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

Figure 3

Influence of BMI on operating time. The graph shows a scatter-plot of the BMI and operating time data. The thumbnails are similar scatter-plots showing the influence on operating time from age and numbers of levels fused, which were also significant in the overall regression model. It should be kept in mind that each graph shows only the bivariate distribution of operating time and one other variable; the graphs cannot visually adjust or control for the other two significant variables. The statistical parameters for this regression model were as follows: regression slope = 2.56, 95% CI = 0.79 to 4.35, = 2.87, = 0.005, and adjusted = 0.31.

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