Sentence examples for ever been ascertained from inspiring English sources

No clear cause has ever been ascertained for the mysterious crash and no commission of inquiry was ever formed; sabotage was widely suspected.

"We're trying to put the pieces together to figure out why," said Louisiana State Police Superintendent Colonel Michael D. Edmonson during a televised press conference, though he expressed doubt that a clear motive might ever be ascertained.

In general, two big problems with Ecstasy have been ascertained.

The association with having ever breastfed could not be ascertained because of an inadequate sample size.

An indicator for females who were breast screened in the past two years was ascertained from responses to ever having a mammogram and the year of (45 and Up Study) or time interval (PHS) since their last mammogram.

In the ever-underground subcohort, 122 lung-cancer deaths were ascertained.

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.

Breast cancer screening was ascertained from the question "Have you ever been for a breast screening mammogram?".

History of stroke was ascertained using one question, "Have you ever suffered a stroke, ministroke or TIA (Transient Ischemic Attack)?" Blood pressure was measured twice during the interview.

A self-reported history of bowel cancer screening was ascertained from the question, "Have you ever been screened for colorectal (bowel) cancer?

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?