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. Author manuscript; available in PMC: 2014 Oct 2.
Published in final edited form as: Brain Behav Immun. 2012 Oct 26;28:63–71. doi: 10.1016/j.bbi.2012.10.018

Table 1.

Sample characteristics (N = 13162).

Na Percent or mean (SE)
EBV antibody titers (mean, au/mL) 13162 151.00 (1.47)
Age (mean) 13162 28.95 (0.12)
Sex (%)
Male 5996 49.47 (0.67)
Female 7166 50.53 (0.67)
Race (%)
Black 2538 14.23 (1.90)
Asian 733 2.87 (0.70)
Hispanic 1902 11.03 (1.60)
Multi-racial, native Am., other 866 5.59 (0.48)
White 7123 66.28 (2.83)
Parent education, Wave 1 (%)
Parent did not attend or unsure 234 1.97 (0.21)
Less than high school 1642 12.15 (1.10)
High school/GED/Voc. High school 3355 27.42 (1.09)
Some voc. or tech. post-secondary 1162 9.85 (0.63)
Some college 2566 18.96 (0.64)
College 2373 16.83 (0.70)
More than college 1830 12.81 (1.27)
Family income, Wave 1 (%)
Missing 3128 21.60 (0.93)
<$20,000 2358 18.94 (1.27)
$20,001–$40,000 3134 24.57 (0.82)
$40,001–$60,000 2407 18.50 (0.77)
>$60,001 2135 16.38 (1.17)
Parent occupation, Wave 1 (%)
Missing 1074 8.36 (0.65)
Service/construction/military 4522 35.22 (1.20)
Technical/sales/office worker 3197 24.90 (0.72)
Professional/manager 4369 31.52 (1.40)
Smoker in home, Wave 1 (%)
Missing 1788 12.03 (0.74)
Yes 5157 42.29 (1.15)
No 6217 45.68 (1.08)
Physical abuseb
1–2 times 1139 8.34 (0.38)
3–10 times 693 5.11 (0.28)
>10 times 626 4.64 (0.29)
None 10651 81.90 (0.65)
Sexual abuseb
1–2 times 337 2.65 (0.21)
3–10 times 202 1.56 (0.14)
>10 times 157 1.03 (0.21)
None 12429 94.76 (0.31)
a

Note: table presents un-weighted frequencies (N) and weighted means and percents.

b

Sample totals are slightly smaller for physical and sexual abuse due to missing responses for 53 and 37 respondents, respectively.