Table 1

Characteristics of patients according to the surgeon class (high-volume or not)
Total N = 3928 High-volume surgeon N = 2931 Others N = 997 P for heterogeneity
N % N % N %
Individual data
Age
< 50 years old 946 24.1 702 23.9 244 24.5 <0.001
50 to 74 years old 2438 62.1 1857 63.4 581 58.3
> 74 years old 544 13.8 372 12.7 172 17.2
Circumstances of diagnosis
Screening 1907 51.1 1501 53.2 406 44.8 <0.001
Not screening 1823 48.9 1323 48.8 500 55.2
Unknown 198
T Stage - size
T1 2875 75.7 2185 77.1 690 71.6 <0.001
T2 767 20.2 548 19.3 219 22.7
T3 and T4 156 4.1 101 3.6 55 5.7
Unknown 130
N Stage - nodes
N0 2591 68.2 1936 68.2 655 68.1 0.962
N1 and more 1211 31.8 904 31.8 307 31.9
Unknown 126
M Stage - metastasis
M0 3809 98.2 2843 98.3 966 98.0 0.500
M1 69 1.8 49 1.7 20 2.0
Unknown 50
At least one comorbidity
Yes 861 21.9 627 21.4 234 23.5 0.171
No 3067 78.1 2304 78.6 763 76.5
Time to the nearest reference cancer care centre
< 10 minutes 1153 29.3 917 31.3 236 23.7 <0.001
10 to 20 minutes 1049 26.7 831 28.4 218 21.8
20 to 35 minutes 599 15.3 438 14.9 161 16.2
> 35 minutes 1127 28.7 745 25.4 382 38.3
Aggregate data
Place of residence
Rural 1067 27.2 746 25.5 321 32.2 <0.001
Urban 2860 72.8 2184 74.5 676 67.8
Unknown 1
Townsend index
Quintile 1 (most affluent) 323 8.2 260 8.9 63 6.3 0.021
Quintile 2 557 14.2 432 14.8 125 12.5
Quintile 3 484 12.3 363 12.4 121 12.1
Quintile 4 722 18.4 531 18.1 191 19.2
Quintile 5 (most deprived) 1839 46.9 1342 45.8 497 49.9
Unknown 3

Gentil et al.

Gentil et al. BMC Cancer 2012 12:351   doi:10.1186/1471-2407-12-351

Open Data