Table 1

Result of logistic regression analysis evaluating the association between patient feature and likelihood of having surgery (n=95 818)

No. of patients (%)No. of patients with surgery (%)Unadjusted OR (95% CI)Adjusted OR (95% CI)*χ2 p value for trends
Sex
 Female41 744 (43.57)5833 (13.97)11 
 Male54 074 (56.43)6926 (12.81)0.90 (0.87 to 0.93)0.94 (0.89 to 0.98)0.018†
Age
 <545937 (6.20)1049 (17.67)11 
 55–596282 (6.56)1134 (18.05)1.02 (0.93 to 1.12)1.01 (0.89 to 1.14) 
 60–6411 220 (11.71)2066 (18.41)1.05 (0.96 to 1.14)0.91 (0.81 to 1.01) 
 65–6914 179 (14.80)2614 (18.44)1.05 (0.97 to 1.13)0.92 (0.83 to 1.02) 
 70–7416 560 (17.28)2689 (16.24)0.90 (0.83 to 0.97)0.77 (0.69 to 0.85) 
 75–7916 806 (17.54)2082 (12.39)0.65 (0.60 to 0.71)0.55 (0.49 to 0.61) 
 80–8414 073 (14.69)940 (6.68)0.33 (0.30 to 0.36)0.25 (0.22 to 0.28) 
 85+10 761 (11.23)185 (1.72)0.08 (0.06 to 0.09)0.06 (0.05 to 0.08)<0.001
Stage
 IA–IB11 284 (11.78)6189 (54.85)11 
 IIA–IIB5686 (5.93)2392 (42.07)0.59 (0.56 to 0.63)0.54 (0.50 to 0.58) 
 IIIA9249 (9.65)1448 (15.66)0.15 (0.14 to 0.16)0.10 (0.09 to 0.11) 
 IIIB11 697 (12.21)474 (4.05)0.03 (0.03 to 0.04)0.02 (0.02 to 0.03) 
 IV39 505 (41.23)599 (1.52)0.01 (0.01 to 0.02)0.01 (0.01 to 0.01)<0.001
 Missing18 397 (19.20)1657 (9.01)0.08 (0.07 to 0.08)0.07 (0.07 to 0.08) 
Performance status
 015 357 (16.03)5245 (34.15)11 
 124 945 (26.03)4461 (17.88)0.41 (0.40 to 0.43)0.49 (0.46 to 0.52) 
 216 368 (17.08)769 (4.70)0.09 (0.08 to 0.10)0.12 (0.11 to 0.14) 
 315 377 (16.05)138 (0.90)0.01 (0.01 to 0.02)0.03 (0.02 to 0.03) 
 45168 (5.39)16 (0.31)0.01 (0.01 to 0.01)0.02 (0.01 to 0.03)<0.001
 Missing18 603 (19.41)2130 (11.45)0.24 (0.23 to 0.26)0.36 (0.34 to 0.39) 
Ethnicity
 Caucasian60 396 (63.03)8173 (13.53)11 
 Black patients683 (0.71)98 (14.35)1.07 (0.86 to 1.32)1.15 (0.86 to 1.53) 
 Asian827 (0.86)120 (14.51)1.08 (0.89 to 1.31)1.10 (0.85 to 1.43) 
 Mixed107 (0.11)17 (15.89)1.20 (0.71 to 2.02)0.97 (0.48 to 1.94) 
 Others737 (0.77)100 (13.57)1.00 (0.81 to 1.24)1.15 (0.87 to 1.53) 
 Missing33 068 (34.51)4251 (12.86)0.94 (0.90 to 0.98)0.93 (0.89 to 0.99)0.435†
Townsend quintile
 1 (most affluent)14 975 (15.63)2158 (14.41)11 
 217 837 (18.62)2444 (13.70)0.94 (0.88 to 1.00)0.89 (0.82 to 0.97) 
 318 839 (19.66)2492 (13.23)0.90 (0.85 to 0.96)0.84 (0.78 to 0.92) 
 420 332 (21.22)2645 (13.01)0.88 (0.83 to 0.94)0.83 (0.76 to 0.90) 
 521 966 (22.92)2935 (13.36)0.91 (0.86 to 0.97)0.80 (0.74 to 0.87)<0.001
 Missing1869 (1.95)85 (4.55)0.28 (0.22 to 0.35)0.44 (0.34 to 0.58) 
Charlson Index
 029 509 (30.80)4830 (16.37)11 
 119 001 (19.83)3292 (17.33)1.07 (1.01 to 1.12)1.01 (0.95 to 1.08) 
 2–317 418 (18.18)2721 (15.62)0.94 (0.89 to 0.99)0.99 (0.95 to 1.06) 
 4+29 890 (31.19)1916 (6.41)0.34 (0.33 to 0.36)0.78 (0.73 to 0.84)0.003
Source of referral
 Referral from GP45 465 (47.45)7167 (15.76)11 
 Emergency adm.11 991 (12.51)480 (4.00)0.22 (0.20 to 0.24)0.54 (0.48 to 0.60) 
 Ref. from consultant20 137 (21.02)3295 (16.36)1.04 (0.99 to 1.09)1.12 (1.05 to 1.19) 
 Other sources16 115 (16.82)1564 (9.71)0.57 (0.54 to 0.60)0.87 (0.81 to 0.94)<0.001†
 Missing2110 (2.20)253 (11.99)0.72 (0.63 to 0.83)0.85 (0.72 to 1.01) 
  • *Odd ratio adjusted for every other variable in the table.†Log likelihood ratio test.

  • GP, general practioner.