≤ BMI 20 20< BMI ≤ 25 25< BMI ≤ 30 BMI > 30
Mean BMI 18.6 22.8 27.2 33.4
Empirical probability of problems 0.060 0.061 0.078 0.165
Table 3: Empiric Probability of ventilatory problems with Increasing BMI, Cut off BMI 30