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Table 2 Results of comparison between FOBT and TCS (aggregated weights and priorities)

From: Relationship between risk information on total colonoscopy and patient preferences for colorectal cancer screening options: Analysis using the Analytic Hierarchy Process

Criterion Group A Group B
  Global priority Local priority FOBT weight TCS weight Global priority Local priority FOBT weight TCS weight
Major criteria         
   Effectiveness   0.603 0.220 0.780   0.652 0.202 0.798
   Costs   0.147 0.830 0.170   0.149 0.839 0.161
   Avoid disadvantages   0.250 0.501 0.499   0.199 0.455 0.545
Subcriteria of 'effectiveness'         
   Mortality reduction rates 0.393 0.652 0.237 0.763 0.471 0.723 0.225 0.775
   Detection rates 0.210 0.348 0.187 0.813 0.181 0.277 0.192 0.808
Subcriteria of 'costs'         
   Time cost 0.071 0.482 0.828 0.172 0.071 0.479 0.817 0.183
   Out-of-pocket payment 0.076 0.518 0.832 0.168 0.078 0.521 0.832 0.168
Subcriteria of 'avoid disadvantages'         
   Complications 0.163 0.650 0.670 0.330 0.092 0.461 0.790 0.210
   False positives/negatives 0.088 0.250 0.185 0.815 0.107 0.539 0.168 0.832
Subcriteria of 'avoid false positives/negatives'         
   False positives 0.062 0.706 0.186 0.814 0.076 0.711 0.180 0.820
   False negatives 0.026 0.294 0.182 0.818 0.031 0.289 0.177 0.823
  1. Global priority of each subcriterion = local priority of each subcriterion * priority of the parent criterion. e.g., global priority of mortality reduction rates in Group A = 0.652*0.603 = 0.393.
  2. Weight of the parent criterion is the sum of (weight * local priority) of each subcriterion. e.g., FOBT weight of effectiveness in Group A = 0.237*0.652+0.187*0.348 = 0.220.
  3. Overall priority is the sum of (weight * local priority) of each major criterion.
  4. Overall priority of FOBT in Group A = 0.220*0.603+0.830*0.147+0.501*0.250 = 0.380.
  5. Overall priority of TCS in Group A = 0.780*0.603+0.170*0.147+0.499*0.250= 0.620.
  6. Overall priority of FOBT in Group B = 0.202*0.652+0.839*0.149+0.455*0.199= 0.348.
  7. Overall priority of TCS in Group B = 0.798*0.652+0.161*0.149+0.545*0.199 = 0.652.