Data quality assessment of pig movements in the Norwegian Livestock Register reveals challenges for outbreak preparedness

Table 2 Attributes and measures used for assessing data quality for pig movements in the Norwegian Livestock Register for 2022

Attribute	Measure description	Subset	Level	Method
Accuracy	Missing data	All	Record	Checking for missing values
	Inactive farm identifier	Farms	Farm	Cross-validation between Register for Carcass Deliveries and Register for Production Subsidies
	Invalid batch size	All	Record	Checking for unexpected values
	Unlikely movements between farm categories	Live animal movements	Record	Checking for movements against expected animal flow
Completeness	Registration of slaughter movements	All	Farm, National	Cross-validation with Register for Carcass Deliveries
	Registration of outgoing live animal movements mediated by slaughterhouses	Producers sending live pigs to other producers	Farm	Cross-validation with Register for Carcass Deliveries
	Balance of in-going and out-going movements in commercial finishers	Commercial finishers with population data	Farm	Checking for expected balance
	Regular movements within sow pools	Sow pools	Farm	Checking for regular movements between central units and satellites
Timeliness	Compliance with registration of movements within 7 days	All	Farm, Slaughter-house	Calculated time between movement event and registration date

ISSN: 1746-6148