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. 2018 Aug 13;4(3):e62. doi: 10.2196/publichealth.9800

Table 2.

Data matching criteria.

Match Level Matching criteria
Match 1 If First Name, Last Name, Date of Birth
Match 2 Else if, First Name (First 6 Letters), Last Name, Date of Birth
Match 3 Else if, Last Name (First Letter), Last Name (Letters 3 through 8), First Name (Letters 2 through 8), Date of Birth
Match 4 Else if, Last Name (First Letter), Last Name (Letters 3 through 8), First Name (Letters 2 through 8), Birth Month, Birth Year
Match 5 Else if, Last Name (First Letter), Last Name (Letters 3 through 8), First Name (Letters 2 through 8), Birth Day, Birth Year
Match 6 Else, if Last Name, First Name (Letters 1 through 2), Date of Birth
Match 7 Else, if Last Name (Letters 1 through 3), First Name (Letters 1 through 3), Date of Birth
Match 8 Else if, Last Name (Letters 1 through 4), First Name (Letters 1 through 4), Birth Year
Match 9 Else if, First Name (Letters 1 through 3), Last Name (Letters 1 through 3), Birth Month, Birth Year
Match 10 Else if, First Name (Letters 1 through 3), Last Name (Letters 1 through 3), Birth Day, Birth Year
Match 11 First Name (Letters 1 through 3), Last Name (Letters 1 through 3), Birth Month, Birth Year