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Table 2 Patients' clinical characteristics and response by procedure

From: Factors associated with non-response in routine use of patient reported outcome measures after elective surgery in England

   Hip replacement Knee replacement Hernia repair VV surgery
   n (%) Responded% n (%) Responded% n (%) Responded% n (%) Responded%
Previous surgery No 33,738 (89.7) 85.7 40,468 (91.9) 85.9 30,318 (87.3) 73.0 8,530 (61.0) 63.4
  Yes 3,882 (10.3) 80.2 3,560 (8.1) 79.8 4,399 (12.7) 73.2 5,459 (39.0) 67.0
  missing 341   394   247   111  
Duration of 0-5 years 30,039 (79.9) 86.0 25,138 (57.1) 86.2 21,960 (63.3) 75.0 3,702 (26.6) 59.0
symptoms* > 5 years 7,549 (20.1) 81.7 18,916 (42.9) 84.2 12,722 (36.7) 69.5 10,234 (73.4) 67.0
  missing 373   368   282   164  
Comorbidities none 16,125 (42.5) 85.9 16,058 (36.3) 86.2 18,066 (51.7) 67.6 7,925 (56.2) 62.6
  1 13,556 (35.7) 86.0 16,574 (37.3) 86.1 9,983 (28.5) 78.1 3,756 (26.6) 66.3
  2 5,804 (15.3) 83.3 8,040 (18.1) 84.6 4,337 (12.4) 80.9 1,445 (10.3) 70.9
  3 or more 2,476 (6.5) 78.8 3,750 (8.4) 79.7 2,578 (7.4) 76.8 974 (6.9) 68.1
  missing 0   0   0   0  
Procedure specific Worst 14,122 (37.5) 80.5 16,617 (37.7) 80.0 - - 4,621 (33.3) 62.6
health status by Middle 10,982 (29.2) 86.5 13,706 (31.1) 87.4 - - 4,622 (33.3) 65.4
tertile Best 12,541 (33.3) 89.2 13,725 (31.2) 89.7 - - 4,622 (33.3) 66.8
  missing 316   374   - - 235  
EQ5D index by Worst QoL 13,062 (36.3) 80.7 16,498 (39.2) 81.3 12,957 (38.3) 69.1 4,620 (34.4) 60.1
tertile Middle 11,559 (32.1) 86.4 21,514 (51.1) 87.9 9,894 (29.3) 75.3 5,503 (40.9) 66.1
  Best QoL 11,361 (31.6) 89.5 4,059 (9.7) 89.8 10,960 (32.4) 75.6 3,319 (24.7) 70.4
  missing 1,979   2,351   1,153   658  
  1. *up to 1 year and > 1 year for groin hernia; QoL = quality of life