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. 2017 Mar 22;12(3):e0174155. doi: 10.1371/journal.pone.0174155

Table 2. Predicting factors associated with the presence of colorectal polyp.

n = 880 Polyp not detected
n = 626
Polyp detected
n = 254
Univariable Multivariable
p value OR (95% C. I.) p value
Age (years), (SD) n = 626 56.5(11.9) n = 254 61.1(10.2) 0.000 1.036 (1.022, 1.050) 0.000
Male, gender, n (%) n = 626 411(65.7) n = 254 197(77.6) 0.001 1.771 (1.250, 2.509) 0.001
Past abdominal operation (yes), n (%) n = 626 131(20.9) n = 254 53(20.9) 0.984
Previous examination (yes), n (%) n = 626 353 (56.4) n = 254 155(61.0) 0.207
Bowel preparation quality (excellent, good, fair), n (%) n = 568 550 (96.8) n = 238 235(98.7) 0.121
Sedation, (yes), n (%) n = 626 612 (97.8) 254 250 (98.4) 0.530
Insertion time (min), (SD) n = 437 6.5 (4.3) n = 170 6.1(3.0) 0.149
Withdrawal time (min), (SD) n = 624 5.2 (1.9) n = 254 6.1(2.3) 0.000 1.217 (1.127, 1.314) 0.000