Prevalence of subclinical hepatic encephalopathy in cirrhotic patients in China

Table 2 Results of SDT in 3 groups

Age (yr)	Control		Hepatitis		Cirrhosis
	n	Mean ± SD	n	Mean ± SD	n	Mean ± SD
</=34	82	12.5 ± 2.2	176	12.7 ± 3.1	52	10.8 ± 2.8a
35-44	76	11.9 ± 1.7	114	12.3 ± 3.5	73	9.4 ± 2.7a
45-54	74	12.8 ± 2.3	71	12.3 ± 2.2	107	8.9 ± 2.5a
55-64	69	11.9 ± 2.1	35	11.5 ± 1.6	87	7.8 ± 2.5a
>/=65	54	12.7 ± 2.4	20	9.0 ± 2.2	90	6.7 ± 2.3a
Total	356	12.2 ± 2.3	416	12.2 ± 3.1	409	8.5 ± 2.8a

^aP < 0.05 vs normal control and chronic hepatitis.