Trends in Cancer Diseases Prevalence by Different Socioeconomic Strata in the United States

Abstract

Background Income disparity among different socioeconomic strata in the United States has widened sharply in recent decades. Take into account the well-established link between income and health, this widening income gap may provide insight into the dynamics of the cancer disease burden in American adults. Assess the temporal trends of the 20-year predicted absolute cancer risk in American adults at different socioeconomic classes. Methods The cross-sectional analyses were carried out using data from adults aged 20 to 85 years between the 1999 and 2018 NHANES. Socioeconomic status was divided into three groups based on the family income to poverty ratio (PIR): high income (PIR ≥ 4), middle income (> 1 and <4), or at or below the federal poverty level (≤ 1). Results The analysis included 49 720 participants. The prevalence of lung cancer was lower in high-income participants than in middle-income participants (0.15% [n= 19] vs 0.35% [n= 92], p <0.001). For the low-income stratum, the prevalence of breast cancer was 1.12% [n = 117], but the number of adults in the middle (1.48% [n = 391], p = 0.009) and high-income levels (1.71% [n = 219], p <0.001) has increased. Conclusions The study found that the prevalence of cancer diseases was increasingly different among participants of different socioeconomic classes of NHANES from 1999 to 2018. Further research is required on the dynamics and health impact of income inequality, as well as public health policies and efforts to reduce these inequalities.