In the Star Wars series, the Jedi have "mind tricks" that simply put a suggestion in another person's mind.
As from these examples, the trick is fairly simple, and clearly even a novice is able to do it. However, Kylo Ren is not your average Padawan. He clearly has quite a bit of strength to do such things as immobilize his opponents and laser bolts, and even survive a blast from a Bowcaster.
How strong does a Jedi need to be to be able to forcibly extract information from another person's mind?