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Table 2 Final set of attributes used in the best-worst scaling questions

From: Quantifying the importance of inhaler attributes corresponding to items in the patient satisfaction and preference questionnaire in patients using Combivent Respimat

Attribute Definitions
Good sensation in your mouth and throat when inhaling your medicine With this attribute, we would like you to think about how important it is to have an inhaler with a medicine that gives you a good overall sensation in your mouth and throat when inhaling the medicine.
Feeling that your medicine gets into your lungs With this attribute, we would like you to think about how important it is to have an inhaler with a medicine that you feel gets fully into your lungs after inhaling it.
Being able to tell how much medicine is left With this attribute, we would like you to think about how important it is to have an inhaler that tells you how much medicine is left in the inhaler and has an indicator that lets you know when you need to refill your prescription.
Inhaler works reliably With this attribute, we would like you to think about how important it is to have an inhaler that works well every time you use it.
Inhalers that work well:
 ▪ Don’t clog
 ▪ Lock when all the medicine has been used
 ▪ Don’t accidentally release the dose when stored in your pocket or purse
Inhaler makes inhaling your medicine easy With this attribute, we would like you to think about how important it is to have an inhaler that lets you inhale your medicine easily.
Having clear instructions to use your inhaler With this attribute, we would like you to think about how important it is to have an inhaler that includes clear instructions and that are easy to follow.
Inhaler is durable With this attribute, we would like you to think about how important it is to have an inhaler that continues to work after falling on the ground or going through an incident that could damage it.
Inhaler is easy to clean With this attribute, we would like you to think about how important it is to have an inhaler that is easy to clean after you use it.
Inhaler is easy to use With this attribute, we would like you to think about how important it is to have an inhaler that is easy to use as you take your medicine.
With inhalers that are easy to use, you:
 ▪ Like the number of steps needed to take the medicine
 ▪ Like the time needed to take the medicine.
Medicine comes out of the inhaler at a comfortable speed for inhalation With this attribute, we would like you to think about how important it is to have an inhaler that allows the medicine to come out at a comfortable speed so you can inhale your medicine easily.
Inhaler is easy to hold With this attribute, we would like you to think about how important it is to have an inhaler that can be held without difficulty when taking your medicine.
Inhaler is easy to carry with you With this attribute, we would like you to think about how important it is to have an inhaler that you can carry with you without difficulty.