Prevalence and features of fatty liver detected by physical examination in Guangzhou

Table 2 Age and sex distribution of overall fatty liver prevalence

Age (yr)	All patients	Patients with fatty liver	Overall prevalence	Prevalence in males	Prevalence in females	χ2	P value
18-19	17	1	5.80%	7.10%	0.00%	-	-
20-29	1055	55	5.20%	6.40%	2.30%	7.47	0.006
30-39	1003	206	20.50%	26.70%	8.70%	44.80	< 0.001
40-49	799	212	26.50%	34.50%	16.80%	31.78	< 0.001
50-59	331	123	37.20%	35.90%	39.00%	0.32	0.569
60-69	147	58	39.50%	37.80%	42.10%	0.27	0.601
≥ 70	81	22	27.10%	24.50%	32.10%	0.54	0.464
Total	2605	677	26.00%	32.50%	15.30%	95.18	< 0.001