When I started 20 years ago, a police officer told me that three-quarters of sexual assault complaints were baseless. Coming from a police officer, that surprised me. I don't think you hear those types of comments as much today. I would say the training investigators and others get is working fairly well. In some cases, victims are allowed to ask for a female investigator or police officer when giving their statement. That has a positive effect.
Training leads to better behaviour. We have seen cases, though, in which police officers did not interpret the guidelines properly, leading to a confrontation with the victim. It wasn't great, but overall, the training is helping.