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Table 2 Example of case matching of Control patients with Test patients

From: Design of a multi-site multi-state clinical trial of home monitoring of chronic disease in the community in Australia

Test/control Age Gender Major diagnosis Seifa1index for postcode Strength of match (perfect match = 0)
Test 54 M COPD 1023  
Control 56 M COPD 1025 1.682
Control 54 F HD 1022 2.163
Weights 0.2 1 1 0.16  
  1. 1SEIFA 2011 Socio-Economic Indexes for Areas [24]. SEIFA provides measures of socio-economic conditions by geographic area.
  2. 2|54-56| × 0.2 + 1 × 0 + 1 × 0 + |1023-1015| × 0.16 = 1.68.
  3. 3|54-54| × 0.2 + 1 × 1 + 1 × 1 + |1023-1022| × 0.16 = 2.16.