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Table 3 Preoperative severity of joint problems (OHS in hip replacement and OKS in knee replacement) and likelihood of long-standing problems by the number of chronic diseases (95% CI, P-value for trend) (adjusted according to age, sex, ethnicity and SES)

From: Access to hip and knee replacement surgery in patients with chronic diseases according to patient-reported pain and functional status

Count of chronic diseases Severity of joint problems (0 worse and 48 best) Functional status (0 worst 24 best) Pain (0 worst 24 best) Long-standing joint problems (duration > 5 years pre-operatively)
Mean score Adjusted difference (95% CI) P-value Mean score Adjusted difference (95% CI) P-value Mean score Adjusted difference (95% CI) P-value % Adjusted OR (95% CI) P-value
Hip replacement:OHS
0 18.8 Reference   10.6 Reference   8.21 Reference   21.3 Reference  
1 17.4 −1.45 (−1.52, −1.38) < 0.001 9.73 −0.79 (−0.83, − 0.76) < 0.001 7.67 − 0.66 (− 0.69, − 0.62) < 0.001 17.3 0.93 (0.91, 0.95) 0.076
2 16.2 −2.79 (− 2.87, − 2.70)   9.03 −1.52 (− 1.56, − 1.47)   7.17 −1.28 (− 1.32, − 1.23)   16.5 0.98 (0.95, 1.00)  
3 14.9 −4.15 (− 4.27, − 4.04)   8.31 − 2.23 (− 2.30, − 2.17)   6.58 − 1.92 (− 1.98, − 1.86)   16.1 1.02 (0.98, 1.06)  
4+ 13.3 −5.79 (− 5.96, − 5.61)   7.42 − 3.13 (− 3.23, − 3.03)   5.89 − 2.66 (− 2.75, − 2.56)   17.5 1.15 (1.09, 1.23)  
Knee replacement:OKS
0 19.5 Reference   12.5 Reference   7.01 Reference   45.7 Reference  
1 18.5 −1.06 (−1.12, −0.99) < 0.001 11.7 −0.72 (− 0.76, − 0.68) < 0.001 6.77 −0.34 (− 0.37, − 0.31) < 0.001 42.2 0.95 (0.93, 0.97) 0.663
2 17.6 −2.16 (− 2.24, − 2.09)   11.0 −1.50 (− 1.51, − 1.42)   6.51 − 0.70 (− 0.73, − 0.67)   41.9 0.97 (0.95, 0.99)  
3 16.5 −3.38 (− 3.48, − 3.28)   10.3 −2.28 (− 2.34, − 2.22)   6.17 − 1.10 (− 1.15, − 1.06)   41.8 0.98 (0.96, 1.01)  
4+ 15.1 −4.79 (− 4.94, − 4.64)   9.39 −3.21 (− 3.31, − 3.11)   5.75 − 1.58 (− 1.64, − 1.51)   41.9 0.99 (0.95, 1.04)