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Table 1 General characteristic of the included studies

From: Direct anterior versus posterolateral approaches for clinical outcomes after total hip arthroplasty: a systematic review and meta-analysis

Author/year Country DAA/PLA Study Follow-up Outcomes
Mean age (years) No. of patients (n) Female BMI
Hu [24] China 58.2/59.3 110/98 68/58 25.8/25.6 Prospective NC 5, 7, 10, 13, 14
Siljander [31] USA 65/64 1846/3162 1002/1799 27.4/30.2 Retrospective 3 1, 4, 5, 6, 7, 10, 12
Wu [32] China 49.67/48.21 24/23 9/10 22.16/23.32 Retrospective 15 1, 2, 3, 4, 13, 14, 15
Barrett [20] USA NC 43/44 NC NC RCT 60 15, 17
Daas [33] Netherlands 74.8/72.1 41/26 33/22 27.6/28.1 Retrospective 12 17
Fleischman [34] USA 62.7/66.6 5465/2160 2815/1164 28.4/28.8 Retrospective 24 5, 7
Godoy-Monzon [25] Argentina 56.1/57.2 40/40 17/15 NC Prospective 17.6 1,4,9,15
Triantafyllopoulos [35] USA 62.3/64.2 1182/18853 626/10126 NC Retrospective 50 3
Lee [36] Korea 65.4/68.4 12/13 NC NC Retrospective 1.5 1, 2, 9
Rykov [21] Netherlands 62.8/60.2 23/23 15/12 29/29.3 RCT 1.5 1, 2, 3, 15, 17
Zhao [22] China 64.88/62.18 60/60 36/34 24.35/25.58 RCT 6 1, 2, 3, 4, 5, 13, 14, 15, 16
Fransen [37] Netherlands 64.2/62.6 45/38 30/24 25/27.6 Retrospective 12 1, 2, 3, 14
Jelsma [26] Netherlands 66.7/67.9 87/32 48/16 26.6/28 Prospective 6 3, 5, 6, 7, 8, 10, 11, 16, 17
Langlois [27] France 86/85 38/44 32/19 21/23 Prospective 1.5 1, 3, 7, 9
Amlie [38] Norway 67/66 421/421 291/268 NC Prospective 36 7, 12
Barrett [23] USA 61.4/63.2 43/44 14/25 30.7/29.1 RCT 12 1,2,4,5,7,8,13,14,15,16,17
Nam [39] USA 66.76/66.86 110/110 71/65 28.3/27.4 Retrospective 6 13, 14
Spaans [40] Netherlands 69/68 46/46 22/32 25/29 Retrospective 12 1, 2, 3, 5, 7, 9, 11, 14
  1. NC not clear
  2. 1. operative time; 2. intraoperative blood loss; 3. length of hospital stay; 4. incision length; 5. fracture; 6. infection; 7. dislocation; 8. hematoma; 9. LLD (leg-length difference); 10. PE/DVT (pulmonary embolism/deep vein thrombosis); 11. pneumonia; 12. re-operation; 13. anteversion angle. 14. abduction angle; 15. HHS (Harris hip score); 16. VAS (visual analog scale); 17. HOOS (hip disability and osteoarthritis outcome)