norccag audit report 2011: mortality, survival and reconstructive rectal surgery david w borowski...
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NORCCAG audit report 2011:mortality, survival and reconstructive
rectal surgery
David W Borowski
for the members of the Northern Region Colorectal Cancer Audit Group (NORCCAG)
Mortality & Survival1 August 2007 – 31 July 2010
Abdominal resective surgery (n=3,526)Excluding TEMS, polypectomy, stoma only
operations and per-anal excisions
Patient-related factors
9 Cancer units Individual surgeons (mortality)
> 20 CRC operations p.a.Pooled for low-volume surgeons
Mortality & SurvivalElective mortality
< 7 %
Emergency mortality< 20 %
Colorectal specialistsMDT membership (2-3 surgeons / 200,000)Caseload (>20 curative resections / year)
Mortality 169/3,526 (4.8%)Deaths % p*
Sex 0.251
Female 63 4.3
Male 106 5.1
Age <0.001
< 65 18 1.6
65-74 39 3.7
75-84 76 8.0
≥ 85 17 9.2
Unknown 19 9.5
ASA grade <0.001
I 2 0.5
II 32 2.1
III 70 7.6
IV 29 23.8
V 3 75.0
unknown 33 6.0
Deaths % p*
Tumour site 0.011
Right colon 82 6.2
Left colon 50 4.1
Rectum 37 3.8
Dukes’ stage <0.001
A 17 2.9
B 56 4.9
C 54 4.7
“D” 26 10.4
Unknown 16 4.0
Urgency <0.001
Elective / planned 96 3.4
Emergency / urgent 57 12.6
Unknown 16 7.5
Mortality 169/3,526 (4.8%)OR 95% CI p
Sex
Female 1.0
Male 1.31 0.93 – 1.84 0.124
Age
< 65 1.0
65-74 1.84 1.03 – 3.31 0.041
75-84 3.84 2.22 – 6.66 <0.001
≥ 85 3.01 1.44 – 6.28 0.003
Unknown 4.24 2.11 – 8.55 <0.001
ASA grade
I 1.0
II 2.81 0.67 – 11.83 0.159
III 7.47 1.79 – 31.1 0.006
IV 22.63 5.18 – 98.95 <0.001
V 203.18 13.0 – 3,18 <0.001
unknown 6.30 1.48 – 26.74 0.013
OR 95% CI p
Tumour site
Right colon 1.0
Left colon 0.84 0.57 – 1.24 0.384
Rectum 1.07 0.69 – 1.68 0.751
Dukes’ stage
A 1.0
B 1.28 0.71 – 2.28 0.410
C 1.26 0.70 – 2.24 0.442
“D” 2.59 1.30 – 5.16 0.007
Unknown 1.36 0.66 – 2.80 0.400
Urgency
Elective / planned 1.0
Emergency / urgent 2.45 1.65 – 3.65 <0.001
Unknown 1.90 1.05 – 3.46 0.035
Cancer unitsUnit All resections Elective Emergency
Deaths Resections % Deaths Resections % Deaths Resections %
1 8 343 2.3 6 284 2.1 1 37 2.7
2 32 554 5.8 14 451 3.1 13 63 20.6
5 25 402 6.2 9 318 2.8 15 80 18.8
7 31 550 5.6 22 473 4.7 7 60 11.7
9 16 294 5.4 9 245 3.7 6 37 16.2
10 20 451 4.4 12 339 3.5 6 56 10.7
11 9 222 4.1 6 183 3.3 3 24 12.5
12 13 289 4.5 9 241 3.7 3 44 6.8
13 15 421 3.6 9 326 2.8 3 53 5.7
All 169 3526 4.8 96 2860 3.4 57 454 12.6
Consultant teamsConsultant All resections Elective Emergency
Code Deaths Resections % Deaths Resections % Deaths Resections %
172 10 145 6.9 5 124 4.0 4 14 28.6
2359 4 73 5.5 4 66 6.1 0 3 0.0
3025 0 68 0.0 0 58 0.0 0 5 0.0
3140 5 102 4.9 3 97 3.1 1 2 50.0
5436 6 67 9.0 6 62 9.7 0 4 0.0
-//- -//- -//- -//- -//- -//- -//- -//- -//- -//-
