Measuring and controlling medical record abstraction (MRA) error rates in an observational study

Table 2 QC Dataset: error rates

	True Errors n	All-Field Error Rate % [95% CI]	Adjusted All-Field Error Rate % [95% CI]	Populated-Field Error Rate % [95% CI]	Adjusted Populated-Field Error Rate % [95% CI]
P	273	1.06 [0.94, 1.20]	1.07 [0.81, 1.42]	2.62 [2.33, 2.94]	2.64 [1.97, 3.54]
NP	300	1.45 [1.30, 1.63]	1.35 [1.04, 1.75]	3.56 [3.19, 3.98]	3.31 [2.53, 4.33]
Study Totals	573	1.24 [1.14, 1.34]	1.17 [0.91, 1.50]	3.04 [2.81, 3.30]	2.87 [2.21, 3.74]

All-Field Error Rate was calculated using the Total Fields count, and Populated-Field Error Rate was calculated using the Populated Fields count from Table 1

ISSN: 1471-2288