. Author manuscript; available in PMC: 2014 Jan 20.

Published in final edited form as: Gastroenterology. 2008 May 7;135(2):370–379. doi: 10.1053/j.gastro.2008.04.036

Table 1.

Baseline Characteristics in PDT and Control Groups

Variable	PDT group (N = 71)	Control group (N = 55)	P value
Mean age, y (SD)	67.4 (10.3)	67.5 (11.3)	.86^a
Male sex, N (%)	65 (91)	48 (87)	.43
Mean BE segment length, cm (SD)	5.5 (3.3)	4.9 (3.4)	.20^#
EMR before PDT, N (%)	59 (83)	50 (91)	.20
P16 allelic loss, N (%)	25 (35)	15 (27)	.34
P53 allelic loss, N (%)^b	14 (21)	20 (38)	.04
C-MYC gain, N (%)	33 (47)	25 (45)	.85
HER2-NEU gain, N (%)	16 (23)	17 (31)	.33
20q13.2 gain, N (%)	24 (34)	21 (38)	.65
Multiple gains, N (%)	25 (35)	22 (40)	.62

Obtained using the Kruskal–Wallis test; remaining P values obtained using the chi-square test.

Data available for 120 patients.