SpA | Non-SpA | |||||||
Linear trend | 95% CI | % Annual | P value | Linear trend | 95% CI | % Annual | P value | |
OS (all) | 1.049 | 1.032 to 1.066 | 4.92 | 0 | 1.084 | 1.068 to 1.1 | 8.41 | 0 |
Aged 20–40 | 0.982 | 0.963 to 1.002 | −1.8 | 0.074 | 1.047 | 1.025 to 1.07 | 4.74 | 0 |
Aged 40–60 | 1.02 | 1.012 to 1.028 | 2 | 0 | 1.072 | 1.056 to 1.087 | 7.15 | 0 |
Aged 60–80 | 1.083 | 1.071 to 1.095 | 8.3 | 0 | 1.09 | 1.073 to 1.107 | 9.02 | 0 |
Aged >80 | 1.143 | 1.098 to 1.189 | 14.3 | 0 | 1.102 | 1.077 to 1.128 | 10.25 | 0 |
THA (all) | 1.01 | 0.99 to 1.03 | 0.979 | 0.337 | 1.057 | 1.043 to 1.07 | 5.65 | 0 |
Aged 20–40 | 0.948 | 0.907 to 0.991 | −5.192 | 0.018 | 0.984 | 0.931 to 1.04 | −1.581 | 0.572 |
Aged 40–60 | 0.975 | 0.967 to 0.983 | −2.521 | 0 | 1.037 | 1.011 to 1.064 | 3.727 | 0.006 |
Aged 60–80 | 1.054 | 1.033 to 1.074 | 5.354 | 0 | 1.06 | 1.042 to 1.078 | 5.958 | 0 |
Aged >80 | 1.128 | 1.083 to 1.174 | 12.754 | 0 | 1.086 | 1.056 to 1.117 | 8.566 | 0 |
TKA (all) | 1.093 | 1.077 to 1.109 | 9.291 | 0 | 1.096 | 1.077 to 1.115 | 9.557 | 0 |
Aged 20–40 | 1.007 | 0.976 to 1.039 | 0.676 | 0.675 | The model fails to converge when group one is included | |||
Aged 40–60 | 1.048 | 1.035 to 1.06 | 4.768 | 0 | 1.115 | 1.088 to 1.143 | 11.528 | 0 |
Aged 60–80 | 1.091 | 1.08 to 1.102 | 9.109 | 0 | 1.091 | 1.069 to 1.112 | 9.06 | 0 |
Aged >80 | 1.182 | 1.092 to 1.28 | 18.199 | 0 | 1.124 | 1.084 to 1.165 | 12.383 | 0 |
ULA (all) | 1.091 | 1.068 to 1.115 | 9.11 | 0 | 1.103 | 1.079 to 1.128 | 10.311 | 0 |
Aged 20–40 | 1.027 | 0.97 to 1.088 | 2.72 | 0.363 | 1.038 | 0.988 to 1.09 | 3.794 | 0.138 |
Aged 40–60 | 1.081 | 1.051 to 1.113 | 8.121 | 0 | 1.082 | 1.057 to 1.109 | 8.245 | 0 |
Aged 60–80 | 1.126 | 1.092 to 1.161 | 12.615 | 0 | 1.147 | 1.1 to 1.195 | 14.66 | 0 |
Aged >80 | 1.311 | 0.986 to 1.744 | 31.086 | 0.063 | 1.44 | 1.076 to 1.927 | 43.996 | 0.014 |
Arthrodesis (all) | 1.01 | 0.979 to 1.043 | 1.039 | 0.52 | 1.107 | 1.046 to 1.171 | 10.684 | 0 |
Aged 20–40 | 0.976 | 0.899 to 1.06 | −2.359 | 0.57 | 1.08 | 0.98 to 1.19 | 8.013 | 0.119 |
Aged 40–60 | 1.016 | 0.981 to 1.052 | 1.619 | 0.367 | 1.138 | 1.058 to 1.225 | 13.846 | 0.001 |
Aged 60–80 | 1.01 | 0.938 to 1.088 | 1.025 | 0.787 | 1.064 | 0.941 to 1.202 | 6.367 | 0.323 |
Aged >80 | 1.168 | 0.921 to 1.48 | 16.786 | 0.199 | 1.266 | 1.066 to 1.503 | 26.563 | 0.007 |
Spinal surgery (all) | 1.067 | 1.054 to 1.08 | 6.686 | 0 | 1.1 | 1.076 to 1.125 | 10.017 | 0 |
Aged 20–40 | 1.007 | 0.976 to 1.039 | 0.676 | 0.675 | 1.07 | 1.019 to 1.125 | 7.049 | 0.007 |
Aged 40–60 | 1.048 | 1.035 to 1.06 | 4.768 | 0 | 1.07 | 1.047 to 1.093 | 6.966 | 0 |
Aged 60–80 | 1.091 | 1.08 to 1.102 | 9.109 | 0 | 1.167 | 1.13 to 1.206 | 16.744 | 0 |
Aged >80 | 1.182 | 1.092 to 1.28 | 18.199 | 0 | 1.237 | 0.829 to 1.846 | 23.683 | 0.298 |
OS, orthopaedic surgery; SpA, spondyloarthritis; THA, total hip arthroplasty; TKA, total knee arthroplasty; ULA, upper limb arthroplasty.