ascertainment

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as·cer·tain·ment

(as'ser-tān'ment),
In epidemiologic and genetic research, the method by which a person, pedigree, or cluster is brought to the attention of an investigator; ascertainment has a bearing on the interpretation of segregation ratios, concordance rates, linkage analysis, and other probability features.
References in classic literature ?
I shall send a Commissioner to ascertain the sentiments of the hogs."
"Your probity," replied the stranger, "is so well known to the prefect that he wishes as a magistrate to ascertain from you some particulars connected with the public safety, to ascertain which I am deputed to see you.
This was all the visitor wished to ascertain, or, rather, all the Englishman appeared to know.
The few facts in connection with his death which I subsequently ascertained (partly from Pesca and partly from other sources), may be stated here before the subject is dismissed from these pages.
In order to ascertain the real character of the government, it may be considered in relation to the foundation on which it is to be established; to the sources from which its ordinary powers are to be drawn; to the operation of those powers; to the extent of them; and to the authority by which future changes in the government are to be introduced.
Towards noon Phileas Fogg, having ascertained their position, called Passepartout, and ordered him to go for Captain Speedy.
"Our instruments," he said, "are now so perfect and powerful, as to enable us to ascertain many facts of the deepest interest, with near approaches to positive accuracy.
Many of them reject the fruit altogether except at a particular period of its growth, which, incredible as it may appear, they seemed to me to be able to ascertain within an hour or two.
It was not until after separation on the following morning that the captain and his men ascertained the secret of all this loving-kindness.
By equal altitudes of the sun, taken at this last encampment, Captain Bonneville ascertained his latitude to be 41 47' north.
There is a sort of ridiculous delicacy about him which requires the fullest explanation of whatever he may have heard to my disadvantage, and is never satisfied till he thinks he has ascertained the beginning and end of everything.
Under these circumstances the captain did not think it prudent to approach within three leagues, until the bar should be sounded and the channel ascertained. Mr.