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. 2003 Oct 6;3:26. doi: 10.1186/1471-2407-3-26

Table 4.

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

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]
Less
More
54
52
>60 39
42
NR 14
23
54
59
Ohlsson
1995
[37]
Less
More
54
53
82 33
32
NR 17
29
67
75
Kjeldsen
1997
[38]
Less
More
307
290
>60 26
26
3
7
NR 68
70
Schoemaker
1998
[39]
Less
More
158
167
>60 NR 5
3
NR 70
76
Pietra
1998
[40]
Less
More
103
104
>60 19
25a
1
0
10
65
58
73b
Secco
2002
[41]
Less
More
145
192
>60 53
57
NR 16
31
48
63

Note: NR, not reported. a p < 0.01 b p < 0.05