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Table 1 Characteristics of study participants (N = 12,679)

From: The association between cecal insertion time and colorectal neoplasm detection

Characteristic N available % missing Number (%) or mean ± SD
Age, years 12,679 0.0 53.4 ± 7.3
40-49    4,215 (33.2)
50-59    5,882 (46.4)
60-69    2,296 (18.1)
70-79    286 (2.3)
Male sex 12,679 0.0 7,975 (62.9)
Body mass index, kg/m2 12,091 4.6 24.2 ± 2.8
Waist circumference, cm 10,803 14.8 84.1 ± 8.8
Family history of colorectal cancer 12,679 0.0 458 (3.6)
History of colorectal polyp 11,188 11.8 2,030 (18.1)
Diabetes mellitus 11,237 11.4 975 (8.7)
Hyperlipidemia 11,189 11.8 2,155 (19.3)
Aspirin use 10,878 14.2 1,529 (14.1)
NSAIDs use 10,878 14.2 321 (3.0)
Calcium use 10,917 13.9 1,033 (9.5)
Currently consumes alcohol 11,144 12.1 7,142 (64.1)
Current smoker 11,406 10.0 2,150 (18.8)
Quality indicators of colonoscopy    
  Insertion time (minutes) 12,260 3.3 5.9 ± 4.4
  Withdrawal time (minutes) 12,239 3.5 9.0 ± 3.9
  Excellent/Good Bowel preparation 11,805 6.9 8,086 (68.5)