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Table 6 Within group comparison of the secondary outcome measures over time

From: A prospective randomized comparison of the minimally invasive direct anterior and the transgluteal approach for primary total hip arthroplasty

  Mean (SD)   P value   P value   P value   P value
  Preoperative 6 weeks 3 months 6 months 12 months
XSMFA fi
 Anterior 35.2 (16.1) 21.2 (14.2) <0.001a 12.7 (12.5) <0.001a 11.6 (12.1) 0.895a 10.3 (13.0) 1.000a
 Lateral 40.5(16.0) 28.5(15.9) <0.001a 18.8 (16.1) <0.001a 15.8 (15.4) 0.037a 15.1 (16.3) 1.000a
XSMFA bi
 Anterior 48.7 (20.5) 26.6 (19.8) <0.001a 19.8 (17.0) 0.005a 16.8 (15.8) 0.510a 15.8 (18.0) 1.000a
 Lateral 53.0 (17.9) 33.0 (18.3) <0.001a 33.0 (18.1) 0.021a 25.1 (17.9) 0.125a 21.7 (19.6) 1.000a
T25-FW
 Anterior 22.4 (5.2) 21.3(6.3) 0.743a 18.5 (3.7) 0.048a 18.3 (4.1) 1.000a 18.1 (3.4) 1.000a
 Lateral 24.0 (3.9) 22.0 (4.2) 0.652a 19.4 (3.8) 0.049a 19.9 (5.5) 1.000a 19.8 (4.6) 1.000a
Activity VAS
 Anterior 5.0 (0.8) 6.9 (0.7) <0.001a 7.3 (0.8) 1.000a 7.3 (0.7) 1.000a 7.5 (0.6) 1.000a
 Lateral 4.9 (0.8) 6.8 (0.6) <0.00a 6.9 (0.5) 1.000a 6.9 (0.7) 1.000a 7.0 (0.7) 1.000a
SF-36 PCS
 Anterior 27.4 (8.2) 39.1 (9.7) <0.001a 44.6 (9.2) <0.001a 46.0 (10.0) 1.000a 47.5 (9.9) 1.000a
 Lateral 25.6 (8.7) 34.8 (9.8) <0.001a 40.7 (10.1) 0.001a 42.7 (5.6) 0.277a 42.9 (11.9) 1.000a
SF-36 MCS
 Anterior 57.2 (8.5) 58.1 (8.7) 1,000a 56.0 (9.2) 1.000a 56.0 (10.0) 1.000a 55.0 (9.8) 1.000a
 Lateral 56.3 (9.2) 59.3 (6.6) 0.931a 56.7 (8.3) 1.000a 55.8 (7.2) 1.000a 56.2 (6.9) 1.000a
  1. SD standard deviation
  2. a Friedman test