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Table 2 Mean number of coded diagnoses, procedures, complications, unspecified and Z codes by year, season, site and coder characteristics

From: Do coder characteristics influence validity of ICD-10 hospital discharge data?

Variable Diagnoses Procedures Complications Z codes Codes ending in 8 Codes ending in 9
Total sample 4.3 1.3 0.2 0.6 0.4 0.7
Year (fiscal)       
2002 5.2 1.4 0.3 0.7 0.5 0.8
2003 4.7 1.4 0.2 0.6 0.4 0.8
2004 4.1 1.3 0.2 0.5 0.3 0.7
2005 3.8 1.2 0.2 0.5 0.3 0.7
2006 3.9 1.3 0.2 0.6 0.3 0.6
Season       
Jan-Mar 4.2 1.3 0.2 0.6 0.4 0.7
Apr-June 4.3 1.3 0.2 0.6 0.4 0.7
July-Sep 4.3 1.3 0.2 0.6 0.4 0.7
Oct-Dec 4.2 1.3 0.2 0.6 0.4 0.7
Site       
A 3.9 1.3 0.2 0.3 0.5 0.8
B (tertiary) 5.0 1.5 0.3 0.6 0.5 0.7
C 3.8 1.2 0.1 0.7 0.3 0.5
D 3.9 1.1 0.1 0.5 0.3 0.7
Volume of coding       
Low volume 4.3 1.3 0.2 0.5 0.4 0.6
High volume 4.2 1.2 0.2 0.6 0.3 0.7
Employment status       
Part-time 4.0 1.4 0.2 0.7 0.3 0.6
Full-time 4.4 1.2 0.2 0.5 0.4 0.8