Abstract
We aim to describe the role of educational inequalities, for sex and age groups, in adult tuberculosis (TB) mortality in Colombia, 1999-2017. We linked mortality data to data estimation of the national population based on censuses and surveys to obtain primary, secondary, and tertiary adult (25+ years of age) age-standardized mortality rates (ASMR) by educational level. Thus, a population-based study was conducted using national secondary mortality data between 1999 and 2017. Tuberculosis age-standardized mortality rates were calculated separately by educational level, sex, and age groups, using Poisson regression models. Educational relative inequalities in adult mortality were evaluated by calculating the rate ratio, and the relative index of inequality (RII). Trends and joinpoints were evaluated by annual percentage change (APC). We found that, out of the 19,720 TB deaths reported, 69% occurred in men, and 45% in older adults (men and women, aged 65+). Men presented higher TB mortality rates than women (ASMR men = 7.1/100,000 inhabitants, ASMR women = 2.7/100,000 inhabitants). As mortality was consistently higher in the lowest educational level for both sexes and all age groups, inequalities in TB mortality were found to be high (RII = 9.7 and 13.4 among men and women, respectively) and growing at an annual rate of 8% and 1%. High and increasing inequalities, regarding educational level, in TB mortality in Colombia suggest the need to comprehensively address strategies for reducing TB by considering social determinants and including health education strategies throughout the country.
Highlights
Tuberculosis (TB) has been a major global health problem throughout human history and has claimed countless victims 1
The identification of inequalities from the social determinants of health (SDH) approach 8 becomes a fundamental tool in the analysis of health problems 9, and targeting inequalities should be regarded as a key intervention for TB reduction; this has already been proposed by the Colombian government strategic plan to end TB (2016-2025) 10
We only found relative index of inequality (RII) to reduce among senior women annual percentage change (APC) = -14,5% (95%CI: -15,3; -12,2), which can be observed in the convergence of the TB mortality trends among educational groups in senior women (Figure 3)
Summary
Tuberculosis (TB) has been a major global health problem throughout human history and has claimed countless victims 1. According to the World Health Organization (WHO), 10 million people were affected by this disease in 2019, with 1.2 million deaths due to TB in HIV-negative people compared to 208,000 among HIV-positive people 2. From 2012, there has been a constant increase in the number of cases, from 23.0 cases per 100,000 inhabitants in 2013 to 27.3 cases per 100,000 inhabitants in 2019 4. Individuals with conditions such as HIV or diabetes have a higher risk of acquiring TB and suffering more severe complications 5. The identification of inequalities from the social determinants of health (SDH) approach 8 becomes a fundamental tool in the analysis of health problems 9, and targeting inequalities should be regarded as a key intervention for TB reduction; this has already been proposed by the Colombian government strategic plan to end TB (2016-2025) 10
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