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Table 1 Baseline of patient characteristics

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

Clinical features Patients (n = 612)
Age (years) 50.4 ± 14.0
Gender  
  Male 315 (51.5%)
  Female 297 (48.5%)
BMI(kg/m2) 22.7 ± 3.7
Grade of education  
  Elementary or below 112 (18.3%)
  High school or above 500 (81.7%)
Marriage status  
  Single 34 (5.6%)
  Married 578 (94.4%)
Smoking 126 (20.6%)
Drinking 136 (22.2%)
Patients type  
  Outpatient 486 (79.4%)
  Inpatient 118 (19.3%)
  Emergency 8 (1.3%)
Previous surgery(abdominal and/or pelvic) 162 (26.5%)
Diverticulosis 10 (1.6%)
HAD 2.6 ± 4.4
VAS 1.5 ± 1.4
Symptoms  
  Constipation 99 (16.2%)
  Abdominal pain 175 (28.6%)
  Diarrhea 98 (16.0%)
  Others 172 (28.2%)
Sleep quality  
  Excellent or good 534 (87.3%)
  Fair or bad 78 (12.7%)
Indication for colonoscopy  
  Screening or surveillance 137(22.4%)
  Diagnosis 475(77.6%)
Interval time from appointment to colonoscopy (days) 8.5 ± 6.9
Purgative type  
  PEG-ELP 550(89.9%)
  SP 62(10.1%)
  1. BMI, body mass index; HAD, Hospital Anxiety and Depression Scale; VAS, Visual Analogue Scale PEG-ELP, polyethylene glycol electrolyte powder; SP, sodium phosphate.