We congratulate Ruan et al. for their important analysis. 1 They evaluated the relationships between neighborhood-level income, cancer stage at diagnosis, and cancer-specific mortality in Alberta, Canada, for 16 common cancers (143,818 patients). Statistically significant disparities were observed, with diagnoses at more advanced stages and reduced survival found in low-income neighborhood groups. This difference was more evident for screenable cancers (e.g., breast, colorectal, cervical, lung, and kidney cancers) and for cancers that can be found incidentally by self-examination (e.g., melanoma). Previous studies have found a similar correlation between low socioeconomic status and diagnosis at a more advanced stage in the United States. [2][3][4][5] In the United States, private health insurance accounts for a third of all health spending and represents the primary coverage for preventive care and screening for many US citizens. Federal and state programs, such as Medicaid, Medicare, and the National Breast and Cervical Cancer Early Detection Program, provide free breast, colorectal, and cervical cancer screening to persons who are uninsured or underinsured. The Canadian health care system is publicly funded; regardless of income, all Canadian citizens and permanent residents receive necessary care and services without additional payment at the time of provision. The findings of the study by Ruan et al. highlight that health inequities by socioeconomic status exist also in countries with single-payer health care systems. Potential barriers to access to health care, including screening for cancer, include costs, availability, traditions, education, and information. 6The structure of the preventive screening program in Italy is similar to that in Canada. Health care, including screening for cancer, is funded through government-financed schemes. Every year, almost 13 million letters concerning breast, colorectal, and cervical cancer are sent to the screenable population; these letters specify the importance of screening, the type of screening, and how, in a simple way, to make an appointment at the nearest clinic. Simultaneously, a massive mass media campaign has been implemented to address the importance of cancer screening. Persons may choose to attend screening programs organized by the National Organization Screening (NOS) or to obtain screening through their own initiative.