(the proportion of self-reported 'overweight' or 'obese' persons who actually are overweight or obese based on measured height and weight) are 95.8% and 93.9%, respectively. However, a closer look at the misclassifications reveals that the majority of the misclassified cases have BMI values within an interval of just one unit from the category boundary in question. For example, while 43.5% of adults classified as "underweight" based on their measured BMI were classified as "normal weight" based on self report, about three-fourths of these individuals (32.1%) had self-reported BMI values at the lower end of "normal" category --- with a self-reported BMI value between 18.5 and 19.5. Similarly, while 16.0% of overweight adults were misclassified as "normal weight" using self-reported data, nearly two-thirds of these overweight adults (10%) had a self-reported BMI values between 24 and 25; likewise, 19% of obese persons were misclassified as "overweight" using self-reported BMI, but more than half of these adults (10.6%) had a self-reported BMI value between 29 and 30. Finally, among extremely obese individuals whose self-reported BMI fell below 40, 9.7% actually had a self-reported BMI between 39 and 40. Generally, deviations of BMI values based on self-reported height and weight from BMI values
