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. 2013 Jun 5;8(6):e64789. doi: 10.1371/journal.pone.0064789

Table 7. PWID subpopulations trend analysis with linear, quadratic and cubic models of time.

Intercept Linear Quadratic Cubic
Non-Hispanic White 85.17 0.32 0.13** −0.01
Non-Hispanic Black 211.80 −8.38** 1.01** 0.02
Hispanic 132.73 −3.06** 0.24** −0.02
Male 138.46 −1.41** 0.17** −0.02
Female 78.90 −0.28 −0.01 −0.01
Young (15–29) 100.64 3.52** 0.18** −0.03*
Old (30–64) 113.25 −2.68** 0.04 −0.01
**

pseudo-p<0.001;

*

pseudo- p<0.05.