Q. 16 - Nutritional supplements, including Vitamin D: use before

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Two respondents skipped this question.





So the majority responded "None of the above." - No vitamins, including Vitamin-D, and no tests of blood levels.


Of course adding all those responses that are other than "None of the above," presents a sizeable contact with nutritional supplements in some form.


The key question is of course, do they make a difference? And more specifically, in the setting of "long-term" COVID-19 ? Are marketed nutritional supplements purchase simply driven by a desire to do all that one can to stay "healthy"?




As already mentioned, detailed comparisons are being saved for later, to allow more efficient "first pass" presentation of the questionnaire and its preliminary results.


But here is a preview of such comparisons.


Does taking nutritional supplements make a difference

in current outcome from the "long-term" COVID-19 illness in this sample of respondents?

Here first are those who ...





And those who ...




Were there group differences? A total of 118 useable responses. 


Age? : No significant difference (NSD).

Gender? : Chi² = 1,060: NSD


Were there outcome differences in mean values obtained with or without supplements?


Duration of illness : No difference as a function of supplement use.

Delay of diagnosis : One day shorter with supplements, but not a significant difference.

Time to start feeling better: p = 0.5403: NSD

Time from start of illness to feeling worse again: NSD


And while not presented here, but later, no statistically significant differences in number of symptoms or organ systems involved as a function of supplement use.


Were any of these analyzd results close enough, that doubling the sample size (or even more) might make a difference? Probably not.


Other specific respondent subgroups, for example those with Vitamin-D serum levels that were normal or not before illness, will be looked at subsequently. 


Can these supplements change energy levels at a cellular level? Nothing here to suggest that is happening, but this is not a controlled study of specific supplements. 



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