Similarity Scoring Rules
Description | Q similar | Q identical |
Differences in the ‘missing/not applicable’ categories only | ![]() | ![]() |
Differences in the number of identifier coding levels | ![]() | ![]() |
Differences in number of coding levels for count values | ![]() | ![]() |
Imputation indicator v LS with no imputation indicators used | ![]() | ![]() |
Variables based on ‘tick all that apply’ census questions where one LS has all answers combined into one variable and another with a separate variable for each applicable category | ![]() | ![]() |
No equivalent variable match between LSs (either because no equivalent variable was derived or there was no equivalent question on census) | ![]() | ![]() |
Distance variables rounded to different decimal places | ![]() | ![]() |
1991 Variables only coded to 10% v equivalent variable coded to 100% | ![]() | ![]() |
Postcodes/output areas etc: enumeration address | ![]() | ![]() |
Postcodes/output areas etc: previous address/place of work | ![]() | ![]() |
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