The PSQI is a valid and consistent survey comprising of 19 questions to assess quality and amount of sleep and the existence of a sleep disorder and its level in the previous month. The scale was adapted into the Turkish language by Agargün et al. (1996). The scale consists of seven components that assess patients subjective sleep quality, sleep delay, use of sleeping medication and disfunction in daily activities. Each item scores in the range 0-3 points and the total score of the seven components gives the total PSQI score. The total score has a value between 0-21 and a high total score demonstrates a poor quality of sleep. A total PSQI score which is ≤5 indicates "good sleep", and a score which is >5 indicates "poor sleep"

The PSQI is a valid and consistent survey comprising of 19 questions to assess quality and amount of sleep and the existence of a sleep disorder and its level in the previous month. The scale was adapted into the Turkish language by Agargün et al. (1996). The scale consists of seven components that assess patients subjective sleep quality, sleep delay, use of sleeping medication and disfunction in daily activities. Each item scores in the range 0-3 points and the total score of the seven components gives the total PSQI score. The total score has a value between 0-21 and a high total score demonstrates a poor quality of sleep. A total PSQI score which is ≤5 indicates "good sleep", and a score which is >5 indicates "poor sleep"

It is a 5-item scale developed by English Medical Research Council to evaluate dyspnea. While applying Medical Research Council Dyspnea Scale, the patients are asked to indicate the level of activity that creates dyspnea in them. The patient chooses the most appropriate level that defines the respiratory problem by reading the options in the scale. The options are scored between 0 and 4; 0 means no dyspnea, 1 means mild dyspnea (respiratory distress when moving quickly and climbing slightly uphill); 2 means moderate dyspnea (walking slower than peers when walking straight on, stopping to breathe); 3 means severe dyspnea (stopping to breathe after walking about 100 m or for a few minutes) and 4 means very severe dyspnea (getting out of breath while doing daily chores at home, while putting on and taking off clothes and while going to toilet).

It is a 5-item scale developed by English Medical Research Council to evaluate dyspnea. While applying Medical Research Council Dyspnea Scale, the patients are asked to indicate the level of activity that creates dyspnea in them. The patient chooses the most appropriate level that defines the respiratory problem by reading the options in the scale. The options are scored between 0 and 4; 0 means no dyspnea, 1 means mild dyspnea (respiratory distress when moving quickly and climbing slightly uphill); 2 means moderate dyspnea (walking slower than peers when walking straight on, stopping to breathe); 3 means severe dyspnea (stopping to breathe after walking about 100 m or for a few minutes) and 4 means very severe dyspnea (getting out of breath while doing daily chores at home, while putting on and taking off clothes and while going to toilet).

It is a 5-item scale developed by English Medical Research Council to evaluate dyspnea. While applying Medical Research Council Dyspnea Scale, the patients are asked to indicate the level of activity that creates dyspnea in them. The patient chooses the most appropriate level that defines the respiratory problem by reading the options in the scale. The options are scored between 0 and 4; 0 means no dyspnea, 1 means mild dyspnea (respiratory distress when moving quickly and climbing slightly uphill); 2 means moderate dyspnea (walking slower than peers when walking straight on, stopping to breathe); 3 means severe dyspnea (stopping to breathe after walking about 100 m or for a few minutes) and 4 means very severe dyspnea (getting out of breath while doing daily chores at home, while putting on and taking off clothes and while going to toilet).