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. Author manuscript; available in PMC: 2014 Jul 8.
Published in final edited form as: J Am Coll Surg. 2012 May 18;215(1):41–52. doi: 10.1016/j.jamcollsurg.2012.03.024

Table 1.

Patient Demographics of Study Population

Variable All
patients, n
= 88
Unresectable
at referral, n
= 7
Metastasis
before
resection, n =
15
Successfully resected,
n = 66
p Value

Sex, n (%)
 Female 43 (49) 2 (29) 10 (67) 31 (47) NS
 Male 45(51) 5 (71) 5 (33) 35 (53)

Race, n (%)
 Caucasian 74 (85) 7 (100) 12 (80) 55 (83)
 African-American 2 (2) 0 (0) 1 (7) 1 (15) NS
 Hispanic 9 (10) 0 (0) 2 (13) 7 (11)
 Asian 2 (2) 0 (0) 0 (0) 2 (3)
 Other 1 (1) 0 (0) 0 (0) 1 (1.5)

Age at referral, y NS
 Mean 58.1 54.9 56.3 58.8
 SD 11.6 17.2 9.7 11.4

Time interval from first
resection attempt to
referral/re-staging, d
 Mean 44.3 31.1 58.4 42.5 NS
 SD 28.7 14.1 26.9 29.3

Previous center, n (%)
 Academic 50 (57) 3 (43) 6 (40) 41 (62)
 Community 25 (28) 4 (57) 4 (27) 17 (26) NS
 International 13 (15) 0 (0) 5 (33) 8 (12)

Previous biliary/GI bypass, n
(%)
NS
 No 23 (26) 3 (43) 4 (27) 16 (24)
 Yes 65 (73) 4 (57) 11 (73) 50 (76)

Neoadjuvant therapy before
second resection attempt, n (%)
NS
 No 2 (13) 5 ( 8)
 Yes 13 (87) 61 (92)

Initial CA19-9
 Mean 299 824 120.5 303.2 NS
 SD 773.8 617 97 817

Preop CA19-9
 Mean 106.6 - 96.3 113.2 NS
 SD 191.8 82.3 211

Fold-change in CA19-9
 Mean 0.69 - 0.97 0.68 NS
 SD 0.63 0.74 0.65

Time interval from first to
second resection attempt,
mo
 Mean 5.6 5.8 NS
 SD 2.7 4.1