The paper analyses the connection between resources, access, efficiency and effectiveness in 645 municipalities in the São Paulo State, Brazil, between 2009 and 2014. To achieve it, the essay has developed descriptive statistics, correlation analysis and principal component regression analysis. The descriptive statistics have shown high inequality in the health delivered services in resources, access and effectiveness. The correlation analysis has pointed out a possible financial dependence of the municipalities from the transferred funds. Finally, the regression analysis has demonstrated: a non-direct relation between resources and effectiveness in a public health system, a better capacity of the financial and human resources on explaining access and efficiency, and a higher impact of nurses in access and efficiency than physicians in the primary care.