Our results suggest that as a methodology, there is valuable information to be gained by dissecting the black box of unobservables using data on behavioral traits.
We call such missing data "unobservable".
Patients who survived the life-threatening trauma of the earthquake and later enrolled on ART may have had a tendency to more highly prioritize health and health care, but this type of change is unobservable in our data.
In theory, prehospital EMS personnel may be more likely to take patients to TH centers when they believe these patients are good candidates for TH treatment due to patient risk factors that are unobservable in our data.
Despite the NMR signals originating from the C-terminal region of Cby being unobservable, the CD data of full-length Cby and N-Cby together provide strong evidence that helical structure is present in the C-terminal portion of the protein.
Since both cancer and diabetes are complex, it is possible that the bridged group with these conditions had a higher level of severity, unobservable in claims data, which may have resulted in both longer LOS and a higher likelihood to receive bridging therapy.
Our estimation strategies control for selection on observables, but unfortunately there is no way to fully address the risk of selection on unobservables in our data.
This paper presents an algorithm based on integer programming for the optimal placement of PMUs to detect unobservable electric power SCADA data integrity attacks.
IDV(3) is defined as unobservable from the process data in [17], which implies no observable change in mean or the variance can be detected.
The state value (f_{s}) is the "true value" and unobservable except the well data, and the state value (w) is regarded as "observation value".
