First Use of Multiple Imputation with the National Tuberculosis Surveillance System

<table>Missingness of HIV infection status with respect to age among TBM patients in the USA, from 1993 to 2005. “HIV status unknown” includes subjects with HIV status reported to be “indeterminate,” “test done and results unknown,” “not offered,” “refused,” and “unknown.” This category also includes subjects with the HIV status response item left blank.</table>

Epidemiology Research International

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Figure 1

Figure 1: First Use of Multiple Imputation with the National Tuberculosis Surveillance System 