Table 1

Clinical phenotypes of eligible cases with their demographic characteristics and faecal haemoglobin concentrations (for each sample and for the maximum of the two)

Main phenotype
Advanced neoplasia (cancer plus advanced adenoma)CancerAdenomaNo neoplasia
AdvancedNon-advanced
n=4037626 (15.5%)21 (0.5%)605 (15.0%)1199 (29.7%)2212 (54.8%)
Demographic
 Age (years), Median, IQR66.5 (60.9 to 70.6)69.8 (64.0 to 71.1)66.4 (60.7 to 70.6)65.3 (59.1 to 70.2)63.4 (56.0 to 68.9)
 Gender (% male)356 (56.9)10 (47.6)346 (57.2)666 (55.5)992 (44.8)
Faecal haemoglobin by sample context
 First sample (µg/g, median IQR))6.0 (0.8 to 29.9)29.0 (10.0 to 165)5.6 (0.8 to 28.4)3.2 (0.4 to 22.9)1.6 (0 to 20.6)
 Second sample (µg/g, median IQR))6.6 (1.2 to 29.0)126.2 (13.9 to 358.9)5.6 (1.0 to 28.2)3.2 (0.4 to 24.0)1.6 (0 to 20.2)
 Highest of either sample (µg/g, median IQR))22.4 (2.0 to 49.2)155.0 (27.4 to 837.1)21.6 (1.8 to 44.7)11.4 (1.2 to 42.4)4.2 (0.6 to 38.5)