Correlation patterns of cancer relative frequencies with some socioeconomic and demographic indicators in Brazil: an ecologic study

Int J Cancer. 1988 Jan 15;41(1):24-9. doi: 10.1002/ijc.2910410106.


Sex-specific relative frequencies (RF) of oral, esophageal, stomach, colon, rectal, laryngeal, lung, female breast, cervical and penile cancers obtained from a government-sponsored, nation-wide data base of histopathological diagnoses were evaluated with respect to all possible inter-site correlations and with 12 socioeconomic and demographic variables for 23 States in Brazil. Use of bivariate and multivariate methods detected a high positive intercorrelation among RFs of lung, laryngeal and colon cancers regardless of sex. RFs for these 3 sites were also positively correlated with many markers of State development and affluence. Cervical and penile cancers emerged as a distinct subset with respect to their correlation patterns. RFs for these neoplasms were highly (positively) correlated (r = 0.8606, p less than 0.001) with each other and exhibited intense negative associations with many of the affluence markers and the former cancer sites. Bivariate correlations generally exhibited a better fit with female-specific RFs than with data from males which was reflected in the number of strong correlations detected by sex.

MeSH terms

  • Brazil
  • Demography*
  • Female
  • Humans
  • Infant Mortality
  • Male
  • Neoplasms / epidemiology*
  • Penile Neoplasms / epidemiology
  • Regression Analysis
  • Socioeconomic Factors*
  • Uterine Cervical Neoplasms / epidemiology