To address issues of poor sensitivity and ceiling effects displayed by the original instrument, a 5-level version of EQ-5D was recently introduced, thus potentially improving its performance at the milder end of visual function loss [ 22, 41].
The present results show PANSS-EC has a good sensitivity; without either ceiling or floor effect; with an acceptable Cronbach's alpha and an optimal temporal stability.
To improve the instrument's sensitivity and reduce ceiling effects, the EuroQol Group recently introduced a five level version of the EQ-5D, named the EQ-5D-5L [ 11].
This promises better measurement properties in terms of improving the instrument's sensitivity and reducing ceiling effects by increasing the number of severity levels [ 13, 14].
According to our results, the SF-6D is shown to be more appropriate choice among stable angina patients because of its higher sensitivity and lower ceiling effect.
In response to concerns regarding the original EQ-5D-3L, thEQ-5D-5L5L questionnaire was developed to improve the instrument's sensitivity and reduce ceiling effects [ 20].
Another measure, the EQ-5D-5L, expanded the EQ-5D from 3 Levels to 5 Levels in order to potentially improve upon the properties of the standard 3-level EQ-5D by enhancing sensitivity and reducing ceiling effects [ 11].
Fei-Li Zhao et al. found that both EQ-5D and SF-6D are demonstrated to be valid and sensitive HRQoL measures in Chinese chronic prostatitis patients, with SF-6D showing better HRQoL dimension coverage, greater sensitivity, and lower ceiling effect [ 13].
Moreover AQT may be important when evaluating new treatments in the early stages of AD, because of its sensitivity and lack of ceiling effect.
The item content was unchanged from the Legacy instruments but the time frame was moved to the present tense from "over the past week" and the response options changed from four to five by insertion of an option "with a little difficulty" intended to increase sensitivity and to reduce ceiling effects.
The viewer's sensitivity is punished by ceilings that are too high, bunker-thick walls, dingy floors of concrete and unfinished wood, and uniform, rainy-weekend lighting.
