Correlation and Simple Linear Regression Analyses of Prevalence of Drug-resistant TB in Recent and Previous U.S. NTSS Data and Global DRS Data.

Note. *P value is reported for F test of overall significance of simple linear regression model. Dashes were put for comparisons where no linear association was observed. NTSS = National Tuberculosis Surveillance System. Global DRS =  Global Project on Anti-Tuberculosis Drug Resistance Surveillance.