Global Initiative for Chronic Obstructive Lung Disease (GOLD). Global Strategy for the Diagnosis, Management, and Prevention of COPD. 2022 Report.

Jones PW, Harding G, Berry P, Wiklund I, Chen WH, Kline Leidy N. Development and first validation of the COPD Assessment Test. Eur Respir J. 2009;34(3):648-54.

Jones PW, Tabberer M, Chen WH. Creating scenarios of the impact of COPD and their relationship to COPD Assessment Test (CAT™) scores. BMC Pulm Med. 2011;11:42.

Dodd JW, Hogg L, Nolan J, et al. COPD assessment test (CAT): response to pulmonary rehabilitation. A multicentre, prospective study. The Thorax. 2011;66(5):425-9.

Husebø, G, Köll R, Nielsen A et al. CAT-score is a predictor for mortality in COPD. 6.1 Epidemiology. Eur Respir J. 2016;48:PA3106.

Dr. Paul W. Jones

//define vars
var calc_output = [];
var energy = parseFloat(energy);
var sleep = parseFloat(sleep);
var confidence = parseFloat(confidence);
var activities = parseFloat(activities);
var breath = parseFloat(breath);
var chest = parseFloat(chest);
var ph = parseFloat(ph);
var cough = parseFloat(cough);

//score
var score = energy + sleep + confidence + activities + breath + chest + ph + cough;

//interpretation
var risk, rec;

if (score >= 0 && score <= 10) {
	risk = "Low";
	rec = "smoking cessation, preventive care, and reduced exposure to exacerbation risk factors; consider LAMA and rescue inhalers";
} else if (score >= 11 && score <= 20) {
	risk = "Medium";
	rec = "smoking cessation, preventive care, reduced exposure to exacerbation risk factors, and LAMA and rescue inhalers; consider ICS and/or LABA, referrals for pulmonary rehab, and possible lung transplant evaluation";
} else if (score >= 21 && score <= 30) {
	risk = "High";
	rec = "smoking cessation, preventive care, reduced exposure to exacerbation risk factors, ICS/LABA/LAMA therapy, referrals for pulmonary rehab, possible lung transplant evaluation, and O₂ supplementation";
} else if (score >= 31 && score <= 40) {
	risk = "Very high";
	rec = "smoking cessation, preventive care, reduced exposure to exacerbation risk factors, ICS/LABA/LAMA therapy, referrals for pulmonary rehab, possible lung transplant evaluation, and O₂ supplementation";
}

//results
calc_output.push({
 name: 'mini',
 value: score,
 value_text: 'points',
 message: risk + ' health impact'
});
calc_output.push({
 name: 'Score',
 value: score,
 value_text: 'points',
 message: 'CAT Score' 
});
calc_output.push({
 name: 'risk1',
 value: risk, 
 value_text: '',
 message: 'Health impact'
});
calc_output.push({
 name: 'risk1',
 value: '', 
 value_text: '',
 message: 'Recommend ' + rec
});

COPD Assessment Test (CAT)

cough

chest

breath

activities

confidence

sleep

energy

Quantifies impact of COPD symptoms on patients' overall health.

Sachin Patel, MD

The COPD Assessment Test (CAT) quantifies impact of COPD symptoms on patients’ overall health.

GOLD COPD Criteria

Estimated Peak Flow

BODE Index

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Calc Function