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A-a GradientAsthma Control Test (ACT)BODE IndexBSI (Bronchiectasis Severity Index)CAT Score (COPD Assessment)FEV1/FVC InterpreterGAP IndexGOLD Spirometric GradingLight's CriteriaP/F Ratio (PaO2/FiO2)STOP-BANG ScoreWinter's FormulamMRC Dyspnea Scale
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Clinical Notice:Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for professional clinical judgment. OpiCalc is an auxiliary reference tool for qualified healthcare professionals.

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CAT Score (COPD Assessment)

Symptom Impact Assessment

Select one score per symptom

0/8 Completed
Cough
Never cough
Cough all the time
Never coughCough all the time
Phlegm
No phlegm
Chest full of phlegm
No phlegmChest full of phlegm
Chest Tightness
No tightness
Very tight chest
No tightnessVery tight chest
Breathlessness
Not breathless on stairs
Very breathless on stairs
Not breathless on stairsVery breathless on stairs
Activity Limitation
No limitations at home
Very limited at home
No limitations at homeVery limited at home
Confidence
Confident leaving home
Not confident leaving home
Confident leaving homeNot confident leaving home
Sleep
Sleep soundly
Not sleeping soundly
Sleep soundlyNot sleeping soundly
Energy
Lots of energy
No energy at all
Lots of energyNo energy at all

Assessment Required

The CAT score provides a standardized metric for health status impairment in COPD. Complete the 8-item survey for interpretation.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Last Comprehensive Review: 2026

Related Pulmonary Tools

BSI
Winter's Formula
Light's Criteria
A-a Gradient
STOP-BANG Score
P/F Ratio
BODE Index
FEV1/FVC Interpreter
mMRC Dyspnea Scale
GOLD Spirometric Grading
Pulmonary CalculatorsCritical Care CalculatorsInternal Medicine Calculators
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