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Table 1 Studies that provide Oxford Hip change scores at 12 months for patients undergoing hip replacement

From: What is the optimal time point to assess patient-reported recovery after hip and knee replacement? a systematic review and analysis of routinely reported outcome data from the English patient-reported outcome measures programme

Study reference Location Description of surgery Study design Number of patients Baseline OHS 12-month OHS OHS change
Hajat (2002) [8] England THR Prospective cohort 6572 15.3 38.1 22.8
Palan (2009) [9] England THR by trainer Prospective cohort 795 16.6 39.9 23.3
Palan (2009) [9] England THR by trainee Prospective cohort 449 15.2 38.5 23.3
O’Brien (2009) [10] Northern Ireland THA Prospective cohort 335 10.8 38.9 28.1
Simpson (2010) [6] England THR: Furlong HAC stem RCT 23 13.2 40.1 26.9
Simpson (2010) [6] England THR: Furlong Active Femoral stem RCT 20 13.1 43.4 30.3
Thomas (2011) [11] England THR: high cross linked polyethylene RCT 22 12.0 46.7 34.7
Thomas (2011) [11] England THR: ultra-high molecular weight RCT 22 10.0 47.1 37.1
Desai (2011) [12] England THA: leg-length discrepancy technique RCT 35 17.6 41.9 24.3
Desai (2011) [12] England THA: standard technique RCT 35 18.8 39.7 20.9