Table 2

Number of records per selected data items in the NIHR HIC colorectal cancer research database

FieldNumber of records
Laboratory tests5071 605
Inpatient episodes13 737
 Diagnosis codes443 762
 Procedure codes154 363
Radiotherapy7726
Chemotherapy17 452
Histology reports15 311
 Relevant histology reports9226
Imaging reports96 330
Endoscopy reports13 737
 Relevant endoscopy reports11 352
  • Relevant histology reports contain references to colon or rectum; relevant imaging reports correspond to certain investigations, such as MRI of pelvis and rectum; and relevant endoscopy reports represent colonoscopies and flexible sigmoidoscopies.

  • HIC, Health Informatics Collaborative; NIHR, National Institute for Health Research.