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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Psychosom Med. 2008 Dec 10;71(1):57–62. doi: 10.1097/PSY.0b013e318190d7de

Figure 1.

Figure 1

LPS-stimulated production of interleukin-6 increases over time in subjects with chronic interpersonal stress. For the purpose of illustration, the sample was stratified at the median of chronic interpersonal stress (2.4 on a 1–5 scale), and the groups’ IL-6 values were compared using a repeated-measures ANOVA. Covariates included age, ethnicity, oral contraceptives, socioeconomic status, central adiposity, and physical activity. The analysis yielded a significant Stress X Time interaction, F (1,95) = 4.11, p = .05, indicating that the low and high stress groups changed differentially over the 6-month follow-up. Data are plotted as mean + standard error.