"varying effect" is a valid phrase in written English and can be used in most contexts.
For example, "The varying effects of climate change are becoming more evident in the Arctic regions."
The calamity of 9/11 figures in a handful of these stories, to varying effect.
Efforts at renewal and revitalization were undertaken by many Northern cities, with varying effect.
Each has written a track on Bassey's new record, The Performance, and played it here, to varying effect.
SHINIQUE SMITH / MICKALENE THOMAS Two artists take on pop culture and Pop stylings to excellent and widely varying effect.
I have spoken before on the subject of black representation in the UK film and TV industry, to varying effect.
Terrain parameters had varying effect on distribution of soil properties.
The differential time-varying effect model (DTVEM): a tool for diagnosing and modeling time lags in intensive longitudinal data.
We used Cox proportional hazards models to measure the time-varying effect of depressive symptoms on the onset of troublesome neck and low back pain.
Time-varying effect modeling was used to explore whether the within-day fluctuations in stress are related to perceived hunger assessed on a momentary basis.
Fourth, some predictors, such as teacher behaviour, were assessed at only two occasions, which limits the potential time-varying effect.
The last term on the right side represents the time-varying effect of λ, as explained below.
