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Table 2 Profile of treatment attributes and attribute levels

From: Outcomes associated with matching patients' treatment preferences to physicians' recommendations: study methodology

Treatment Attribute

Attribute Levels (categories)

Treatment durationa

Each treatment will take:

• 5 minutes to complete.

• 15 to 30 minutes to complete.

• 1 hour to complete.

• 2 hours to complete.

Treatment frequency a

My treatment will occur:

• Once every three months.

• Once every two weeks.

• Two times each week.

• Twice daily.

Treatment cost a

I will have to pay:

• Nothing to cover the cost of my treatments.

• An additional 50 € per month to cover the cost of my treatments.

• An additional 100 € per month to cover the cost of my treatments.

• An additional 200 € per month to cover the cost of my treatments.

Treatment location a

My treatment will take place:

• At home.

• At home with follow-up at my local doctor's office.

• At an outpatient clinic.

• While I stay in the hospital for three weeks.

Treatment delivery method a

My treatment will occur by:

• Applying medication on my skin.

• Taking Tablets.

• Having an injection/intravenous infusion.

• Light therapy.

Magnitude of beneficial effect b

I will likely experience:

• Almost a 100% reduction in my psoriasis plaques.

• About a 75% reduction in my psoriasis plaques.

• About a 50% reduction in my psoriasis plaques.

• About a 25% reduction in my psoriasis plaques.

Duration of beneficial effect b

The improvement in my psoriasis will last for:

• 1 year or more after completing all of my treatments.

• 6 to 8 months after completing all of my treatments.

• 3 to 5 months after completing all of my treatments.

• 2 weeks after completing all of my treatments.

Probability of side effects b

There is:

• Almost a 100% chance that I will experience side effects from the treatment.

• About a 50% chance that I will experience side effects from the treatment.

• About a 10% chance that I will experience side effects from the treatment.

• Less than 1% chance that I will experience side effects from the treatment.

Probability of beneficial effect b

I have:

• Almost a 100% chance of experiencing a significant reduction in my psoriasis.

• About an 80% chance of experiencing a significant reduction in my psoriasis.

• About a 60% chance of experiencing a significant reduction in my psoriasis.

• About a 40% chance of experiencing a significant reduction in my psoriasis.

Reversibility of side effects b

If side effects occur, there is:

• Almost 100% chance that I will completely recover once my treatments are stopped.

• About an 80% chance that I will completely recover once my treatments are stopped.

• About a 60% chance that I will completely recover once my treatments are stopped.

• About a 40% chance that I will completely recover once my treatments are stopped.

Side effect severity b

I may experience:

• Temporary, minor discomfort on my skin.

• Constant, moderate discomfort on my skin.

• Temporary, moderate side effects that can effect more than my skin.

• Severe side effects that can effect more than my skin.

  1. Note: (a) = Process attributes and levels; (b) = Outcome attributes and levels