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Table 7 Between group comparison of the secondary outcome measures at each time point

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

Approach Mean (SD)   95% Cl   P value
Anterior Lateral Anterior Lateral  
XSMFA functional index      
 Preoperative 35.2 (16.1) 40.5(16.0) 31.4-38.6 36.3-43.7 0.053a
 6 weeks 21.2 (14.2) 28.5(15.9) 17.8-24.2 23.7-32.3 0.026a
 3 months 12.7(12.5) 18.8 (16.1) 9.2-14.8 13.7-22.3 0.023a
 6 months 11.6(12.1) 15.8 (15.4) 8.3-13.7 10.7-19.3 0.094a
 12 months 10.3(13.0) 15.1 (16.3) 7.3-13.3 10.5-19.5 0.040a
XSMFA bother index      
 Preoperative 48.7 (20.5) 53.0 (17.9) 43.4-52.6 48.8-57.2 0.126a
 6 weeks 26.6 (19.8) 33.0 (18.3) 21.6-30.5 28.1-37.9 0.055a
 3 months 19.8 (17.0) 33.0 (18.1) 15.2-22.9 28.1-37.9 0.099a
 6 months 16.8 (15.8) 25.1 (17.9) 12.4-19.6 20.0-30.0 0.149a
 12 months 15.8 (18.0) 21.7 (19.6) 10.8-19.1 9.6-20.4 0.056a
T25-FW (s)      
 Preoperative 22.4 (5.2) 24.0 (3.9) 20.8-23.2 23.1-24.9 0.193a
 6 weeks 21.3(6.3) 22.0 (4.2) 19.6-22.4 20.0-23.1 0.385a
 3 months 18.5 (3.7) 19.4 (3.8) 17.2-18.8 17.0-19.0 0.291a
 6 months 18.3 (4.1) 19.9 (5.5) 17.1-18.9 17.5-20.5 0.040a
 12 months 18.1 (3.4) 19.8 (4.6) 17.2-18.8 17.7-20.3 0.046a
Activity VAS      
 Preoperative 5.0 (0.8) 4.9 (0.8) 4.8-5.2 3.8-4.2 0.461a
 6 weeks 6.9 (0.7) 6.8 (0.6) 5.8-6.2 5.8-6.2 0.031a
 3 months 7.3 (0.8) 6.9 (0.5) 6.8-7.2 5.9-6.1 0.080a
 6 months 7.3 (0.7) 6.9 (0.7) 6.8-7.2 6.7-7.1 0.223a
 12 months 7.5 (0.6) 7.0 (0.7) 6.9-7.1 6.8-7.2 <0.001a
Walking distance (m)      
 12 months 6435 (4260) 5125 (3868) 5458-7412 4053-6197 0.045a
SF-36 PCS      
 Preoperative 27.4 (8.2) 25.6 (8.7) 25.5-28.8 23.0-27.0 0.152a
 6 weeks 39.1 (9.7) 34.8 (9.8) 36,8-41,2 31.4-36.6 0.004a
 3 months 44.6 (9.2) 40.7 (10.1) 41.9-46.1 37.3-42.7 0.031a
 6 months 46.0 (10.0) 42.7 (5.6) 43.7-48.3 40.5-43.6 0.042a
 12 months 47.5 (9.9) 42.9 (11.9) 44.7-49.3 40.1-43.9 0.017a
SF-36 MCS      
 Preoperative 57.2 (8.5) 56.3 (9.2) 55.1-58.9 53.9-58.1 0.405a
 6 weeks 58.1 (8.7) 59.3 (6.6) 56.0-60.0 57.2-60.8 0.465a
 3 months 56.0 (9.2) 56.7 (8.3) 53.9-58.1 53.8-58.2 0.774a
 6 months 56.0 (10.0) 55.8 (7.2) 53.7-58.3 53.0-57.0 0.670a
 12 months 55.0 (9.8) 56.2 (6.9) 52.8-57.3 54.1-57.9 0.714a
  1. SD standard deviation, Cl confidence interval
  2. a Mann-Whitney-U test