Sentence examples for date of ascertainment from inspiring English sources

Cases were considered at risk from age 5 until the date of diagnosis of cancer or date of ascertainment, censoring at age 65.

Follow-up time started (baseline) at the latest of first date of ascertainment of smoking status or 365 days after ART initiation, by which time CD4+ cell counts have usually risen substantially, with corresponding declines in AIDS-related mortality [ 7, 14, 15].

In these models, the time variable was the interval between the index date and the date of cancer ascertainment, or date of withdrawal from NHI, or December 31 , 2007

Women were excluded from this study if they were non-incident cases (i.e. those diagnosed more than 12 months prior to the date of study ascertainment) or had a prior diagnosis of cancer at any site except nonmelanoma skin cancer.

Men were excluded from this study if they reported having exposure to finasteride or dutasteride at any time prior to their CaP diagnosis, were diagnosed more than 12 months prior to the date of study ascertainment, or had ever been diagnosed with cancer at any site (except non-CaP skin cancer) other than their recently diagnosed CaP.

If the exposure variable was measured early in the HIV epidemic and an ecological study uses date-of-exposure variable ascertainment as the basis for determining HIV prevalence then this HIV prevalence may be misleadingly low.

In AACES, we found a longer length of time between date of diagnosis and ascertainment among those deceased as compared to those who eventually enrolled in the study, which may partially account for the overall high proportion of deceased patients.

Participants were deemed as living if they had a clinical encounter within 6 months of ascertainment date and did not have a documented death in either the EMR or the SSDI.

Participants were censored at either the date of first primary joint replacement performed for indications other than OA, the date of death, the date left Australia, or end of follow-up (i.e. December 31, 2005 (the date that ascertainment of joint replacement by NJRR was complete), whichever came first.

In our case the finding could also be confounded by high number of unknown dates and ascertainment of correct date was not possible.

The BMJ editorial discussed only two of three problems with the quality of data that might lead to underestimation of survival: inaccurate date of diagnosis and incomplete ascertainment of patients with cancer.