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Table 1 Baseline characteristics of study participants

From: Virtual colonoscopy, optical colonoscopy, or fecal occult blood testing for colorectal cancer screening: results of a pilot randomized controlled trial

Characteristics FOBT Optical Colonoscopy Virtual Colonoscopy P*
(N = 67) (N = 66) (N = 65)  
Age, years, mean (SD) 58.7 (5.4) 58.4 (5.6) 59 (5.6) 0.77
Female 31 (46) 25 (38) 38 (58) 0.06
Colorectal cancer in first degree relative(s) 9 (13) 9 (14) 8 (12) 0.97
Signs or symptoms     
 Change in bowel habit 4 (6) 1 (2) 1 (2) 0.23
 Blood in stool 3 (4) 0 (0) 1 (2) 0.18
 Abdominal pain 0 (0) 0 (0) 0 (0) 1.00
 >10 % weight loss in past 6 months 0 (0) 0 (0) 0 (0) 1.00
 Unexplained anemia 0 (0) 0 (0) 0 (0) 1.00
Smoking history     
 Never 36 (54) 34 (51) 29 (45) 0.63
 Former 27 (40) 25 (38) 30 (46)  
 Current 4 (6) 7 (11) 6 (9)  
  1. Data are reported as number (percent) unless otherwise indicated. FOBT, fecal occult blood testing
  2. *P value is for comparison of means or proportions across the 3 groups using one-way analysis of variance or chi-squared tests, respectively