Table 4.

Distribution of phenotypes and corresponding CA19‐9 values

Phenotype		No. of values	CA19‐9 value (U·mL−1)				95% CI	One‐way analysis of variance (P value)
			Min	Median	Max	Mean
Lewis	le/le	31	< 0.6	< 0.6	< 0.6	< 0.6	< 0.6	< 0.0001
	Le/le	107	1.39	7.61	30.96	9.373	8.25–10.5
	Le/Le	178	1.72	9.8	96.53	13.07	11.38–14.76
Secretor	se/se	71	0.6	17.8	46.82	17.27	14.89–19.64	< 0.0001
	Se/se	153	0.6	7.38	96.53	9.43	7.71–11.15
	Se/Se	92	0.6	6.495	23.03	7.383	6.41–8.359
Combined	le/se	10	< 0.6	< 0.6	< 0.6	< 0.6	< .6	< 0.0001
	le/Se	22	< 0.6	< 0.6	< 0.6	< 0.6	< 0.6
	Le/se	61	4.94	18.72	46.82	20	17.95–22.05
	Le/Se	224	1.39	7.375	96.53	9.417	8.22–10.62