Some of the most expensive fighters such as the US F-14 Tomcat, F-15 Eagle, F-22 Raptor and Russian Su-27 were employed as all-weather interceptors as well as air superiority fighter aircraft, while commonly developing air-to-ground roles late in their careers.
The health service measures that best predict subjective health status should be identifiable. Following her further degree in clinical epidemiology and biostatistics, her interest turned to the development of methods to measure subjective health status.
Examples of Objective and Subjective. Objective : scientific facts are objective as are mathematical proofs; essentially anything that can be backed up with solid data. Subjective : opinions, interpretations, and any type of marketing presentation are all subjective.