The Negligible Influence of Chronic Obesity on Hospitalization, Clinical Status, and Complications in Elective Posterior Lumbar Interbody Fusion

Figure 4

Influence of BMI on wound complications. The graph shows a scatter-plot of BMI and the number of wound complications, with the regression curve and 95% CI superimposed using the right-side axis. Dots represent the actual data of BMI and wound complications from this study. The middle curve represents the probability of a wound complication, and the upper and lower curves show the interval within which the probability curve can be assumed with 95% confidence to lie. The statistical parameters for this model were as follows: regression slope = 0.11, 95% CI = 0.005 to 0.217, = 2.28, = 0.04, and pseudo = 0.07.