Some studies did not mention the proportion of participants who may have continued to use the method after the last follow-up visit and who therefore may have had pregnancies that occurred during method use but that were not ascertained by the researchers.
So far Friday, Moscow has rejected direct talks with Ukraine mediated by the West, a notion that Putin's spokesman said "makes us smile"; and blocked international observers from entering Crimea with troops whose specific affiliation was not ascertained but who in any case were definitely not withdrawn to bases.
Ambulatory status for excluded patients was not ascertained, but assuming that all the sedated patients were non-ambulatory, inclusion of this cohort might change the odds ratio and this association.
The origin of the outbreak strain was not ascertained, but phylogenetic analysis suggested that it had close affinity with isolates from West Africa (4, 5 ).
Cases born in the Northern Region but diagnosed elsewhere were not ascertained, which could lead to underestimation of the effects of population mixing.
Whether one form of IPV is triggering off to another or occurred more or less simultaneously was not ascertained, but the women were involved in highly violent relationships.
Information on medications for raising HDL cholesterol, needed for the Harmonized definition, were not ascertained but were expected to be infrequent given that baseline exams occurred prior to 1992.
About 5 ml of venous blood was collected from each subject as per the routine antenatal care follow up of the pregnant women in the morning but fasting status was not ascertained.
Gestational diabetes mellitus (GDM) is a risk factor for future incident type 2 diabetes (23), but GDM history was not ascertained in this study because the majority (88%) of women gave birth before 1979, when GDM became a clinically recognized entity.
These indexes represent the non-ascertained individuals, who could have been diagnosed with T1D in the "ascertainment window", but who were in fact not ascertained to the DiMe sample.
