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Table 2 Univariate analysis of factors associated with insertion time duringunsedated colonoscopy

From: Difficult colonoscopy score identifies the difficult patients undergoing unsedated colonoscopy

Variable N Insertion time (min) p value
Age (years)    
  <65 518 7.4 ± 0.3  
  ≥65 94 9.0 ± 0.6 0.020
Gender (male/female)    
  Male 315 7.1 ± 0.3  
  Female 297 8.2 ± 0.4 0.019
BMI (kg/m2)    
  Underweight (<18.5) 68 10.8 ± 1.0  
  Healthy weight (18.5-24.9) 383 7.3 ± 0.3  
  Overweight (25.0-29.9) 145 7.2 ± 0.5  
  Obesity (≥30) 16 6.4 ± 0.9 <0.001
Colonoscopists    
  Senior(n = 9) 414 7.2 ± 0.3  
  Junior(n = 9) 198 8.5 ± 0.4 0.004
Sleep quality    
  Excellent or good 534 7.3 ± 0.2  
  Fair or bad 78 9.7 ± 1.0 0.004
Interval time of appointment to colonoscopy (days)    
  <10 348 8.0 ± 0.3  
  ≥10 264 7.1 ± 0.3 0.065
Smoking    
  Yes 126 7.0 ± 0.5  
  No 486 7.7 ± 0.3 0.089
  1. BMI, body mass index.