The phrase 'confound with' is correct and usable in written English.
It means to confuse something with something else, or to mix things up. For example, you could say: "I confounded the appointment times with the meeting times, so I ended up arriving late."
That is, some effects of the experiment may confound with each other and cannot be clearly identified.
Although low to moderate correlations were found, the structure of CPS could confound with a general factor, which underlies the four latent dimensions.
We propose the concept of math-science coherence and explore whether society-, curriculum-, and school-related factors confound with its relation to problem solving.
Using community or even regional fixed effects is also not doable since the pollution episode in Indonesia occurred on such a large scale that even regional fixed effects confound with the pollution variable and render it insignificant.
Several of Haynes' films, such as "Superstar: The Karen Carpenter Story" (made largely with Barbie dolls) and "I'm Not There" (where six actors played Bob Dylan), confound with their nontraditional narrative techniques.
To identify genes that may potentially confound with gene signatures in DNA microarray data.
Analysts predicted a debut weekend between $115-135m 115-135mconfounded with a record-butakitg $208.8m.
In Manhattan, the Knicks are confounded with their own issues that could hurt their chances of wooing James.
This is a beauty that confounds with contrasts, sparkling and balletic under Zimerman's fingers.
This plant was confounded with Swiss chard.
Furthermore, there was minimal confounding with exposure to medication.
