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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 4 Baseline characteristics of the unilaterally and bilaterally operated cases in the Charnley (91 and 29) and Duraloc (99 and 21) groups

From: No differences in outcomes between cemented and uncemented acetabular components after 12–14 years: results from a randomized controlled trial comparing Duraloc with Charnley cups

Acetabulum Mean 95% Confidence interval for mean
Lower bound Upper bound
Charnley
 Baseline HHS
  Unilateral 46.7 43.8 49.5
  Bilateral 49.8 43.3 56.3
  Total 47.4 44.8 50.0
Age (years)
  Unilateral 65.5 64.0 67.0
  Bilateral 63.9 60.8 67.0
  Total 65.1 63.7 66.4
BMI (kg/m2)
  Unilateral 27.4 26.4 28.3
  Bilateral 25.3 24.1 26.5
  Total 26.9 26.1 27.7
Duraloc
 Baseline HHS
  Unilateral 48.2 45.3 51.1
  Bilateral 55.2 50.0 60.3
  Total 49.4 46.9 52.0
Age (years)
  Unilateral 66.2 64.8 67.7
  Bilateral 64.4 60.8 68.1
  Total 65.9 64.6 67.3
BMI (kg/m2)a
  Unilateral 27.1 26.3 27.9
  Bilateral 24.5 23.0 26.0
  Total 26.7 25.9 27.4
  1. aSignificant difference as evidenced by nonoverlapping confidence intervals