Serum γ-glutamyltransferase, alanine aminotransferase, and aspartate aminotransferase activity in Iranian healthy blood donor men

Table 2 ALT tertiles according to characteristics of the study population

	ALT
Variable	< 22	22-34	> 34	P
Age (mean ± SD), yr	42.1 ± 11.9	41.5 ± 10.9	38.9 ± 9.9	0.001 (group 1, 2 vs group 3)
Body weight (mean ± SD), kg	79.0 ± 11.5	83.0 ± 11.4	86.5 ± 14.4	0.000 (all of groups)
Height (mean ± SD), cm	174.45 ± 6.76	174.67 ± 6.69	175.4 ± 6.6	0.173
Body mass index (BMI) (mean ± SD)	25.94 ± 3.4	27.29 ± 3.6	28.1 ± 4.6	0.000 (all of groups)
Waist circumference (mean ± SD), cm	93.2 ± 9.5	95.7 ± 8.6	98.1 ± 9.5	0.000 (all of groups)
Hip circumference (mean ± SD), cm	99.5 ± 9.0	102.0 ± 8.2	104.1 ± 9.2	0.001 (all of groups)
Waist to hip ratio (WHR) (mean ± SD)	0.94 ± 0.04	0.94 ± 0.05	0.94 ± 0.05	0.152
Diabetes mellitus (% positive)	2.0	1.0	1.9	0.571
Family history of diabetes (% positive)	20.6	21.8	18.2	0.538
Family history of liver disease (% positive)	0.3	1.3	1.6	0.268
Hypertension (% positive)	3.6	2.4	2.6	0.621
Dyslipidemia (% positive)	4.9	7.4	7.1	0.402
Smoking habit (% positive)	21.64	23.57	20.2	0.602