27271 3 92 3.3 2 80 2.5 0 11 0.0
28144 2 71 2.8 2 59 3.4 0 9 0.0
Pool 65 1287 5.1 23 999 2.3 34 202 16.8
missing 16 263 6.1 9 209 4.3 6 42 14.3
Total 169 3526 4.8 96 2860 3.4 57 454 12.6
Consultant information
92.599.710099.599.3
22.5
98.799.799.294.7
0%
20%
40%
60%
80%
100%
1 2 5 7 9 10 11 12 13 Total
Cancer Unit
Consultant details available Consultant details NOT available
2-year Survival 79.1%
Days survival
8007006005004003002001000
% S
urv
ival
1.0
.9
.8
.7
.6
.5
Survival
Censored
2-year Survival 79.1%
Days survival
8007006005004003002001000
% S
urv
ival
1.0
.9
.8
.7
.6
.5
.4
Dukes stage
unknown
unknown-censored
Dukes' D
Dukes' D-censored
Dukes' C
Dukes' C-censored
Dukes' B
Dukes' B-censored
Dukes' A
Dukes' A-censored
Cancer unitsUnit All resections Elective Emergency
Deaths Alive* % OS Deaths Alive* % OS Deaths Alive* % OS
1 44 99 79.5 33 75 80.4 7 10 72.5
2 86 156 80.1 49 132 85.6 23 7 52.1
5 51 112 84.6 22 102 91.3 27 8 60.7
7 93 160 77.4 71 144 79.3 18 12 62.7
9 42 60 82.5 28 46 85.0 13 5 62.3
10 87 116 72.8 48 72 78.8 16 13 59.9
11 48 57 71.9 31 42 76.2 15 2 29.9
12 35 69 83.3 20 60 88.3 13 8 61.4
13 58 105 80.4 33 67 84.7 16 5 57.4
All 544 934 79.1 335 740 83.3 148 70 57.9
* Numbers at risk remaining in the analysis at 2 years, excluding censored patients
Rectal restoration1 April 2006 – 31 July 2010
n=2,217 RC patients1,752 (79.0%) surgery
1,334 (76.1%) abdominal resections
< 30 % APER (+ Hartmanns)
Rectal surgery (n=1,752)Operation Abdominal resection Local Excision No resection Unknown
Anterior Resection 322 (24.1%)
Anterior Resection & covering stoma 490 (36.7%)
APER 342 (25.6%)
Hartmanns 100 (7.5%)
Panproctocolectomy 16 (1.2%)
Per-anal Excision / Polypectomy /
TEMS 88 (100%)
Stoma only 86 (42.3%)
Stent 28 (13.7%)
Other 64 (4.8%) 89 (43.8%)
Not given 127 (100%)
All 1,334 88 203 127
Rectal surgery (n=1,752)
76.173.765.7
86.772.7
84.483.079.574.473.2
11.613.1
16.9
8.0
8.3
9.48.58.6
14.415.0
7.21.513.4
3.517.8
3.15.41.15.69.2
0%
20%
40%
60%
80%
100%
1 2 5 7 9 10 11 12 13 Total
Cancer Unit
Abdominal resection Local excisionNo resection Operative data missing
Rectal surgery (n=1,334)
73.2 68.377.6
60.5 60.549.4
62.2 61.471.2
64.7
35.328.8
38.637.850.6
39.539.5
22.431.726.8
0%
20%
40%
60%
80%
100%
1 2 5 7 9 10 11 12 13 Total
Cancer Unit
Restorative rectal resection Permanent stoma formation
SummaryOperative mortality rates vary throughout the region between
surgeons and cancer units, but are generally within the accepted range
2-year survival rates also show variation between cancer units
Rates of rectal restoration vary greatly between cancer units, and appear to be outside the recommended minimum of 70% in some units
Inaccurrate and incomplete data collection complicates, and potentially biases, the data analysis