The phrase "altered method for" is correct and usable in written English.
You can use it when discussing a modified or changed approach to a particular process or task.
Example: "The researchers implemented an altered method for data collection to improve accuracy."
Alternatives: "modified approach for" or "revised technique for".
Mr. Levin pushed Mr. Cavanagh to admit that the bank had altered its method for pricing trades to minimize losses.
A growing number of civil libertarians and customer advocates wants Amazon to fundamentally alter its method for selling Kindle books, lest it be forced to one day change or recall books, perhaps by a judge ruling in a defamation case — or by a government deciding a particular work is politically damaging or embarrassing.
CHANGES TO ALL-STAR FORMAT The N.H.L. announced that it was altering its method for selecting the All-Star teams, switching from the conference-versus-conference format it has used for years to a player draft conducted by the All-Stars, in which captains selected by the players will determine the teams.
Rather than offer specific moral prescriptions, he is more interested in altering the method for how we might eventually find them.
When prey are too large to be completely enclosed within the foot, constriction is no longer a viable immobilisation strategy, and because the prey cannot be fully grasped, the raptor must alter its method for preventing escape.
I altered her method a little for my kitchen.
It was evident that normalization of the data using the B-score method altered signal intensities for controls as the number of hits increased on plates (Fig. 6a).
Fluidic flow control is a method for altering flows over aerodynamic surfaces which does not rely upon altering the physical shape of the surface (typically through moving control surfaces such as flaps).
Previous studies have shown that altering or interchanging the 3'UTR of a gene is an effective method for altering gene expression in cells and in animals [24] [27].
The focus on victims has been widely praised as a method for altering people's attitudes about the risks of drunken driving.
