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. 2020 Feb 13;50(1):132-140.
doi: 10.3906/sag-1908-35.

An epidemiologic study of physician-diagnosed chronic obstructive pulmonary disease in the Turkish population: COPDTURKEY-1

Tarkan Özdemir  1 , Nilgün Yilmaz Demirci  2 , Hatice Kiliç  3 , Orhan Koç  4 , Akin Kaya  5 , Can Öztürk  2
Affiliations

An epidemiologic study of physician-diagnosed chronic obstructive pulmonary disease in the Turkish population: COPDTURKEY-1

Tarkan Özdemir et al. Turk J Med Sci. .

Abstract

Background/aim: Chronic obstructive pulmonary disease (COPD) is a common disease characterized by persistent airflow limitation and respiratory symptoms. It is a leading cause of morbidity and mortality all over the world. Our data on COPD in Turkey are limited. This study was intended to examine the epidemiologic characteristics of COPD in the Turkish population, between 2012 and 2016.

Materials and methods: This population-based, descriptive, surveillance study examined physician-diagnosed COPD prevalence, incidence, and mortality in Turkey. The database of the Social Security System of Turkey was scanned and ICD-10 J44.0-J44.9 codes for diagnostic and/ or therapeutic purposes were evaluated retrospectively.

Results: In 2016, there were 3,434,262 cases of COPD (56.2% men) in Turkey, and the mean age of patients was 61.62 ± 14.76 years. From 2012 to 2016, the annual overall prevalence rates of physician-diagnosed COPD rose from 4.3% to 5.8%, which was a 35.0% relative increase (P < 0.05). In women, this rate rose from 3.7% to 5.1% (38% increase), and in men, it rose from 4.9% to 6.7% (37% increase). During the study period, the overall incidence decreased from 8.5 per 1000 adults in 2012 to 6.3 per 1000 adults in 2016, representing a decrease of 26.6% (P < 0.001). The annual incidence rates of physician-diagnosed COPD decreased 25.4% in women and 27.9% in men. The overall mortality was 4.3% in 2012, and 4.2% in 2016. The mortality rate in women was 3.5% in 2012 and 3.7% in 2016, and 5% in 2012 and 4.7% in 2016 in men. The mean prevalence by region was 5.26% (range 3.79%–7.65%). The Black Sea region had the highest COPD prevalence.

Conclusion: COPD is a very common and serious cause of morbidity and mortality in Turkey, as it is worldwide. Current data will contribute to a better understanding of the epidemiologic dimension of COPD in our country.

Keywords: epidemiology; health information systems; incidence; mortality; population characteristics; prevalence; Chronic obstructive pulmonary disease.

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Conflict of interest statement

None declared

Figures

Figure 1
Figure 1
Flow chart of methodology.
Figure 2
Figure 2
Average age of newly-diagnosed patients with COPD in Turkey, from 2012 to 2016.
Figure 3
Figure 3
Annual overall and sex-stratified physician-diagnosed COPD prevalence rates in Turkey, from 2012 to 2016.
Figure 4
Figure 4
Annual overall and sex-stratified physician-diagnosed COPD incidence rates in Turkey, from 2012 to 2016.
Figure 5
Figure 5
Annual overall and sex-stratified physician-diagnosed COPD mortality rates in Turkey, from 2012 to 2016.
Figure 6
Figure 6
Prevalence of physician-diagnosed COPD by city in Turkey, in 2016.
See this image and copyright information in PMC

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