Patient characteristics in the derivation, internal and external validation cohorts were shown in Table 1.
A total of 8,820, 5,882, and 2,938 patients were enrolled in the derivation, internal validation and external validation cohorts.
2. The GIB-AIS showed good discrimination and calibration in large derivation, internal and external validation cohorts.
The total number of individuals used in the derivation, internal, and external validation sets were 1660, 551, and 123, respectively.
The overall in-hospital GIB after AIS was 2.6%, 2.3%, and 1.5% in the derivation, internal, and external validation cohort, respectively.
Second, for accuracy, the AIS-GIB score showed good discrimination and calibration, and the results were verified in independent derivation, internal and external validation cohorts.
Schroeder (2007b) attacks the derivation of internal reasons from external reasons; here we can go on to consider whether external reasons are themselves harder to explain than internal ones.
If the derivation of internal reasons from external reasons turns out to be unsuccessful, however, or external reasons themselves are difficult to explain, then Actual State reasons internalism will gain traction as an explanatory hypothesis.
Derivation and internal validation of the rule among adult patients prospectively recruited from 37 health centers (Perú), either a) presenting with a positive acid-fast bacillus smear, or b) had failed therapy or had a relapse within the first 12 months.
Initial results describing the derivation and internal validation were published in July 2007.
