Table 3.

Comparison of the incidence and variation trend of fatty liver at different degrees before and after intervention in each group (component ratio %)

Prevalence of fatty liver (%)	Group A (N = 23, M/F = 13/10)		Group B (N = 23, M/F = 10/13)		Group C (N = 20, M/F = 9/11)		Group D (N = 20, M/F = 9/11)
	Before intervene	After intervenes	Before intervene	After intervenes	Before intervene	After intervenes	Before intervene		After intervenes
Normal liver (%)	4 (17.39%)	9 (39.13%)	5 (21.74%)	8 (34.78%)	3 (15%)	3 (15%)	19 (95%)		19 (95%)
Mild fatty liver (%)	4 (17.39%)	4 (17.39%)	4 (17.39%)	5 (21.74%)	4 (20%)	5 (25%)	1 (5%)		1 (5%)
Moderately fatty liver (%)	5 (21.74%)	8 (34.78%)	5 (21.74%)	7 (30.43%)	5 (25%)	4 (20%)	0 (0%)		0 (0%)
Severe fatty liver (%)	10 (43.48%)	2 (8.70%)	9 (39.13%)	3 (13.04%)	8 (40%)	8 (40%)	0 (0%)		0 (0%)
Mann–Whitney rank sum test U value	ZA-B = -0.369 ZA-C = -0.090 ZA-D = -4.966	Za-b = -0.26 Za-c = -2.077 Za-d = -3.841	ZB-C = -0.280 ZB-D = -4.736	Zb-c = -1.823 Zb-d = -4.047	ZC-D = -4.967	Zc-d = 0.000	Person X2 = 45.240		Person X2 = 31.402
Rank sum test, asymptotic significance P value	PA-B = 0.712 PA-C = 0.929 PA-D = 0.000	Pa-b = 0.791 Pa-c = 0.038 Pa-d = 0.000	PB-C = 0.779 PB-D = 0.000	Pb-c = 0.068 Pb-d = 0.000	PC-D = 0.000	Pc-d = 0.000	p = 0.000		p = 0.000

The Mann–Whitney rank sum test was used for the grade data. P < 0.05 was considered as significant difference. ** Before and after intervention group comparison, P < 0.01, * Before and after intervention group comparison, P < 0.05; Compared with group D before intervention, P < 0.01; compared with group D before intervention, P < 0.05; Compared with group D after dd intervention, P < 0.01; compared with group D after dd intervention, P < 0.05; After intervention, cc was compared with group C (P < 0.01). After intervention, cc was compared with group C (P < 0.05)