I would be surprised if these practices only happened in relation to rapes or sexual assaults. Given that police, prosecutors and indeed politicians in power are generally operating with limited resources and under significant pressure to nevertheless appear as successful as possible and are held accountable in several ways, they probably happen in relation to crimes generally. Whether the situation (in this specific sense) is worse for rape I don't know, but it does seem to at least be a non-insignificant issue within that category.
Likewise--off the top of my head there's that lunatic from Arizona that His Flatulence pardoned. Lots of exceptional clearance of crimes to make the numbers look good. Rape and child abuse get a lot of attention but they're hardly unique in this.
Yes. That said, I'd wonder if rape and sexual assault are on a par (as regards being prone to data error or abuse) with the other crimes that get undercounted or where justice is not obtained (because of Exceptional Clearance or some other reason), or whether there is something about rape and sexual assault that makes it more prone. I'm not saying
exceptionally prone. It could be just
slightly more prone, compared to many other crimes. Or somewhere between the two. I would not be surprised.
For example, for how many other types of crime does it ever come into question that the victim might have consented? I can't think of too many. If you get robbed or physically assaulted in a non-sexual way, is anyone likely to ask that question? For rape and sexual assault, even bruising and scars will not necessarily deflect the question. As such, that might be one aspect of rape and sexual assault that is
additional to all the ones which might affect the data for crimes generally. This could result in more undercounting of incidents.
There might be others. Sure, it's not necessarily cool to be or be seen to be or admit to being a victim for some crimes, especially if you did something that could be considered 'stupid' or which contributed to your risk, but stuff to do with sex can carry stigma and shame, perhaps more judgementally than most. And someone (a victim) when deciding whether or not to pursue a case has to reckon with the distinct possibility that if all does not go well as regards court judgements, and even if it does, they may have to face a grilling about their sex lives and in what ways their behaviour, lifestyle and attitudes (and indeed dress) might have contributed. Ie increased victim-blaming. Which might raise the number of cases where victims don't proceed (and thus increased Exceptional Clearance rates)
Third, a lot of rapes and sexual assaults happen in places where no one else is around, so 'he said she said' is perhaps an especially common problem (which would affect numbers of cases where prosectors decline to proceed and thus increased Exceptional Clearance rates). Compared to other types of crime.
So what I am thinking is that while, yes, 'this sort of problem' exists for all, most or many crimes, it might indeed be worse than many for rape and sexual assault, and if that's true then it would not just be a case of it getting more attention for trivial reasons. The reasons might be valid and relevant. Note that the reasons do not necessarily have to do with sexism, for example.
To try to think of another category of crime which might be on a par in this sense, at least in some ways, in being above averagely prone to reporting errors (undercounting of all sorts, including Exceptional Clearances) perhaps domestic violence? Bullying and harassment in the general sense?
And to try to think of a category of crime which might be
least prone, perhaps murder, which I believe is considered the most reliably reported in crime data and as such often used as a basline for comparisons, as in the article I linked to earlier (
"How to Lie with Rape Statistics: America’s Hidden Rape Crisis") which is well worth reading imo.