Table 1. Characteristics of hospital-based laboratory data reported to BioSense, 2011.

Characteristics	N (%)
Number of reporting hospital laboratories	63 (100)
Number of unique laboratory visits	821,108 (100)
Number of laboratory reports (test orders or test results)           LOINC order codes           Non-informative order codes (missing or HL7 null code “OTH”)	14,028,774 (100) 10,776,494 (76.8) 3,252,280 (23.2)
Number of laboratory reports with test results code           LOINC or SNOMED CT or both result codes           Non-informative codes (both missing or one missing and the other is HL7 null code “OTH”)	9,347,179 (66.6) 4,681,595 (33.4)
Number of test results with code by code system           LOINC codes only           SNOMED CT codes only           LOINC and SNOMED CT both	9,347,179 (100) 8,584,826 (91.8) 69,566 (0.7) 692,787 (7.4)
Number of unique LOINC codes for orders	805 (100)
Number of unique codes for results           SNOMED CT codes           LOINC codes	608 (100) 1,428 (100)
Test result status           Final result           Preliminary result           Specimen in lab           Correction           Deletes observation value (OBX) record*           Result can’t be obtained for this observation	9,347,179 (100) 6,420,538 (68.7) 2,898,975 (31.0) 18,739 (0.2) 7,011 (0.1) 331 (0.0) 7 (0.0)
Diagnostic services           Microbiology           Serology           Outside Laboratory           Virology           Immunology	9,347,179 (100) 8,849,051 (94.7) 258740 (2.8) 161,561 (1.7) 42,974 (0.5) 34,853 (0.4)