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Table 1 Patients' characteristics: demographical, physical and clinical information about patients in study.

From: Comparative, double-blind, controlled study of intra-articular hyaluronic acid (Hyalubrix®) injections versus local anesthetic in osteoarthritis of the hip

Characteristic Hyalubrix® group (n = 22) Carbocaine group (n = 20) Global population (n = 42)
Males 12 10 22
Females 10 10 20
Smokers 4 2 6
Age 68 ± 10.3 67 ± 7.2 70 ± 8.9
Age range 44 to 79 42 to 77 42 to 79
Height 170 ± 6.9 172 ± 8.0 171 ± 7.4
Body mass index 25.6 ± 2.2 24.8 ± 4.1 25.7 ± 3.2
Hip osteoarthritis    
   Unilateral right 6 (27.3%) 12 (60.0%) 18 (42.8%)
   Unilateral left 4 (18.2%) 1 (5.0%) 5 (10.4%)
   Bilateral 12 (54.5%) 7 (35.0%) 19 (45.2%)
Type    
   Primary 21 (95.5%) 17 (85.0%) 38 (90.5%)
   Secondary 1 (4.5%) 3 (15.0%) 4 (9.5%)
Systemic osteoarthritis    
   Yes 11 (50.0%) 8 (40.0%) 19 (45.2%)
   No 11 (50.0%) 12 (60.0%) 23 (54.8%)
Duration of osteoarthritis (years)    
   Mean 4 5.5 4.71
   Median 3.5 3.5 3.5
   Standard deviation 2.87 5.1 3.93
   Minimum 1 1 1
   Maximum 10 20 20
Radiological gradea    
   2 1 (4.5%) 3 (15.0%) 4 (9.5%)
   3 21 (95.5%) 15 (75.0%) 36 (85.7%)
   4 - 2 (10.0%) 2 (4.8%)
Knee osteoarthritis    
   Absent 12 (54.5%) 12 (60.0%) 24 (57.1%)
   Unilateral right 1 (4.5%) 1 (5.0%) 2 (4.8%)
   Unilateral left 2 (9.1%) 1 (5.0%) 3 (7.1%)
   Bilateral 7 (31.8%) 6 (30.0%) 13 (31%)
  1. Data presented as n (%) or mean ± standard deviation unless otherwise stated. aDemographical, physical and clinical conditions of patients in study were similar among two subgroups.