The phrase "a factor in common" is correct and usable in written English.
It can be used when discussing shared characteristics or elements between two or more subjects.
Example: "The two projects had a factor in common that contributed to their success: strong teamwork."
Alternatives: "a shared element" or "a common aspect".
It is shown that if there exists an orthogonal array OA(n−ℓ,m,2,3), ℓ= 1,2, then there exists an n-run type 1 optimal fractional factorial plan for a 2m experiment under a model that includes the mean, all main effects and all two-factor interactions with a factor in common.
The arrays in within-groups have a factor in common, e.g. biological replicates.
Other researchers are now investigating whether mosaicism is a factor in more common diseases, like schizophrenia.
And it now appears that the two men had a third factor in common: both used performance enhancing drugs.
That ovulation is a predisposing factor in common (surface) epithelial ovarian cancer is widely recognized; however, the molecular events which underscore early-stage disease have not been elucidated.
Kaiser et al. showed that the patients with NTG with rapid progression of VF damage and excavation of the optic nerve head had the low systemic blood pressure as a risk factor in common, with 65% of them suffering from vasospasm [ 27, 39].
Generational differences in the approach to openness on the Internet will also be a factor in coming to common understandings of how and when it is appropriate to contact colleagues, superiors or clients.
Yet, all of the women maintained one factor in common: a role in shaping culture.
The existence of a great and menacing culture perceived as importantly different was thus a factor in the formation of a common late Archaic Greek culture.
The series did encounter further legal problems when some references to the fictional businessman Alan Roe were removed because of a perceived similarity to Sir John Hall, a Newcastle businessman who had a number of factors in common.
Each of these New York cases, at least at the early stage, had a number of factors in common.
