The phrase "an uncertain cause" is correct and usable in written English.
It can be used when discussing a situation or event where the reason or origin is not clearly defined or known.
Example: "The investigation revealed an uncertain cause for the sudden power outage that affected the entire neighborhood."
Alternatives: "an ambiguous reason" or "an unclear origin".
Variables with an uncertain cause − effect relationship were excluded from the final tables.
It is often carried out as the first step in treatments for sterility of an uncertain cause.
Patients who were lost to followup, who died due to an uncertain cause, or whose date of death could not be confirmed were excluded from the OS analysis.
Sticky-diagnosis bias arises when deaths from an uncertain cause are more likely to be attributed to cancer if there was a previous diagnosis of cancer, especially if the diagnosis was relatively recent.
Information sheets were deemed suitable for 19 patients with a diagnosis of angina (mean age 69, 58% men), 162 with a diagnosis of definite benign non-cardiac pain (mean age 43, 65% men), 61 with a diagnosis of uncertain cause requiring further cardiology investigation (mean age 52, 49% men), and 458 with a diagnosis of uncertain cause suitable for expectant management (mean age 49, 62% men).
Splenic inflammatory pseudotumor is a rare benign lesion of uncertain cause, likely resulting from an unusual inflammatory reparative response to injury such as infection.
Alternatively, it may reflect reluctance to categorise patients with a negative diagnostic assessment as having definite non-cardiac pain, particularly when a less decisive option (uncertain cause) is available.
Doctors there said he arrived in a state of "unresponsive wakefulness" and had suffered a "severe neurological injury" of uncertain cause.
Despite being regarded as a connective tissue disorder of uncertain cause, research has focused predominantly on biochemical changes in the key tissue layer, the transversalis fascia (TF) with little direct analysis of functional tissue mechanics.
In cohort studies, where neurologists assigned diagnosis, headaches of unspecified cause, uncertain cause or a primary headache accounted for the majority of cases in unselected populations.
Schizophrenia is a pervasive neuropsychiatric disease of uncertain cause that affects approximately 1% of the adult population in the United States and Europe.
