Skip to main content
. 2023 Aug 10;17:1586. doi: 10.3332/ecancer.2023.1586

Table 1. Population baseline and treatment characteristics.

Cohort 1: capecitabine Cohort 2: 5-FU
Overall (251), N(%) PPI (51), N(%) Non-PPI (200), N(%) p value Overall (196), N(%) PPI (52), N(%) Non-PPI (144), N(%) p value
Age
Median (range)
≥65 years
Missing

58 (21–90)
83 (33.1)
1 (0.4)

64 (31–90)
25 (49.0)
0

57 (21–89)
58 (29.0)
1 (0.5)
0.05
0.01

59 (22–92)
63 (32.1)
0

59 (29–84)
17 (32.7)
0

60 (22–92)
46 (31.9)
0

0.96
1.00
Sex
 Female
 Male

103 (41.0)
148 (59.0)

30 (58.8)
21 (41.2)

73 (36.5)
127 (63.5)
0.006
80 (40.8)
116 (59.2)

26 (50.0)
26 (50.0)

54 (37.5)
90 (62.5)
0.14
ECOG
 0
 ≥ 1
 Missing

83 (33.1)
164 (65.3)
4 (1.6)

11 (21.6)
39 (76.5)
1 (1.9)

72 (36.0)
125 (62.5)
3 (1.5)
0.65
131 (66.8)
64 (32.6)
1 (0.8)

31 (59.6)
21 (40.4)
0

100 (69.4)
43 (29.9)
1 (0.7)
0.23
Comorbidities 149 (59.4) 31 (60.8) 118 (59.0) 0.87 143 (73.0) 40 (76.9) 103 (71.5) 0.58
clinical stage
 II
 III

50 (19.9)
201 (80.1)

12 (23.5)
39 (76.5)

38 (19.0)
162 (81.0)
0.56
44 (22.4)
152 (77.6)

12 (23.1)
40 (76.9)

32 (22.2)
112 (77.8)
1.00
Localisation
 Distal
 Middle
 Upper
 Missing

134 (53.4)
99 (39.4)
15 (6.0)
3 (1.2)

31 (60.8)
17 (33.3)
3 (5.9)
0

103 (51.5)
82 (41.0)
12 (6.0)
3 (1.5)
0.54
113 (57.7)
74 (37.7)
9 (4.6)
0

29 (55.8)
20 (38.5)
3 (4.6)
0

84 (58.3)
54 (37.5)
6 (4.2)
0
0.87
Differentiation
 Well/moderate
 Poor
 Missing

206 (82.1)
35 (13.9)
10 (4.0)

44 (86.3)
5 (9.8)
2 (3.9)

162 (81.0)
30 (15.0)
8 (4.0)
0.49
175 (89.3)
12 (6.1)
9 (4.6)

42 (80.8)
6 (11.5)
4 (7.7)

133 (92.3)
6 (4.2)
5 (3.5)
0.08
CAPOX TNT 46 (18.3) 2 (5.3) 35 (17.5) 0.54 - - - -
radiotherapy
 2D
 3D
 IMRT
 Short course
 Missing

1 (0.3)
185 (73.7)
30 (12.0)
25 (10.0)
10 (4.0)

0
34 (66.6)
6 (11.8)
9 (17.6)
2 (4.0)

1 (0.5)
151 (75.5)
24 (12.0)
16 (8.0)
8 (4.0)
0.21
5 (2.5)
176 (89.8)
15 (7.7)
0
0

1 (1.9)
50 (96.2)
1 (1.9)
0
0

4 (2.8)
126 (87.5)
14 (9.7)
0
0
0.18
ΔT Neo-TME
 (median, weeks)
 Neo ending
 RT ending

13
(11.4–14.6)
14
(12.4–15.6)

13
(9.5–16.5)
16
(14.3–17.7)

12
(10.9–13.1)
13
(11.6–14.4)

0.35
0.85

-
10 (9.6–10.4)

-
11 (9.7–12.3)

-
10 (9.6–10.4)

0.10
Adjuvant therapy
 None
 Capecitabine
 CAPOX
 5-FU
 FOLFOX
 Missing

85 (33.9)
62 (24.7)
64 (25.5)
0
38 (15.1)
2 (0.8)

18 (35.3)
14 (27.5)
15 (29.4)
0
4 (7.8)
0

67 (33.5)
48 (24.0)
49 (24.5)
0
34 (17.0)
2 (1.0)
0.42
54 (27.6)
10 (5.1)
12 (6.1)
34 (17.3)
86 (43.9)
0

16 (30.8)
4 (7.7)
2 (3.8)
12 (23.1)
18 (34.6)
0

38 (26.4)
6 (4.2)
10 (6.9)
22 (15.3)
68 (47.2)
0
0.34

PPI: proton-pump inhibitors; y: years; CAPOX: capecitabine + oxaliplatin; TNT: total neoadjuvant therapy; IMRT: intensity modulated radiotherapy; ΔT: median time; Neo: neoadjuvant therapy ending; RT: radiotherapy: TME: total mesorectal excision; FOLFOX: 5-Fluorouracil + oxaliplatin

The bold values represent statistical significant differences in baseline characteristics between PPI and non-PPI groups