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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
although not documented
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "although not documented" is correct and usable in written English.
It can be used to indicate that something exists or is true, but there is no formal record or evidence to support it. Example: "The theory is widely accepted, although not documented in any scientific journals."
✓ Grammatically correct
Science
Formal & Business
News & Media
Encyclopedias
Wiki
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
6 human-written examples
Although not documented in the Rfam database, Hrs6 has high sequence conservation in many Enterobacteriaceae species.
Science
Therefore some precautions regarding handling of horses in the hospital had been applied, although not documented, before the MRSA outbreak.
It seems likely (although not documented in SIRS) that most preoperative and postoperative serum creatinine measurements prior to hospital discharge would be performed in the same laboratory, and close in time to one another.
Science
It seems likely (although not documented in POISE-2) that most preoperative and postoperative serum creatinine measurements prior to hospital discharge would be performed in the same laboratory, and most measurements are performed within 2 months of each other.
Science
Although not documented, it is theoretically possible that cytauxzoonosis could be transmitted between domestic cats during blood transfusion, since some cats have persistent blood parasitemia without clinical illness and cats that survive clinical cytauxzoonosis may remain persistently infected [ 12].
Although not documented in our study, it makes thus little doubt that the beneficial effect of candesartan on endothelial function was linked to the improvement of the well-established effect of ARBs on diabetes-induced imbalance of NO and ROS production in the skin vasculature.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
These landmarks, although not documenting the shape of the ventral branches at their base, where they emerge from the aedeagus, allowed us to describe and quantify the shape of the distal end of the ventral branches, and especially the relative length and width of the spines to identify the main axes of shape variation in our QTL mapping population.
Science
The transverse ligament is left intact because it may be important for modulating elastic deformation of the bony acetabulum, although this is not documented in the literature.
Although it is not documented as a formal part of their work, a number of Strong Women Workers also continue to assist women who give birth in their communities.
Science
Although compliance was not documented by pill count, the pharmacist, with access to computer databases, assessed drug adherence by refill frequency, patient interviews, and lab results.
Science
Of the 59% (66/111) children diagnosed as dehydrated none were correctly prescribed ReSoMal; 33% (22/66) were prescribed Oral Rehydration Solution (ORS) while 32% (21/66) were probably incorrectly prescribed intravenous fluids although shock was not documented.
Science
Expert writing Tips
Best practice
Use "although not documented" to acknowledge the absence of formal records while still presenting a possibility or belief. Ensure that the context implies a reason why documentation might be lacking or difficult to obtain.
Common error
Avoid using "although not documented" to introduce information presented as definitive fact. This phrase introduces uncertainty and should be followed by qualifying language.
Source & Trust
79%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "although not documented" functions as an adverbial clause, modifying a main clause by introducing a contrast or concession. It acknowledges the absence of formal records while still presenting related information, as confirmed by Ludwig's examples.
Frequent in
Science
70%
Formal & Business
10%
News & Media
10%
Less common in
Encyclopedias
5%
Wiki
5%
Reference
0%
Ludwig's WRAP-UP
In summary, "although not documented" is a grammatically sound phrase used to introduce information that lacks formal records. As verified by Ludwig, its primary function is to provide a contrast or concession, acknowledging the absence of proof while suggesting possible validity. Though appearing less frequently in general writing, it holds relevance across science, business and news contexts and is best used when presenting information that could reasonably lack documentation but still warrants consideration. Keep in mind Ludwig AI points that it is important not to overstate certainty when using it.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
though lacking formal documentation
Reiterates the lack of official paperwork or records.
even though there's no record
Emphasizes the lack of a formal record more directly.
despite the absence of evidence
Highlights the lack of supporting evidence.
while uncorroborated
Implies a lack of confirmation or support.
though unsubstantiated
Focuses on the lack of proof or validation.
albeit unrecorded
More formal alternative, emphasizing the lack of recording.
even if there's no proof
Simplified version emphasizing the absence of proof.
despite not being formally registered
Highlights the lack of formal registration.
while lacking official confirmation
Emphasizes the absence of official confirmation.
although not formally recognized
Suggests a lack of formal acknowledgement.
FAQs
How can I use "although not documented" in a sentence?
You can use "although not documented" to introduce information that lacks formal proof but is still considered plausible, as in "Although not documented, anecdotal evidence suggests a link between the two events".
What are some alternatives to "although not documented"?
Consider using alternatives like "even though there's no record", "despite the absence of evidence", or "though unsubstantiated" depending on the specific nuance you want to convey.
What's the difference between "although not documented" and "although not proven"?
"Although not documented" indicates a lack of formal record, while "although not proven" suggests a lack of conclusive evidence. They both imply uncertainty, but in different ways. The first relates to a lack of recording, the second to a lack of validation.
Is it appropriate to use "although not documented" in formal writing?
Yes, "although not documented" is acceptable in formal writing, especially when acknowledging limitations or uncertainties in research or analysis. However, ensure the context remains credible and does not rely solely on undocumented claims.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
79%
Authority and reliability
4.1/5
Expert rating
Real-world application tested