Table 3.

Table 3 Type and Underlying Reasons for Corrective Actions Needed During Post-processing in the Field Test (10 GP practices), Standardized to a Population of 100 Patients per Practice

	General Database Error Mean (SD)	Data Entry Error GP Mean (SD)	Extraction Error Mean (SD)	Total Mean (SD)
Deleted data (n)	45.1 (110.5)	28.1 (27.8)	455.1 (406.3)	528.3 (500.6)
Modified value (n)	71.9 (63.2)	32.7 (36.7)	20.8 (25.0)	125.3 (96.7)
Modified variable (n)	0.0 (0.0)	0.0 (0.0)	20.6 (22.2)	20.6 (22.2)
Added data (n)	0.0 (0.0)	21.9 (43.6)	118.9 (123.4)	140.8 (128.2)
% Corrective actions	13.6 (10.8)	11.4 (11.9)	75.0 (16.6)