(tuberculosis OR MTB OR MTB/RIF OR “tubercle bacillus” OR Tuberculosis [MeSH] OR “M. bovis” OR “M. africanum” OR “M. microti” OR “M. canetti”) AND (Amplicor OR Amplified OR “Direct Test” OR “Direct Detection” OR TaqMan OR Xpert OR “nucleic acid amplification” OR NAAT OR “Nucleic Acid Amplification Techniques” [MeSH]) AND (economic evaluation OR cost effectiveness OR cost utility OR decision model)