| Category 1 (Total monthly cost of Warfarin therapy) | Category 2 (Total monthly cost of Warfarin therapy) | P value | 
      
        | UAT Approach | 
      
        | Baseline (mean cost: $1.23±0.50) | After first follow up  (mean cost: $1.19±0.55) | 1.000 | 
      
        |  | After second follow up  (mean cost: $1.23±0.54) | 1.000 | 
      
        |  | After third follow up  (mean cost: $1.25±0.53) | 1.000 | 
      
        | After first follow up | After second follow up | 0.079 | 
      
        |  | After third follow up | 0.043 | 
      
        | After second follow up | After third follow up | 1.000 | 
      
        | PPAC Approach | 
      
        | Baseline (mean cost: $1.13±0.44) | After first follow up  (mean cost: $0.65±0.22) | 0.000 | 
      
        |  | After second follow up  (mean cost: $0.66±0.21) | 0.000 | 
      
        |  | After third follow up  (mean cost: $0.66±0.21) | 0.000 | 
      
        | After first follow up | After second follow up | 1.000 | 
      
        |  | After third follow up | 1.000 | 
      
        | After second follow up | After third follow up | 1.000 |