Title: Return on Investment of Internet Delivered Exposure Therapy for Irritable Bowel
Syndrome: A Randomized Controlled Trial
Version: 3 Date: 15 Apr 2021
Reviewer:  Daniel Keszthelyi
Reviewer's report:
The paper by Wallen et al. is a timely, well-written piece of work describing the cost-
effectiveness of the exposure-element to CBT in IBS. The findings support the notion that
the exposure element is a worthwhile addition to CBT. The authors are to be congratulated
on the soundness of the data collection (digital systems, incl. well-establish Trimbos/iMTA
questionnaire) and analysis.
I only have some minor comments.
1. The manuscript is structured in a somewhat unconventional way: the introduction is quite
long, whereas the discussion is rather brief (in fact, shorter than the introduction). Please consider
restructuring.
2. Something that struck me was the costs for GP consultation (over 380 USD), even more
expensive than consultation with a medical specialist. Could you please elaborate?
3. Along the same line, it should me mentioned as a limitation that the current analysis may only
be applicable to the Swedish situation as healthcare financing (and in particular psychological
care) differs across countries, even within Europe.
4. Do the authors have any data as to the satisfaction of the healthcare provider regarding this
type of delivery of healthcare?
Title: Return on Investment of Internet Delivered Exposure Therapy for Irritable Bowel
Syndrome: A Randomized Controlled Trial
Version: 3 Date: 15 Apr 2021
Reviewer:  Daniel Keszthelyi
Reviewer's report:
The paper by Wallen et al. is a timely, well-written piece of work describing the cost-
effectiveness of the exposure-element to CBT in IBS. The findings support the notion that
the exposure element is a worthwhile addition to CBT. The authors are to be congratulated
on the soundness of the data collection (digital systems, incl. well-establish Trimbos/iMTA
questionnaire) and analysis.
I only have some minor comments.
1. The manuscript is structured in a somewhat unconventional way: the introduction is quite
long, whereas the discussion is rather brief (in fact, shorter than the introduction). Please consider
restructuring.
2. Something that struck me was the costs for GP consultation (over 380 USD), even more
expensive than consultation with a medical specialist. Could you please elaborate?
3. Along the same line, it should me mentioned as a limitation that the current analysis may only
be applicable to the Swedish situation as healthcare financing (and in particular psychological
care) differs across countries, even within Europe.
4. Do the authors have any data as to the satisfaction of the healthcare provider regarding this
type of delivery of healthcare?
Please review this paper.
user
Title: Return on Investment of Internet Delivered Exposure Therapy for Irritable Bowel
Syndrome: A Randomized Controlled Trial
Version: 3 Date: 15 Apr 2021
Reviewer:  Daniel Keszthelyi
Reviewer's report:
The paper by Wallen et al. is a timely, well-written piece of work describing the cost-
effectiveness of the exposure-element to CBT in IBS. The findings support the notion that
the exposure element is a worthwhile addition to CBT. The authors are to be congratulated
on the soundness of the data collection (digital systems, incl. well-establish Trimbos/iMTA
questionnaire) and analysis.
I only have some minor comments.
1. The manuscript is structured in a somewhat unconventional way: the introduction is quite
long, whereas the discussion is rather brief (in fact, shorter than the introduction). Please consider
restructuring.
2. Something that struck me was the costs for GP consultation (over 380 USD), even more
expensive than consultation with a medical specialist. Could you please elaborate?
3. Along the same line, it should me mentioned as a limitation that the current analysis may only
be applicable to the Swedish situation as healthcare financing (and in particular psychological
care) differs across countries, even within Europe.
4. Do the authors have any data as to the satisfaction of the healthcare provider regarding this
type of delivery of healthcare?
assistant