Supporting this result, the regression model indicated that a 1-unit increase in variable A results in a 5% increase in support for variable B. This coefficient was not significant, p = 0.30, p < 0.05.

The sentence changes from past to present tense. Should 'results' be 'resulted'. Or is it OK?

anonymousShould 'results' be 'resulted'. Or is it OK?

No. It's OK. The present is used to indicate a general relationship.