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Table 1 General characteristics of the study population by comorbidity burden (2005–2016)

From: Impact of comorbidity on the short- and medium-term risk of revision in total hip and knee arthroplasty

  TKA (n = 49,701) THA (n = 17,923)
n % n %
Sex
 Men 14,455 29.1 8854 49.4
 Women 35,246 70.9 9069 50.6
Year of the intervention
 2005/2007 6883 13.9 2060 11.5
 2008/2010 14,309 28.8 4939 27.6
 2011/2013 14,457 29.1 6015 33.5
 2014/2016 14,052 28.3 4909 27.4
Fixation type
 Cemented 37,950 76.4 1596 8.9
 Uncemented 353 0.7 12,186 68.0
 Hybrid 7274 14.6 3895 21.7
 Inverse hybrid 442 0.9 197 1.1
 Not specified 3682 7.4 49 0.3
Type of hospital
 High technology hospital 19,066 38.4 6416 35.8
 Reference hospital 21,337 42.9 8089 45.1
 Regional hospital 9298 18.7 3418 19.1
Median age in years (IQR) 73.0 (10.3) 71.4 (14.2)
Median follow-up in years (IQR) 4.7 (5.1) 4.6 (4.6)
Median number of comorbidities (IQR)a 1 (2) 1 (2)
  1. TKA Total Knee Arthroplasty, THA Total Hip Arthroplasty
  2. n: number of patients
  3. %: percentage of patients
  4. IQR Inter-quartile range
  5. amin and max 0 and 7 respectively both for TKA and THA