Table 3.

Distribution of Error Types in all Edited Reports

Error type	Total number of errors			Percentage of total errors (%)			Errors per report			Reports per 1 error
	Reader 1	Reader 2	Total	Reader 1	Reader 2	Total	Reader 1	Reader 2	Total	Reader 1	Reader 2	Total
Nonsense error	43	76	119	7.7	5.2	5.9	0.08	0.13	0.1	12.5	7.7	10
Missense—translational Error	88	111	199	15.8	7.6	9.9	0.15	0.18	0.17	6.7	5.6	6
Missense—omission error	23	2	25	4.1	0.1	1.2	0.04	0.003	0.02	25	333	50
Missense—human error	11	6	17	2	0.4	0.8	0.02	0.01	0.014	50	100	67
Spelling/grammar—typographical error	8	15	23	1.4	1	1.1	0.01	0.02	0.02	100	50	50
Spelling/grammar—homonym error	0	14	14	0	1	0.7	0	0.02	0.01	0	50	100
Spelling/grammar—grammatical error	207	1027	1234	37.2	70.5	61	0.36	1.7	1.05	2.8	0.6	1
Improper period use error	64	55	119	11.5	3.8	5.9	0.11	0.09	0.1	9.1	11.1	10
Omission—omission error (other)	49	92	141	8.8	6.3	7	0.09	0.15	0.12	11.1	6.7	8
Omission—commission error	13	26	39	2.3	1.8	1.9	0.02	0.04	0.03	50	25	33
Translational (other)	50	32	82	9	2.2	4.1	0.09	0.05	0.07	11.1	20	14

Total errors = 2,012 (reader 1 = 556, reader 2 = 1,456). Total reports = 1,173 (reader 1 = 569, reader 2 = 604)

Sample calculation (nonsense error) reader 1: (43 nonsense errors/556 total errors) × 100% = 7.7% of all errors; 43 nonsense errors/569 total reports = 0.08 errors per report; 1/0.08 errors per report = 1 error per 12.5 reports