Healing of Chronic Wounds with Platelet-Derived Growth Factors from Single Donor Platelet-Rich Plasma following One Freeze-Thaw Cycle. A Cross-Sectional Study.

Using chi-square tests, this relationship was found to be highly significant ( p < 0.001, chi 2 = 19.51; p value = 0.00006).

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We then tried using a forward stepwise procedure, introducing one by one the two variables that were most significant in the univariate analysis; however, again, it was not possible to construct a multivariate model, even with these two factors, let alone when including all variables that were close to significance.

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