Figure 2

(A) Relationship between the ratio of age-standardised incidence rates of adenocarcinoma (AC): squamous cell carcinoma (SCC) and Human Development Index in male (upper panel) and female (lower panel). (B) Relationship between the ratio of age-standardised incidence rates of adenocarcinoma (AC): squamous cell carcinoma (SCC) and Gross Domestic Product per capita in male (upper panel) and female (lower panel). (C) Relationship between the ratio of crude incidence rates of adenocarcinoma (AC): squamous cell carcinoma (SCC) and Human Development Index in male (upper panel) and female (lower panel) (D) Relationship between the ratio of crude incidence rates of adenocarcinoma (AC): squamous cell carcinoma (SCC) and Gross Domestic Product per capita in male (upper panel) and female (lower panel).