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Table 1 Baseline demographic data of study cohort

From: 5-year clinical and radiographic follow-up of the uncemented Symax hip stem in an international study

  Centre 1 Centre 2 Total P value
No. of hips 30 50 80  
Male/female 16/14 29/21 45/35 0.684
Mean (range) age (years) 57.5 (41–71) 56.2 (30–69) 56.7 (30–71) 0.437
Mean (range) BMI (kg/m2) 27.1 (20–33) 27.0 (18–35) 27.0 (18–35) 0.913
Diagnosis, no. of hips (%)     0.135
 Osteoarthritis 27 (90.0%) 41 (82.0%) 68 (85.0%)  
 Avascular necrosis 2 (6.7%) 1 (2.0%) 3 (3.8%)  
 Posttraumatic arthritis   7 (14.0%) 7 (8.8%)  
 Other 1 (3.3%) 1 (2.0%) 2 (2.5%)