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

Table 1 AST tertiles according to characteristics of the study population

	AST
Variable	< 21	21-25	> 25	P
Age (mean ± SD), yr	42.1 ± 11.4	40.9 ± 11.2	39.5 ± 10.2	0.020 (group 1 vs group 3)
Body weight (mean ± SD), km	80.6 ± 11.9	82.1 ± 12.8	85.7 ± 13.4	0.000 (group 1, 2 vs group 3)
Height (mean ± SD), cm	174.4 ± 6.9	174.9 ± 6.4	175.3 ± 6.8	0.232
Body mass index (BMI) (mean ± SD)	26.6 ± 3.7	26.9 ± 3.9	27.9 ± 4.3	0.000 (group 1, 2 vs group 3)
Waist circumference (mean ± SD), cm	94.3 ± 8.6	95.5 ± 9.7	97.3 ± 9.7	0.000 (group 1, 2 vs group 3)
Hip circumference (mean ± SD), cm	100.7 ± 8.2	101.5 ± 9.4	103 ± 9.1	0.001 (group 1, 2 vs group 3)
Waist to hip ratio (WHR) (mean ± SD)	0.94 ± 0.04	0.94 ± 0.05	0.94 ± 0.05	0.449
Diabetes mellitus (% positive)	2.7	1.3	1.0	0.226
Family history of diabetes (% positive)	23.3	18.8	18.6	0.271
Family history of liver disease (% positive)	0.3	1.6	1.3	0.276
Hypertension (% positive)	3.7	2.6	2.3	0.574
Dyslipidemia (% positive)	6.3	4.9	8.1	0.262
Smoking habit (% positive)	24.0	21.7	19.7	0.435