Table 1

Numbers of “valid” and “invalid” requests at each organ site

OesophagealGastricDuodenalColonoscopic
N%N%N%N%
Total requests184286378966
Valid requests12769.010837.836496.389192.2
Invalid requests5630.417561.220.5646.6
No clinical details given10.631.0133.2111.1
Clinically relevant abnormalities in invalid requests3001