Volume 19, Number 3—March 2013
Dispatch
Prioritizing Tuberculosis Clusters by Genotype for Public Health Action, Washington, USA
Figure
![Figure. . . Formula used to calculate geospatial statistic (a modified log-likelihood ratio [LLR]) on the basis of geographic distribution of Mycobacterium tuberculosis genotype clusters, Washington, USA. Variables are classified as follows: a = number of tuberculosis (TB) cases with the genotype of interest in the selected county; b = number of cases with the genotype of interest in the United States; c = number of cases without the genotype of interest in the selected county; d = number of cases without the genotype of interest in the United States; N = total number of TB cases. Formula used to calculate geospatial statistic (a modified log-likelihood ratio [LLR]) on the basis of geographic distribution of Mycobacterium tuberculosis genotype clusters, Washington, USA. Variables are classified as follows: a = number of tuberculosis (TB) cases with the genotype of interest in the selected county; b = number of cases with the genotype of interest in the United States; c = number of cases without the genotype of interest in the selected county; d = number of cases without t](/eid/images/12-1453-F1.jpg)
Figure. . . Formula used to calculate geospatial statistic (a modified log-likelihood ratio [LLR]) on the basis of geographic distribution of Mycobacterium tuberculosis genotype clusters, Washington, USA. Variables are classified as follows: a = number of tuberculosis (TB) cases with the genotype of interest in the selected county; b = number of cases with the genotype of interest in the United States; c = number of cases without the genotype of interest in the selected county; d = number of cases without the genotype of interest in the United States; N = total number of TB cases.