Notwithstanding this, it is not possible to know the number of pregnancies that spontaneously abort at an early stage of pregnancy due to congenital anomaly rendering it impossible to ever ascertain a measure of prevalence that is completely free from this bias.
According to Mayhew "Among these hapless lads were indeed many deaths from accidents, cruelty, privation, and exhaustion, but it does not appear that the number was ever ascertained".
According to Mayhew, "among these hapless lads were indeed many deaths from accidents, cruelty, privation, and exhaustion, but it does not appear that the number was ever ascertained".
In relation to our use of Aβ deposition in the model as the marker of the preclinical stage, we understand that primary prevention interventions should be applied before the onset of pathological changes by promoting initiation and maintenance of good health and eliminating or modifying potential risk conditions, if these are ever ascertained [ 30, 31].
Consistent with previous studies, 9, 10 self-reported suicidal ideation as a dependent variable was ascertained by asking, "Have you ever thought of killing yourself during the past 12 months?" with a choice of yes or no for an answer.
A history of PSA testing was ascertained from the question, "Have you ever had a blood test ordered by your doctor to check for prostate disease?
Lifetime recall of previous foot and ankle injury was ascertained on standardised personal interview (yes/no response to the question 'Have you ever injured your feet or ankles?', with follow-up questions to ascertain type, anatomical location and duration of time since injury, analysed in right feet only).
Breast cancer screening was ascertained from the question "Have you ever been for a breast screening mammogram?".
Current asthma status was ascertained by asking respondents, "Has a doctor ever told you that you had asthma", and then "do you still have asthma?" Diabetes status was ascertained by asking respondents, "Have you ever been told by a doctor that you have diabetes?" Responses were coded as "yes", "yes during pregnancy", or "no".
