[Retracted] Analysis of the Curative Effect and Influencing Factors of Collagen Sponge Combined with Autologous Skin Graft in the Treatment of Deep Burn Patients

Table 3

Assignment for multivariate analysis of factors.

Factors	Variable	Assignment
Age	X1	Continuous variable
Degree of burn	X2	Deep II degree = 0, deep III-IV degree = 1
Wound infection	X3	No = 0, yes = 1
Hospital stay	X4	<1 = 0, 1–3 = 1, >3 = 2