Ordinary Least Squares (QLS) model for socioeconomic factors and breast cancer incidence.

PD: population density, PNA: percentage of non-agriculture population, SIO: second industry output, PET: percentage of population employed in tertiary industry, EDU: average years of education, PEP: percentage of population employed in primary industry, PU: percentage of unemployed (unemployment rate), PES: percentage of population employed in second industry, PI: percentage of illiteracy (illiteracy rate), PIO: primary industry output, BC: Breast cancer incidence.** Correlation is significant at the 0.01 level (2-tailed).Ordinary Least Squares (QLS) model for socioeconomic factors and breast cancer incidence.