Table 1

Baseline patient characteristics

Chromoendoscopy group (n=66)Narrow band imaging group (n=65)p Value
OR (95% CI)
Age in years (median, IQR (p25–p75))52.5 (43.0–60.0)52.0 (44.5–63.5)0.765
Sex (M:F)40:2633:320.27
1.49 (0.75 to 2.98)
Duration of illness in years (median, IQR (p25–p75))16.0 (11.0–23.3)14.0 (10.5–22.0)0.18
Age of onset in years (median, IQR (p25–p75))34.0 (25.8–42.0)36.0 (27.5–46.5)0.34
Distribution
 Left-sided colitis20 (31%)34 (53%)
 Pan colitis45 (69%)30 (47%)0.01
2.55 (1.24 to 5.24)
PSC761.00
Flares in the past two years (n)6664
 Median (IQR (P25–p75))0.0 (0.0–1.0)0.0 (0.0–1.0)0.54
 None4444
 One814
 Two114
 Three21
 Four01
 Five10
Therapyn=66n=65
 ASA54 (82%)46 (71%)0.14
0.54 (0.24 to 1.23)
 Immunosuppressant22 (33%)15 (23%)0.19
0.60 (0.28 to 1.30)
 Biologicals26 (40%)27 (41%)0.80
1.09 (0.54 to 2.20)
Quality of preparation
  Good39 (59%)47 (72%)0.11
0.55 (0.27 to 1.15)
  Perfect27 (41%)18 (28%)
  • ASA, aminosalicylic acid; PSC,  primary sclerosing cholangitis.