[Futuregen] Cohort paper [revised version]

Thu Nov 25 16:48:21 CET 2021

Dear Stefan and Johan,
I’ve read through as well – well done! I don’t have anything else to add,
best regards,
Selma

Von: Futuregen <futuregen-bounces at euro.centre.org> Im Auftrag von Ricardo Rodrigues
Gesendet: Mittwoch, 24. November 2021 22:28
An: Susan Phillips <phillip at queensu.ca>; Stefan Fors <stefan.fors at ki.se>
Cc: LIST: FutureGEN <futuregen at euro.centre.org>
Betreff: Re: [Futuregen] Cohort paper [revised version]

Dear Stefan, dear Johan,

I read through the changes and replies to the reviewers and I really did not have anything to add, except a couple of suggestions on the "if you really need to" basis below.

Susan mentioned the need for a reference for the use of the square root equivalization: OECD (2011), Divided We Stand – Why Inequality Keeps Rising, Paris.    (www.oecd.org/social/inequality.htm<http://www.oecd.org/social/inequality.htm> / www.oecd.org/fr/social/inegalite.htm<http://www.oecd.org/fr/social/inegalite.htm> ).

I think the reviewers were quite positive on their assessment of the paper in the first place and your replies are to the point and very good.
You argued well enough for using a dichotomous variable. Reviewer 1 was the one who raised this issue and she/he was also the one who thought the results section was already too long: if you want, you can also mention this (text and annexes already too long, as pointed by the said reviewer 😉) to reinforce the use of the dichotomous option only. I would keep the OLS out.
Reviewer 2 mentions the inclusion of complete cases only as a sensitivity analysis - and I think you purposely (and wisely) steered away from opening that can of worms and left this more or less unanswered. 🙂 One argument I could think of, for not using only complete cases (apart from exacerbating attrition), is the fact that we are interested in cohort differences rather than exclusively on longitudinal developments.

It looks very good!

Best wishes,
Ricardo

________________________________
From: Futuregen <futuregen-bounces at euro.centre.org<mailto:futuregen-bounces at euro.centre.org>> on behalf of Susan Phillips <phillip at queensu.ca<mailto:phillip at queensu.ca>>
Sent: Tuesday, November 23, 2021 9:00 PM
To: Stefan Fors <stefan.fors at ki.se<mailto:stefan.fors at ki.se>>
Cc: LIST: FutureGEN <futuregen at euro.centre.org<mailto:futuregen at euro.centre.org>>
Subject: Re: [Futuregen] Cohort paper [revised version]

Hi Stefan,

Your response to reviewers is really clear and covers everything well. I have made a few language edits and a comment or two in the manuscript (attached). I don’t feel like the wisest one to decide about the inclusion of the sensitivity analyses. My sense, from what you have written would be to not include.

Thanks for including me.

Susan

On Nov 22, 2021, at 8:59 AM, Stefan Fors <stefan.fors at ki.se<mailto:stefan.fors at ki.se>> wrote:

Dear friends,

I hope all is well with you! We have now tried to address the comments made by the reviewers for the cohort paper. Please find the revised manuscript, tables and figures, appendix, and responses to the reviewers enclosed. For those of you that are co-authors on the paper – read the revisions and rebuttal letter and let us know what you think (if you have time). The deadline for submission is Friday, so I would need any comments by Thursday in order to make any changes to the manuscript.

One thing Johan and I have been discussing is whether we should include figures from our sensitivity analyses using ordinal indicators of ADL and IADL and OLS-regressions (see attached file) in the response to the reviewers (not for publication). On the one hand, this would serve as a response to their comments on the dichotomization of the outcomes and potential sensitivity analyses. On the other hand, we may invite a whole new host of comments (“why are these not mentioned in the paper?” “why are you using OLS-regressions for ordinal variables?” etc.). So, let us know if you have any opinions on this issue as well.

All the best,

Stefan

Stefan Fors | Forskare

Aging Research Center | Karolinska Institutet
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Susan Phillips MD, CCFP
Research Director, Centre for Studies in Primary Care
Rosser Research Chair, Family Medicine
Director QuARMS
Queen’s U.

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