Table 3

The 20 principal natural categories (PNCs) with most major disabilities

PNCMajor disabilities in each PNCNo of adverse events in each PNCRate of major disability in each PNC (%)*
*The rate of major disability is calculated only for those cases where an outcome was recorded, and not for the total incidence of the PNC. The PNCs highlighted in bold text are also among the most frequent PNCs. †Those which fell into the 20 PNCs with most resource consumption.
Other PNCs (with at least five cases) that led to high rates of major disability are “No, inadequate prophylaxis for asthma” (7 cases, 43%), “Failure tendon repair/release” (5 cases, 40%), “Infected orthopaedic implanted prosthetic device” (5 cases, 40%), “Postoperative abscess: cholecystectomy, bile duct surgery” (6 cases, 40%), “Failed angioplasty/angiogram” (8 cases, 38%), “Wound breakdown/dehiscence/necrosis - no evidence of infection following abdominal/retroperitoneal/pelvic procedure” (9 cases, 33%), and “Seizure following cessation/reduction/non-prescription of anti-epileptics” (6 cases, 33%).
No, delay, inadequate investigation ischaemic heart disease203467
Ongoing pain/restricted movement following back surgery102250
Postoperative bowel obstruction/adhesions92143
Injury due to a fall in a nursing home81942
Problems following radiation therapy81553
Failed/blocked/ruptured/ aneurysm, vascular grafts51729
Failed hip replacement5863
Inadequate reduction of a fracture/poor alignment 52619
Recurrent incisional hernia52025
Stiffness/restricted movement following joint surgery†5956
Wound infection following peripheral procedure52917
Pressure sore/decubitus ulcer43213
Acute pain postoperative/procedure 41625
Incisional hernia: post-procedural42715
Diagnosis delay/no/wrong, cancer large bowel**3938
No, delay, inadequate treatment of complications/progression of cancer3838
No, delay, inadequate treatment respiratory problem31225
Bleeding related to warfarin therapy†3933
Pulmonary embolism postoperatively32214
Diagnosis delay/no/wrong, cancer cervix3475