Overview of all screening and diagnostic procedures by income area as classified by the World Bank.

Abstract

*<p>P-value derived from the Wald Test for the association between a screening procedure and income area.</p><p>Source: <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053644#pone.0053644-World1" target="_blank">[14]</a>.</p