Table 1. Relationship Between Levels of... | American Society of Hematology

Table 1.

Relationship Between Levels of Leptin and Hemoglobin in Male Workers

	Hemoglobin (g/dL)
	<14.5	14.5-15.8	≧14.9
n	148	422	138
Age (yr)	47.7 (0.5)	45.9 (0.3)^*	44.6 (0.6)^†
Body-mass index (kg/m²)	22.30 (0.2)	23.2 (0.1)^†	24.1 (0.2)^†
Exercise (times/mon)	2.8 (0.3)	2.5 (0.1)	1.8 (0.2)^*
Cigarettes (pieces/d)	13.0 (1.3)	12.6 (0.7)	14.9 (1.4)
Alcohol (mL/wk)	202.0 (15.0)	197.0 (8.3)	203.0 (15.6)
Leptin (ng/mL)	3.37 (0.14)	3.61 (0.09)	3.68 (1.58)
Insulin (μU/mL)	3.93 (0.17)	4.56 (2.24)^*	5.40 (0.31)^†
Adjusted for age, body-mass index, and exercise
Leptin (ng/mL)	3.71 (0.12)	3.60 (0.07)	3.34 (0.13)^‡
Insulin (μU/mL)	4.33 (0.20)	4.54 (0.11)	5.02 (0.20)^‡
Adjusted for age, body-mass index, exercise and insulin
Leptin (ng/mL)	3.75 (0.12)	3.61 (0.07)	3.27 (0.12)^*

	Hemoglobin (g/dL)
	<14.5	14.5-15.8	≧14.9
n	148	422	138
Age (yr)	47.7 (0.5)	45.9 (0.3)^*	44.6 (0.6)^†
Body-mass index (kg/m²)	22.30 (0.2)	23.2 (0.1)^†	24.1 (0.2)^†
Exercise (times/mon)	2.8 (0.3)	2.5 (0.1)	1.8 (0.2)^*
Cigarettes (pieces/d)	13.0 (1.3)	12.6 (0.7)	14.9 (1.4)
Alcohol (mL/wk)	202.0 (15.0)	197.0 (8.3)	203.0 (15.6)
Leptin (ng/mL)	3.37 (0.14)	3.61 (0.09)	3.68 (1.58)
Insulin (μU/mL)	3.93 (0.17)	4.56 (2.24)^*	5.40 (0.31)^†
Adjusted for age, body-mass index, and exercise
Leptin (ng/mL)	3.71 (0.12)	3.60 (0.07)	3.34 (0.13)^‡
Insulin (μU/mL)	4.33 (0.20)	4.54 (0.11)	5.02 (0.20)^‡
Adjusted for age, body-mass index, exercise and insulin
Leptin (ng/mL)	3.75 (0.12)	3.61 (0.07)	3.27 (0.12)^*

Values are mean (SE). P values are versus the group with hemoglobin levels of <14.5 g/dL. Statistic analysis was performed using the general linear regression model procedures of Statistical Analysis System (SAS Institute, Cary, NC).

P < .01.

†

P < .001.

‡

P < .05.

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