Gaffney AW, Himmelstein DU, Christiani DC, et al. - This study sought to present long-term trends in socioeconomic disparities in respiratory disease prevalence, pulmonary symptoms, and pulmonary function. Between 1959 to 2018, researchers performed a repeated cross-sectional analysis of the nationally-representative National Health and Nutrition Examination Surveys and predecessor surveys including a total of 215,399 participants aged 6 to 74 years. The sample enrolled 215 399 individuals surveyed between 1959 and 2018: 27,948 children aged 6 to 11 years; 26,956 children aged 12 to 17 years; and 105,591 adults aged 18 to 74 years. The results showed that socioeconomic disparities in pulmonary health persisted and potentially worsened over the past 6 decades, implying that the advantages of improved air quality and smoking reductions have not been equally distributed. The results considered that socioeconomic position may function as an independent determinant of pulmonary health.