Skip to main content

Table 1 The demographic data

From: Complications after direct anterior versus Watson-Jones approach in total hip arthroplasty: results from a matched pair analysis on 1408 patients

  Pre-matched cohort Post-matched cohort
Total DAAb Watson-Jones p value Total DAAb Watson-Jones p value
Number of patients 1408 846 (60.0%) 562 (39.9%)   792 396 396  
Age (years) 68.9 (± 10.4) 67.4 (± 10.3) 71.4 (± 10) < 0.001 68.7 (± 10.3) 67.3 (±10.3) 68.5 (±10.2) 0.198
BMIa 27.8 ± (4.8) 27.2 (± 4.9) 28.7 (± 5.5) < 0.001 28.1 (± 4.9) 27.7 (±4.7) 27.6 (±4.9) 0.245
Female 811 (57.5%) 476 (56.3%) 335 (59.5%) 0.214 486 (61%) 243 (61.3%) 243 (61.3%) 0.382
ASA** I 98 (6.9%) 78 (9.2%) 20 (3.6%)   40 (5.0%) 24 (6.1%) 16 (4.0%)  
ASA** II 934 (66.3%) 603 (71.2%) 331 (58.9%)   568 (71.2%) 284 (71.7%) 284 (71.7%)  
ASA** III 374 (26.5%) 164 (19.3%) 210 (37.3%) < 0.001 184 (23.2%) 88 (22.22%) 96 (24.2%) 0.175
ASA** IV 2 (0.1%) 1 (0.1%) 1 (0.1%)   0 (0.0%) 0 (0.0%) 0 (0.0%)  
  1. aBMI body mass index
  2. bDAA direct anterior approach
  3. **ASA American Society of Anesthesiologists’ score