial factors of the SF-36, the MMPI, and the POMS. The correlation coefficients for the retests were r = 0.654 (doctor version) and r = 0.719 (patient version), showing reproducibility.


CONCLUSIONS
The present findings indicate that the BS-POP possesses sufficient reliability regarding computational psychology. The BS-POP constitutes a tool enabling orthopaedists themselves to easily identify psychiatric problems in orthopaedic patients. Further study is required regarding responsiveness.
Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295, Japan. kacchiro1031@hotmail.com
Katshuhiro
K
Yoshida
Miho
M
Sekiguchi
Koji
K
Otani
Hirobumi
H
Mashiko
Harumi
H
Shiota
Takafumi
T
Wakita
Shin ichi
Si
Niwa
Shin-ichi
S
Kikuchi
Shin-ichi
S
Konno
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007564:Japan; D017116:Low Back Pain / Q000175:diagnosis* / Q000523:psychology / Q000534:rehabilitation; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D010147:Pain Measurement; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D055815:Young Adult