Table 2

Clinical characteristics of cohorts

Number of patientsMedian age (95% CI)M:F ratioLength of Barrett’s oesphagus, in cm (95% CI)
Real-time polymerase chain reaction
Normal oesophagus1062 (56 to 59)1.5:1
Barrett’s oesophagus1065 (61 to 68)2:18.3 (6 to 10)*
Gastric mucosa1063 (56 to 69)1.5:1
Immunohistochemistry
Normal oesophagus2059 (49 to 71)0.8:1
Barrett’s oesophagus2170 (63 to 78)2:14.3 (3.2 to 5.3)
Gastric mucosa2462 (57 to 66)1.5:1
Duodenum1858 (24 to 75)1:1
Capsule sponge
Control patients9960 (58 to 62)1:1
Known Barrett’s4664 (60 to 67)3:16.5 (4.9 to 7.4)
  • *Indicate that the length of the Barrett’s oesphagus samples used for real-time polymerase chain reaction is statistically longer than those for immunohistochemistry (p<0.01).