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Table 3 Complications Associated with Postoperative Delirium Following Primary Elective THA (2009–2014)

From: Incidence and risk factors associated with postoperative delirium following primary elective total hip arthroplasty: a retrospective nationwide inpatient sample database study

Complication No delirium Delirium P Odds Ratio 95% Confidence Interval
Major  
 Acute renal failure 8342 (2.17%) 383 (11%) < 0.001 1.95 1.47–2.59
 Death 490 (0.13%) 28 (0.81%) 0.08 1.43 0.96–2.13
 Myocardial infarction 74 (0.02%) 6 (0.17%) 0.07 2.20 0.93–5.19
 Pneumonia 1904 (0.49%) 127 (3.65%) < 0.001 2.48 1.90–3.25
 Pulmonary embolism 345 (0.09%) 8 (0.23%) 0.42 0.74 0.35–1.55
 Stroke 2734 (0.71%) 102 (2.93%) 0.003 1.62 1.18–2.21
 Any major complicationa 12,958 (3.37%) 567 (16.3%) < 0.001 2.59 1.92–3.48
Minor  
 Deep vein thrombosis 646 (0.17%) 21 (0.6%) 0.66 0.83 0.36–1.93
 Dislocation 857 (0.22%) 30 (0.86%) 0.56 1.29 0.55–3.00
 Seroma/hematoma 1010 (0.26%) 48 (1.38%) 0.41 1.39 0.63–3.03
 Wound infection 379 (0.1%) 22 (0.63%) 0.35 1.46 0.66–3.21
 Any minor complicationb 2790 (0.72%) 113 (3.25%) 0.03 2.44 1.08–5.50
  1. Any major complicationa or minor complicationb: patients with more than one complication are counted only once