. Author manuscript; available in PMC: 2010 Jul 1.

Published in final edited form as: Brain Behav Immun. 2009 Jan 22;23(5):677–683. doi: 10.1016/j.bbi.2009.01.008

Table 1.

Demographic characteristics of sample and for male and female participants separately.

Characteristic	Total Sample n = 811 M (SD)	Men n = 394 M (SD)	Women n = 417 M (SD)	Test Statistic
Age (years)	44.8 (6.7)	44.6 (7.0)	44.9 (6.6)	F_1,810 = 0.49
Race (% black)	13%	9.5%	16%	χ²=8.83^**
BMI (kg/m²)	27.3 (5.4)	27.8 (4.7)	26.4 (5.9)	F_1,810 = 23.4^**
Smoking (% current)	16%	18%	13%	χ²=5.8^*
Exercise (kilocals)	2415 (1777)	2577(1773)	2287 (1769)	F_1,810 = 13.1^**
Alcohol (drinks/week)	3.98 (7.5)	5.91 (9.4)	2.20 (4.4)	F_{1, 810} = 59.1^**
Sleep (hours/week)	47.9 (7.0)	47.3 (6.9)	48.8 (6.9)	F_{1, 810} = 12.3^**
CRP	1.65 (1.9)	1.49 (1.7)	1.79 (2.1)	F_{1, 810} = 0.06
Individual Ed (yrs)	15.6 (2.6)	15.9 (2.6)	15.4 (2.6)	F_{1, 810} = 4.54^*
Parental Ed (yrs)	13.5 (2.9)	13.5 (2.9)	13.4 (2.9)	F_{1, 810} = 0.15

^**

P<.01,

P<.05,

⁺

P<.10

Race coded 0 = White, 1 = Black. BMI = Body Mass Index; Smoking Status (0=not current, 1=current).

Mean comparisons conducted on the transformed CRP, alcohol, and exercise variables.