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Table 2 Preoperative, 12 months and 7 years postoperative mean scores and (standard deviations) for the SF-36 subscales, for the patients, mean age 70 (50-88).

From: Patient relevant outcome 7 years after total hip replacement for OA - a prospective study

  Patients preoperative (n = 151) Patients 12 months postoperative (n = 151) p-value preop-12 months Patients 7 years Postoperative (n = 151) p-value 12 months-7 years
SF-36 PF 31 (19.4) 68 (21.1) <0.001 54 (27.2) <0.001
SF-36 RP 9 (21.1) 61 (41.2) <0.001 45 (44.6) 0.001
SF-36 BP 31 (15.8) 75 (22.7) <0.001 63 (28.1) <0.001
SF-36 GH 68 (19.8) 73 (21.6) 0.008 63 (22.4) <0.001
SF-36 VT 49 (20.2) 73.4 (20.6) <0.001 59 (46.4) 0.003
SF-36 SF 63 (26.4) 88 (21.3) <0.001 62 (23.8) <0.001
SF-36 RE 37 (43.5) 74 (36.8) <0.001 81 (23.2) 0.10
SF-36 MH 70 (21.2) 83 (18.9) <0.001 79 (19.1) 0.03
  1. The scale is 0-100, worst to best. The p-value is calculated between preoperative outcome and 12 months postoperative outcome and between 12 months postoperative outcome and 7 years postoperative outcome.