Table 1 Socio-demographic variables used for analysis at municipal level

Education Level

[0] “Limited or No Education”

[1] “From 1 to 6 Years”

[2] “From 6 to 9 Years”

[3] “From 9 to 12 Years”

[4] “More than 12 Years”

Health Insurance Coverage

Percentile distribution groups from 1 to 10.

1 (No coverage) – 10 (Full coverage)

Municipal Size

[1] Rural: Less than 2,500 population.

[2] Small Towns: More than 2,500 and less than 10,000.

[3] Urban: More than 10,000 population and not classified as metropolitan.

[4] Metropolitan: Municipalities classified by Mexico’s Population Council [11].