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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
the underlying factor is that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "the underlying factor is that" is correct and usable in written English.
It can be used to introduce a key reason or explanation for a situation or phenomenon. Example: "In analyzing the economic downturn, the underlying factor is that consumer confidence has significantly decreased."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
the cause of this is that
this can be ascribed to the fact that
the reasoning behind this is that
it is attributable to the fact that
the theory behind this is that
the crucial element is
this can be attributed to the fact that
the primary driver is that
this is because
the basic reason is that
the philosophy behind this is that
the main reason is that
the fundamental reason is that
the reason is
the reasons for this is that
the reason behind this is that
the rationale behind this is that
the reason behind is that
it is due to the fact that
the thinking behind this is that
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
1 human-written examples
A: I think the underlying factor is that the status quo is not sustainable and it's not acceptable.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Barry says the most significant underlying factor is that each state regulates insurance differently, and those regulatory differences account for some of the variations in the study's findings.
News & Media
One underlying factor is that US population growth has simply outstripped our ability to train surgeons, and this problem will only get worse as the baby boomers move into the cancer-incidence age-brackets over the next several years.
Science
All items had loading values greater than 0.40 and loaded on only one factor, suggesting that the underlying factors are meaningful.
With the large degree of clustering of disorders in some individuals, it is possible that some other underlying factor is the main reason behind the predictive value of LBP.
The underlying factor might be that this organizational model combines size of scale advantages with characteristics of strong primary care, such as high accessibility, continuity and coordination of care [ 16].
Science
The concordance of the QTL between the two populations (one intraperitoneally injected and the other given a form of bath challenge) suggests that the main underlying factors are unlikely to be related to barrier function.
Science
The constructed, hypothesized A&S Qdomains, matched with that of the underlying factors that were found by the factor analysis, provided that the items of one hypothesized domain, distance estimation, were distributed over two factors, according to whether they related to near- or far-distance estimation (Table 1, Q 4-Q 13).
Important underlying factors are the processes that anchor and embed otoconia within the otoconial membrane; these likely involve specific interactions between otoconial proteins and the matrix proteins of the acellular gel.
Science
The underlying factors that are influencing Malay reserve land owners against developing the land need to be further studied.
These 6 variables, representing the 3 behavioural tests, were then submitted to obliquely-rotated (Oblimin direct) factor analyses to assess the underlying factors that are measured in the behavioural test battery.
Expert writing Tips
Best practice
When using "the underlying factor is that", ensure it introduces the most fundamental and explanatory reason for the situation you are describing. Avoid using it for secondary or less significant factors.
Common error
Avoid using "the underlying factor is that" when a simpler phrase like "because" or "the reason is" would suffice. The phrase is best suited for more complex or nuanced explanations.
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "the underlying factor is that" functions as a connector to introduce the primary reason or cause behind a situation or event. It signals that the following statement is the most fundamental explanation.
Frequent in
Science
34%
News & Media
33%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
33%
Ludwig's WRAP-UP
The phrase "the underlying factor is that" is used to introduce a primary cause or reason, often in complex situations where the explanation requires some analysis. While grammatically correct and usable, as Ludwig AI states, it is relatively rare, mostly used in scientific and news contexts. When writing, ensure it introduces a truly fundamental reason and that simpler alternatives aren't more appropriate. Related phrases like "the primary reason is" and "the main cause is" can often be used depending on the specific context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the primary reason is
Replaces "factor" with "reason", focusing on the main cause.
the main cause is
Substitutes "factor" with "cause", emphasizing the principal reason.
the key reason is that
Adds "key" to emphasize the importance of the reason.
the principal cause is
Replaces "underlying factor" with "principal cause", indicating a major factor.
the root cause is that
Uses "root cause" to highlight the fundamental source of the issue.
the basic reason is that
Emphasizes the fundamental nature of the reason.
the fundamental reason is that
Highlights the essential nature of the reason.
the crucial element is
Focuses on the most critical aspect or element.
the core issue is that
Replaces "factor" with "issue", emphasizing the central problem.
the most important aspect is that
Highlights the supreme importance of an aspect.
FAQs
How can I use "the underlying factor is that" in a sentence?
Use "the underlying factor is that" to introduce a fundamental reason or cause. For example, "The underlying factor is that consumer confidence has significantly decreased".
What's a simpler alternative to "the underlying factor is that"?
You can use simpler phrases like "the main reason is", "the key issue is", or simply "because" depending on the context.
When is it appropriate to use "the underlying factor is that" versus "the main reason is"?
"The underlying factor is that" is suitable when explaining a more complex situation requiring a deeper understanding of the root cause. "The main reason is" is appropriate for simpler explanations.
What are some phrases similar to "the underlying factor is that"?
Similar phrases include "the primary reason is", "the principal cause is", and "the root cause is that".
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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
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested