Objective: To assess the utility of a brief behavioral observation met
hod to quantify pain. Design: Correlational study. Patients: 31 sickle
cell disease (SCD) patients first seen in an outpatient clinic in pai
nful crisis. Outcome Measures: Observed pain behaviors, physician rati
ng of patient pain on a 0 to 10 scale, patient rating of pain on a 0 t
o 10 scale, and patient pain report from the McGill Pain Questionnaire
. Results: High interrater reliability for the brief behavioral observ
ation was found, and observed pain behavior was found to correlate sig
nificantly with physician ratings of pain. Conclusions: This study is
an important first step toward developing a systematic behavior-observ
ation methodology for the analysis of SCD pain. The current methodolog
y was found to be reliable and easily implemented in a busy, outpatien
t clinic.