Neutrophil count
Name neutrophils_gprd
Chapter Diseases of the blood/Full blood count
Definition
Absolute neutrophil count (not percentage) in GPRD. Values with missing units frequently have zero recorded, but this is not the case if units are provided. It is theoretically possible to have a neutrophil count measured as zero (severely immunosuppressed patients, or if white cell count is below the lower limit of detection). It is up to the analyst to remove zero values if desired.
Data Type Continuous
Data sources GPRD
Dictionaries Read
Repeated Yes
Units 10^9 / L
Range (min/max) 0-50
Valid event date range 01/01/1900 - 25/03/2010
Agreed 19 Jun 2013 (Revision 1)
Implementation
If Read code is in the neutrophils_gprd codelist

AND enttype = 184

AND data2 (value) < 50

AND data3 (units) IN (37 [10*9/L], 153 [10*9], 17 [/L])

THEN neutrophils_gprd = data2
Codelist version1
Codelist authorsAnoop Shah
Creation date19 Jun 2013
Category (code) Read code Read term CPRD Medcode
(1) 42J..00 Neutrophil count 18
(1) 42J1.00 Neutrophil count normal 23112
(1) 42J2.00 Neutropenia 4463
(1) 42J3.00 Neutrophilia 15725
(1) 42J4.00 Neutrophil count abnormal 31382
(1) 42JZ.00 Neutrophil count NOS 13777
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