Smoking history can predict survival time in COPD

Vienna, Austria: Identifying an individual's the smoking history could help doctors to predict survival time in people with COPD.

A new study, which will be presented today (4 September 2012) at the European Respiratory Society's Annual Congress in Vienna, has identified that the measurement, pack–years, is a strong predictor for mortality in COPD.

(COPD) is a term given to a group of conditions which cause a gradual restriction of which gives people difficulty breathing. The condition is largely caused by smoking, yet clinicians are still unsure what factors of the illness will determine a person's survival time from diagnosis.

Researchers analysed 208 people with COPD, 104 of them died during the study. The average survival time for these people was 10.4 years from inclusion. The researchers measured a number of clinical factors including lung function tests, age and patient history, number of pack–years and the degree of emphysema using a CT scan. They then used a statistical survival model, called the Cox proportional hazard , to analyse the probability that each factor could help predict survival time.

The results showed that the age of the patient and their pack–years they had smoked were statistically significant predictors of mortality. The area of emphysema measured by CT scan also emerged as a strong predictor of mortality.

Lead author, Dr Saher B. Shaker, from Gentofte University Hospital in Denmark, said: "Our results have clinical relevance as we have identified three factors, pack–years, age and area of , as strong predictors of mortality in COPD. It was also interesting to note that measurements taken from the lung function tests did not reach ."

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Obama addresses West Africans on facts about Ebola

21 minutes ago

President Barack Obama urged West Africans on Tuesday to wear gloves and masks when caring for Ebola patients or burying anyone who died of the disease. He also discouraged the traditional burial practice ...

Gluten-free diet benefits asymptomatic EmA+ adults

25 minutes ago

(HealthDay)—Asymptomatic individuals with endomysial antibodies (EmA) benefit from a gluten-free diet (GFD), according to a study published in the September issue of Gastroenterology.

Another US health worker infected with Ebola

42 minutes ago

A third American health worker has tested positive for the Ebola virus while working with patients in West Africa, the Christian missionary group SIM said Tuesday.

UN implores all countries to help on Ebola

2 hours ago

The international group Doctor Without Borders warned Tuesday that the world is 'losing the battle' against Ebola, while U.N. officials implored all countries to quickly step up their response by contributing health experts ...

Travel restrictions could worsen Ebola crisis: experts

7 hours ago

Travel restrictions could worsen West Africa's Ebola epidemic, limiting medical and food supplies and keeping out much-needed doctors, virologists said Tuesday as the disease continued its deadly spread.

User comments