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Table 4 Results of randomized trials of follow-up after resection of colorectal cancer.

From: Follow-up of patients with curatively resected colorectal cancer: a practice guideline

Study, Year [Reference] Follow-up Program intensity Number of Patients Randomized Median Observation (months) Overall Recurrence Rate (%) Number of Second Bowel Cancers Radical Reoperation Rate (%) 5-year Survival Rate (%)
Makela
1995
[36]
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54
52
>60 39
42
NR 14
23
54
59
Ohlsson
1995
[37]
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54
53
82 33
32
NR 17
29
67
75
Kjeldsen
1997
[38]
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307
290
>60 26
26
3
7
NR 68
70
Schoemaker
1998
[39]
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158
167
>60 NR 5
3
NR 70
76
Pietra
1998
[40]
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103
104
>60 19
25a
1
0
10
65
58
73b
Secco
2002
[41]
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145
192
>60 53
57
NR 16
31
48
63
  1. Note: NR, not reported. a p < 0.01 b p < 0.05