Table 1.

Results of data editing of reported sales and purchases of cattle during the period between July 1^st 2005 and June 30^th 2006 in a dataset extracted from the Swedish database of cattle movements

	n	Kept in dataset	Excluded from dataset
Total number of reports (sales and purchases)	515572
Reports with perfect match	414246	x
Reports with different dates	71158	x
Non-matching holding reported by one of the farmers	7 216	x
Non-matching holding reported by one of the farmers, different dates reported but less than 7 days between reported dates	2 918	x
Reports without match, but where the location of the animal was correct according to the report	14 434	x
Reports also reported as slaughter or to or from pasture	393		x
Duplicates and triplicates	709		x
Inconsistent transport (e.g. animal reported to have left the same holding twice without returning in between)	1 532		x
Remaining, unexplainable reports	2 975		x