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. Author manuscript; available in PMC: 2015 Jan 7.
Published in final edited form as: Clin Colorectal Cancer. 2011 Jul 22;10(4):310–316. doi: 10.1016/j.clcc.2011.06.005

Table 2.

Percentages of Patients With at Least One Colonoscopy Occurring Within the Specified Timeframe, by Length of Follow-Up Time and Treatment Arm

Length of Follow-Up Time on Study (Months)
Calcium Carbonate Placebo
≥ 18
(n = 95)
≥ 42
(n = 87)
≥ 66
(n = 70)
≥ 18
(n = 96)
≥ 42
(n = 86)
≥ 66
(n = 72)
Time from Randomization (Months) > 0 and ≤ 18 7% 77% 80% 74% 71% 74%
> 18 and ≤ 42 53% 54% 48% 46%
> 42 and ≤ 66 20% 26%