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. 2015 Feb 28;17(6):542–550. doi: 10.1111/hpb.12400

Table 1.

Patient characteristics by treatment group

No RT (N = 5039) N (%) Pre-operative RT (N = 299) N (%) Post-operative RT (N = 3136) N (%)
Year
 2000–2004 1751 (34.7) 91 (30.4) 1364 (43.5)
 2005–2010 3288 (65.3) 208 (79.6) 1772 (56.5)
Age
 18–39 112 (2.2) 2 (0.6) 48 (1.5)
 40–64 1939 (38.5) 179 (59.9) 1672 (53.3)
 65+ 2988 (59.3) 118 (39.5) 1416 (45.2)
Gender
 Male 2418 (48.0) 156 (52.2) 1606 (51.2)
 Female 2621 (52.0) 143 (47.8) 1530 (48.8)
Race
 Non-Hispanic white 4214 (83.6) 249 (83.3) 2680 (85.5)
 Black 549 (10.9) 38 (12.7) 342 (10.9)
 Other or unknown 276 (5.5) 12 (4.0) 114 (3.6)
Tumour size
 <2 cm 604 (12.0) 21 (7.0) 298 (9.5)
 ≥2 cm 4210 (83.5) 259 (86.6) 2701 (86.1)
 Missing 225 (4.5) 19 (6.4) 137 (4.4)
Tumour grade
 1 or 2 2860 (56.8) 141 (47.2) 1834 (58.5)
 3 1594 (31.6) 81 (27.1) 1039 (33.1)
 4 66 (1.3) 3 (1.0) 36 (1.1)
 Missing/unknown 519 (10.3) 74 (24.7) 227 (7.2)
T-stage
 1 and 2 1440 (28.6) 52 (17.4) 653 (20.8)
 3 3411 (67.7) 188 (62.9) 2314 (73.8)
 4 188 (3.7) 59 (19.7) 169 (5.4)
Surgery type
 Whipple 3525 (70.0) 225 (75.3) 2325 (74.1)
 Total pancreatectomy 589 (11.7) 39 (13.0) 327 (10.4)
 Other 925 (18.4) 35 (11.7) 484 (15.4)
Node positive
 No 2295 (45.5) 197 (65.9) 1081 (34.5)
 Yes 2744 (54.5) 102 (34.1) 2055 (65.5)
Nodes examined
 0 236 (4.7) 26 (8.7) 94 (3.0)
 1–9 1930 (38.3) 120 (40.1) 1105 (35.2)
 10–14 1103 (21.9) 78 (26.1) 764 (24.4)
 15+ 1673 (33.2) 68 (22.7) 1109 (35.4)
 Unknown 97 (1.9) 7 (2.3) 64 (2.0)
Registry
 Connecticut 307 (6.1) 22 (7.4) 180 (5.7)
 Metropolitan Detroit 265 (5.3) 55 (18.4) 314 (10.0)
 Iowa 177 (3.5) 20 (6.7) 162 (5.2)
 Seattle (Puget Sound) 224 (4.4) 11 (3.7) 215 (6.9)
 Utah 157 (3.1) 17 (5.7) 71 (2.3)
 Metropolitan Atlanta 188 (3.7) 11 (3.7) 119 (3.8)
 Los Angeles 662 (13.1) 16 (5.4) 215 (6.9)
 Greater California 1228 (24.4) 44 (14.7) 630 (20.1)
 Kentucky 312 (6.2) 14 (4.7) 220 (7.0)
 Louisiana 287 (5.7) 27 (9.0) 217 (6.9)
 New Jersey 806 (16.0) 42 (14.0) 557 (17.8)
 Greater Georgia 426 (8.5) 20 (6.7) 236 (7.5)

Characteristics of patients undergoing surgery without radiation therapy (RT), pre-operative RT and post-operative RT 2000–2010 (N = 8474).