The Caretaker Obstreperous-Behavior Rating Assessment (COBRA) Scale

Area of Science:

• Gerontology
• Psychiatry
• Neurology

Background:

• Dementia patients often exhibit "obstreperous behaviors" (OBs), posing challenges for caretakers.
• Accurate assessment of OB types and severity is crucial for effective patient management and intervention.
• Existing assessment tools may lack comprehensiveness or reliability for caretaker use.

Purpose of the Study:

• To evaluate the utility and dependability of the Caretaker Obstreperous-Behavior Rating Assessment (COBRA) scale.
• To assess COBRA's effectiveness in identifying and quantifying OBs in dementia patients by their caretakers.

Main Methods:

• COBRA was administered to caretakers of 31 outpatients and 36 nursing home inpatients with dementia.
• Test-retest reliability was assessed in outpatients; inter-rater reliability was evaluated in nursing home inpatients.
• The COBRA scale categorizes OBs (Aggressive/Assaultive, Mechanical/Motor, Ideational/Personality, Vegetative) and uses severity/frequency measures, supported by an illustrative videotape.

Main Results:

• High test-retest correlations (.95 to .73) for 11 of 12 scores in outpatients.
• Strong inter-rater correlations (.99 to .73) for 8 of 12 scores in nursing home inpatients.
• Clinical severity of dementia correlated with OB type and severity; age, gender, and etiology were not significant factors.

Conclusions:

• The COBRA scale offers a practical, thorough, and reliable method for caretakers to assess OBs in dementia patients.
• COBRA can be a valuable instrument for evaluating interventions targeting OBs in dementia care.
• Further research is recommended to confirm COBRA's utility in diverse clinical settings.