"differed across regions" is a correct and usable phrase in written English.
It is used to describe when something varies or is different in different regions or geographical areas. For example, "The cost of living differed across regions, with some places having higher prices than others."
ECPMs [effective payment per thousand views] differed across regions etc, but averaged between $4-$4-$7
The standardized proportion of use of interventions among ICU patients also differed across regions and municipalities.
Response rates differed across regions (F (2194) = 4.13, p < .05), with studies undertaken in Asia securing higher response rates (51%) compared to those in Europe (38%) and North America (45%).
Socio-environmental factors had strong impacts on the prevalence of childhood allergies; but these impacts differed across regions.
Our focus was on themes that differed across regions and not those that emerged from interviews in all regions, such as the importance of having updated knowledge about lactation processes, the training of personnel, antenatal information of the mothers, and the practice of skin-to-skin care and peer-to-peer support.
Despite increased awareness from the medical community and public that variations in the intrapartum intervention need to be addressed, interventions among this study cohort differed across region and over time.
But in an indication of how regulations may differ across regions, the office of Senator Mark Begich of Alaska wrote, "Unfortunately, our office is prohibited by law from intervening in legal matters and cannot interfere with an investigation".
However, these trends largely differ across regions (e.g. developing economies have mostly reformed collective bargaining).
As such, this study examines how methodological choices differ across regions.
The specific Triple Helix models for innovation may differ across regions, depending on local economic development conditions.
Obstacles to female empowerment differ across regions, so a company must identify the relevant issues in each market.
