| Source | Match | ReputationScore* | 
|---|---|---|
                North West London Patient Index (NWL PI)
                
                   The NWL Patient Index linked tables holds demographics for patients registered to a practices within NWL such as patient age, gender, first language and ethnicity. Lower Super Output Area and Index of Multiple Deprivation Rank is also included. When 
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*ReputationScore indicates how established a given datasource is. Find out more.