Increases in the completeness of disease records in dairy databases following changes in the criteria determining whether a record counts as correct

Table 4 Adjusted completeness (Com adj) with exact 95% confidence intervals (CI) for different definitions of match; exact date (D), ±7 days discrepancy (E) or ±30 days discrepancy (F) were calculated for individual diagnoses from four Nordic countries over two 2-month periods in 2008

Diagnose	Match	Denmark	Finland	Norway	Sweden
		Com adj (CI)	Com adj (CI)	Com adj (CI)	Com adj (CI)
Arthritis	D	0.39 (0.32;0.47)	0.66 (0.47;0.80)	0.57 (0.25;0.84)	0.11 (0.03;0.33)
	E	0.50 (0.42;0.58)	0.67 (0.48;0.81)	0.63 (0.31;0.86)	0.11 (0.03;0.33)
	F	0.50 (0.42;0.58)	0.67 (0.48;0.81)	0.63 (0.31;0.86)	0.11 (0.03;0.33)
Laminitis	D	0.00 (0.00;0.12)	0.40 (0.13;0.75)	0.50 (0.24;0.76)	0.92 (0.67;0.99)
	E	0.00 (0.00:0.00)	0.45 (0.16;0.78)	0.50 (0.24;0.76)	0.92 (0.67;0.99)
	F	0.00 (0.00:0.00)	0.45 (0.16;0.78)	0.50 (0.24;0.76)	0.92 (0.67;0.99)
Dermatitis	D	0.77 (0.27;0.97)	0.78 (0.39;0.95)	0.00 (0.00;0.24)	0.00 (0.00;0.32)
	E	0.78 (0.74;0.81)	0.78 (0.39;0.95)	0.00 (0.00;0.24)	0.00 (0.00;0.32)
	F	0.78 (0.74;0.81)	0.78 (0.39;0.95)	0.00 (0.00;0.24)	0.00 (0.00;0.32)
Hoof abscess/sole ulcer	D	0.00 (0.00;0.01)	0.11 (0.03;0.31)	0.00 (0.00;0.28)	0.36 (0.23;0.52)
	E	0.00 (0.00;0.01)	0.11 (0.03;0.31)	0.00 (0.00;0.28)	0.36 (0.23;0.52)
	F	0.00 (0.00;0.01)	0.11 (0.03;0.31)	0.00 (0.00;0.28)	0.36 (0.23;0.52)
Lameness other	D	0.81 (075:0.86)	0.34 (0.24;0.46)	0.61 (0.42;0.76)	0.27 (0.18;0.38)
Lameness other	E	0.87 (0.74;0.93)	0.34 (0.24;0.46)	0.61 (0.42;0.76)	0.27 (0.18;0.38)
	F	0.87 (0.74;0.93)	0.34 (0.24;0.46)	0.62 (0.44;0.77)	0.27 (0.18;0.38)

ISSN: 1751-0147