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Table 2 Medical student-reported knowledge regarding the effectiveness of screening methods and risk factors for CRC* (N = 581)

From: Knowledge, attitude, and perceived barriers regarding colorectal cancer screening practices and risk factors among medical students in Saudi Arabia

Knowledge variable (μknowledge score = 10.98 ± 3.64)
Effectiveness of screeningVery effectiveSomewhat effectiveNot effective\don’t know
N (%)N (%)N (%)
Fecal Occult Blood test174 (29.95)233 (40.10)174 (29.95)
Colonoscopy353 (60.76)149 (25.65)79 (13.60)
Sigmoidoscopy211 (36.32)207 (35.63)163 (28.06)
Double-contrast barium enema149 (25.65)193 (33.22)239 (41.14)
Risk factorYesNo
N (%)N (%) 
Family history450 (77.59)130 (22.41)
IBD**256 (44.14)324 (55.86)
Lack of physical activity200 (34.48)380 (65.52)
Increasing age393 (67.76)187 (32.24)
Smoking352 (60.96)228 (39.31)
Dietary intake355 (61.10)226 (38.90) 
Male gender283 (48.79)297 (51.21)
Attitude variable (μattitude score = 5.23 ± 2.12)
 Strongly agreeAgreeDisagree/strongly disagree
N (%)N (%)N (%)
Early detection is better366 (63.21)143 (24.70)70 (12.09)
Colonoscopy is embarrassing148 (25.52)154 (26.55)278 (47.93)
Screening gives peace of mind210 (36.14)243 (41.82)128 (22.03)
Willingness to pay for screening168 (28.92)239 (41.14)174 (29.95)
Screening is not beneficial137 (23.62)191 (32.93)252 (43.45)
  1. **CRC, Colorectal Cancer; *IBD: Inflammatory Bowel Disease