The phrase "contributory factor for" is correct and usable in written English.
It can be used when discussing elements that contribute to a particular outcome or situation.
Example: "The lack of funding was a significant contributory factor for the project's failure."
Alternatives: "contributing factor to" or "factor contributing to".
The jury today singled out Henri Paul's drink driving as a contributory factor for the crash in the Alma tunnel.
Economics, law, history and maths all suffered, with a fall-off in career prospects a contributory factor for these three subjects.
Approximately fifteen percent of couples have difficulty conceiving, with male infertility being the contributory factor for about half of all cases of infertile couples.
This topographical condition is considered to be an important contributory factor for landslides in Tandikat.
Interestingly, the President-Elect appears to be identifying poor procurement techniques as the chief contributory factor for creating a 'disastrous' drug sector.
Dissolution of soluble salts could be a major contributory factor for groundwater salinity especially in the boreholes, whereas evaporation could also account for salinity in the shallow wells in the study area.
One of the key contributory factors for accident involvement is misjudgment of approach speed (Department for Transport, 2010).
Poor diet, a lack of exercise, stress and pollution are cited as the main contributory factors for the majority of cancers of the lung, breast and prostate.
The results indicated that PEG to salt weight ratio and fermentation broth loaded mass was the major contributory factors for β-galactosidase partitioning.
The current findings add substantially to our understanding of contributory factors for anxiety feelings experienced by engineering students in delivering technical oral presentations in English.
