Sentence examples for derivation group from inspiring English sources

Patients: Consecutive sample of 661 patients admitted between January 1995 and February 1999, including a derivation group of 452 patients and a validation group of 209 patients.

The area under the receiver operating characteristic curve was 0.89 in the derivation group and 0.85 in the validation group.The probability of achieving sustained virological response with pegIFN-RBV therapy in HIV-HCV-coinfected patients can be reliably estimated prior to initiation of therapy using an index that includes 4 noninvasive parameters.

In the derivation group, CSF of 75 patients was collected.

First, we used the RNA samples of the 8 mice enrolled in microarray experiments (Derivation group).

For validation, the same process was performed in the derivation group.

The results obtained were very similar to that of the derivation group.

Table  3 shows the results of the analysis of derivation (development group) and validation (validation group) data sets of the new TOR rule for predicting one-month death.

The subjects were randomly divided into either a derivation or validation group.

There was no statistically significant difference in the average time since baseline CD4% in either group (derivation 352 days vs. validation 359 days), while mean baseline CD4percentt increased marginally from 25.4 to 26.8%% (p = 0.002, t-test).

The model discriminated well between patients experiencing an in-hospital event and those who did not in both derivation and validation groups (c-statistic = 0.77 in both).

Derivations in this group are distinctive because they demonstrate that mass-energy equivalence is a consequence of the changes to the structure of spacetime brought about by special relativity.