The influence of pre-operative factors on the length of in-patient stay following primary total hip replacement for osteoarthritis : A MULTIVARIATE ANALYSIS OF 2302 PATIENTS

• Published in: Journal of bone and joint surgery. British volume Vol. 91; no. 4; pp. 434 - 440
• Main Authors: DALL, G. F, OHLY, N. E, BALLANTYNE, J. A, BRENKEL, I. J
• Format: Journal Article
• Language: English
• Published: London British Editorial Society of Bone and Joint Surgery 01.04.2009; British Editorial Society of Bone & Joint Surgery
• Edition: British volume
• Subjects: Age Factors; Aged; Aged, 80 and over; Anti-Inflammatory Agents, Non-Steroidal - therapeutic use; Arthroplasty, Replacement, Hip - rehabilitation; Biological and medical sciences; Diseases of the osteoarticular system; Female; Health Status Indicators; Humans; Length of Stay - statistics & numerical data; Male; Medical sciences; Middle Aged; Miscellaneous. Osteoarticular involvement in other diseases; Orthopedic surgery; Osteoarthritis; Osteoarthritis, Hip - physiopathology; Osteoarthritis, Hip - rehabilitation; Osteoarthritis, Hip - surgery; Prognosis; Prospective Studies; Scotland; Sex Factors; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Time Factors; Scotland; Human; Hip prosthesis; Orthopedic surgery; Treatment; Diseases of the osteoarticular system; Arthropathy; Hip osteoarthritis; Degenerative disease; Osteoarthritis; Hip
• ISSN: 0301-620X; 2049-4394; 2044-5377; 2049-4408
• DOI: 10.1302/0301-620X.91B4.21505

We analysed which pre-operative factors could be used to predict the length of in-patient stay following unilateral primary total hip replacement undertaken for osteoarthritis. Data were collected prospectively from 2302 patients undergoing primary total hip replacement over a nine-year period. The relationships between the various pre-operative factors and length of stay were studied separately using either Student's t-test or Pearson's correlation, and then subjected to multiple linear regression analysis. The mean length of stay was 8.1 days (median 7; 3 to 58). After adjusting for the effects of other pre-operative factors, younger age, male gender, higher combined Harris hip function and activity score, higher general health perception dimension of the Short-Form 36 score, and non-steroidal anti-inflammatory drug use were all found to be significantly associated with a reduced length of stay.