Non-communicable diseases in Southern Tunisia: morbidity, mortality profile and chronological trends

Abstract

Abstract Introduction Non-communicable diseases (NCDs) represent a major public health problem worldwide. Giving their impact on the morbidity and mortality burden, understanding their chronological trends over time is a priority for epidemiological surveillance. We aimed to determine the epidemiological specificities of NCDs and to study their chronological trends over the period 2010-2015. Methods We retrospectively collected data of hospitalized patients from the regional registry of morbidity and mortality in the Southern University Hospital of Tunisia during the period 2010-2015. Results We included 18081 patients with NCDs aged ≥ 25 years, with an annual number of 3013 cases/year. The median age of patients was 60 years(Interquartile range IQR = [43-80 years)]). There were 10288 males(57%), with a sex ratio (male/female)of 1.3. The distribution of NCDs was characterized by the predominance of cardiovascular disease(CVD)(10346 cases, 57.2%), then cancers(3034 cases; 16.8%),diabetes(2489 cases; 13.8%) and chronic respiratory tract diseases(2212 cases; 12.2%). Chronological trends analysis of NCDs showed that they remained globally stable between 2010 and 2015. The same result was applied to the group of cancers, chronic respiratory diseases and diabetes mellitus. However, there was a sharp rise for CVD between 2010 and 2015(ρ = 0.84; p = 0.036). The proportion of CVD increased significantly among men(ρ = 0.87; p = 0.019) and elderly(ρ = 0.88; p = 0.019). During the study period, 234 deaths were due to NCDs, with hospital mortality and lethality rates of 5.2/1000 hospitalizations and 1.29%, respectively. CVD were the main cause of deaths(60%). The hospital mortality rate of NCDs increased significantly from 2010 to 2015(ρ = 0.85; p = 0.031), notably for CVDs(ρ = 0.94; p = 0.005). Conclusions Chronological trends analysis revealed a significant rise in the morbidity and mortality burden ofCVDs during the period 2010-2015. It is imperative, therefore, to strengthen health care for these patients. Key messages Non-communicable diseases. Morbidity and mortality.