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Figure 1

Figure 1. From: Literacy and blood pressure - do healthcare systems influence this relationship? A cross-sectional study.

Adjusted systolic blood pressure by healthcare system and literacy. Adjusted for variables in model listed on Table 2. Error bars represent 95% confidence intervals. P value from test of interaction between literacy and healthcare system = 0.003.

Benjamin J Powers, et al. BMC Health Serv Res. 2008;8:219-219.

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