Thus, possibility of some degree of misclassification of disease remains.
As with all studies utilizing environmental exposure data, the present investigation would be expected to have some degree of misclassification in the measurement of those factors.
Although the validity and reliability of the food-frequency questionnaire have been extensively evaluated, some degree of misclassification may exist in the dietary assessment and over- or under-estimation of true intake could have biased the estimates.
This implies some degree of misclassification.
Some degree of misclassification is therefore inevitable.
In every study on PD there is some degree of misclassification of cases.
Patient registries may, however, be affected by some degree of misclassification of ovarian cancer diagnoses.
However, ovarian cancer diagnoses in the DNRP may be affected by some degree of misclassification.
Some degree of misclassification is therefore inevitable (for all studies on this topic).
Although this approach has been shown to be valid [ 17], some degree of misclassification is likely.
