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Table 1 Population characteristics

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

Characteristic

Hip replacement

Knee replacement

No. of patient

312,079 (48.7)

328,753 (51.3)

Mean (SD) OHS or OKS

17.4 (8.25)

18.3 (7.87)

Mean (SD) EQ-5D

0.33 (0.33)

0.39 (0.32)

Long-standing problems, n (%)

57,827 (18.5)

141,559 (43.1)

Age, mean (range)

68 (18–105)

69 (18–102)

Gender, n (%)

 Male

126,925 (40.7)

140,971 (42.9)

 Female

184,982 (59.3)

187,525 (57.0)

Missing, not stated

172

257

Socioeconomic status by quintile group, n (%)

 1 (least deprived)

74,380 (23.4)

69,582 (21.2)

 2

76,164 (24.4)

74,799 (22.8)

 3

55,793 (17.9)

62,851 (19.1)

 4

52,194 (16.7)

60,177 (18.3)

 5 (most deprived)

50,408 (16.2)

58,327 (17.7)

Missing

3140

3017

Ethnicity, n (%)

 White or White British

271,959 (98.3)

279,159 (94.5)

 Mixed background

546 (0.19)

836 (0.28)

 Asian or Asian British

1239 (0.45)

10,445 (3.53)

 Black or Black British

1703 (0.62)

3347 (1.13)

 Chinese or other ethnic

1150 (0.42)

1706 (0.58)

Missing

35,482

33,260

Chronic disease, n (%)

 Heart disease

53,277 (17.1)

60,755 (18.5)

 High Blood pressure

151,163 (48.4)

187,815 (57.1)

 Stroke

3227 (1.03)

3530 (1.07)

 Leg pain due to poor circulation

5140 (1.65)

4955 (1.51)

 Lung Disease

43,481 (13.9)

51,176 (15.6)

 Diabetes

29,535 (9.46)

44,813 (13.6)

 Kidney Disease

16,428 (5.26)

18,000 (5.48)

 Diseases of the Nervous System

8483 (2.72)

9741 (2.96)

 Liver Disease

1888 (0.60)

1931 (0.59)

 Cancer

6354 (2.04)

5545 (1.69)

 Depression

13,367 (4.28)

14,814 (4.51)

Count of chronic diseases, n (%)

 0

113,479 (36.4)

94,290 (28.7)

 1

107,139 (34.3)

119,012 (36.2)

 2

59,976 (19.2)

75,202 (22.9)

 3

22,929 (7.35)

29,761 (9.05)

 4+

8556 (2.74)

10,488 (3.19)