Gounder et al.1991-1998   n=788 283 Brassard et al. 1998-2003 n=2524
Outpatient cost of TB treatment US$ 1 400-8 000/case   Total cost of DOT:C$ 1228/case  
Hospitalization US$ 18 588/case   Total cost of hospitalization: C$ 10 848/case  
Total cost of TST program US$ 5 665 030   Total cost of screening C$ 193 461  
Cost per case prevented US$ 123 153   Total cost of treatment of prevented cases: C$ 557 384  
Table 5: Comparison of cost of school-screening.