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Table 1 Age and sex-specific incidence rates for primary THA per 100,000 inhabitants in Spain (2001-8).

From: Trends in primary total hip arthroplasty in Spain from 2001 to 2008: Evaluating changes in demographics, comorbidity, incidence rates, length of stay, costs and mortality

   2001 2002 2003 2004 2005 2006 2007 2008  
Age Sex N = 18,185 N = 19,029 N = 19,545 N = 19,733 N = 20,461 N = 21,176 N = 21,354 N = 22,308 P*
40-54 Men 29.64 31.90 30.83 31.61 33.97 36.62 37.97 39.14 <0.001
  Women 17.54 16.92 16.16 16.80 17.93 17.92 17.30 18.20 0.104
50-64 Men 89.80 99.37 97.41 96.92 103.27 104.48 104.53 110.86 <0.001
  Women 74.57 78.92 74.77 75.74 69.90 74.03 75.36 75.29 0.420
65-74 Men 200.39 187.94 197.35 189.43 195.56 190.92 192.18 184.98 0.022
  Women 217.76 216.53 220.47 206.90 205.14 206.89 199.46 200.96 <0.001
75-84 Men 164.55 192.34 201.86 201.05 209.11 221.16 208.99 226.10 <0.001
  Women 214.47 241.82 242.24 256.66 262.51 265.94 262.04 275.89 <0.001
≥ 85 Men 79.25 73.04 81.41 69.09 65.92 78.75 90.63 101.59 <0.001
  Women 100.59 102.27 106.43 109.22 112.70 109.87 120.03 119.35 0.008
Total Men 94.64 97.99 99.69 97.52 101.55 103.44 102.87 105.71 <0.001
  Women 102.80 106.18 105.48 104.78 104.00 104.83 102.88 105.01 0.931
  Both 99.05 102.40 102.80 101.42 102.87 104.19 102.88 105.33 <0.001
  1. Incidence rates calculated by dividing the number of cases per year sex and age group with the corresponding number of person in that population group according to the National Institute of Statistics (INE) reported at December 31 each year [17].
  2. *P value for time trend estimated using Poisson regression models