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Table 3 Tercile distribution of the age-adjusted mortality by oral and pharyngeal cancer in males (Barcelona, Spain, and São Paulo, Brazil, 1995–2003): medians for the death rate and socioeconomic indices; area-level correlation coefficient.

From: Inequalities in mortality of men by oral and pharyngeal cancer in Barcelona, Spain and São Paulo, Brazil, 1995–2003

Barcelona 1st tercile 2nd tercile 3rd tercile Correlation coefficient*
Age-adjusted death rate 4.78 6.49 11.69 --
Unemployment rate 9.8% 10.7% 12.6% +0.618 (p < 0.001)
% Low instruction 3.3% 5.1% 9.1% +0.652 (p < 0.001)
% Academic degree 17.0% 8.5% 7.0% -0.317 (p = 0.026)
HDI** 0.693 0.622 0.403 -0.515 (p < 0.001)
São Paulo 1 st tercile 2 nd tercile 3 rd tercile Correlation coefficient*
Age-adjusted death rate 6.10 9.04 12.15 --
Unemployment rate 6.1% 10.8% 8.7% +0.118 (p = 0.127)
% Low instruction 7.9% 20.2% 17.6% +0.308 (p = 0.001)
% Academic degree 31.9% 7.8% 7.6% -0.472 (p < 0.001)
HDI** 0.708 0.479 0.547 -0.348 (p < 0.001)
  1. * Correlation between each socioeconomic index and mortality, at the area level.
  2. ** HDI: human development index.