I’m not sure about statistics. In April 2010 I saw a consultant who instantly dx me with psychosis and not long after with schizophrenia. I battled with her for so long but my denial was a symptom of schizophrenia. I was all over forums but people told me dx didn’t matter. But to me it did as I didn’t feel any relief from symptoms and it wasn’t making sense. It’s true a lot of people with mental illness go into denial about their dx and think they are well enough to go off meds. I denied it but I always accepted I wasn’t well and needed meds. I just wanted to feel relief though which I only felt after getting on the mood stabiliser.
I’m not going to lie I still struggle with denial. I don’t think I have bipolar which I used to believe I had after being diagnosed with schiz. I think sometimes was schiz correct ?
Were all different and react different. All we can do is gather as much information as possible and decide for ourselves where we fit in. I’m sure you have heard it before , but you can see 10 different Doctors and get 10 different opinions. Been through it myself.
Abilify seems to be working for me, and after everyone’s opinion I think I am schizophrenia with some Bi Polar and I do get depression about every 10 years, not sure why such a large gap, but it happens
I went through a denial phase. I wanted it to be everything but sz, including cancer. The olanzapine made me down at times… Like I got worse before better, but with the drugs. After Celexa I had no problems with denial or depressed down moods from olanzapine. But the celexa really screwed me up… Like weird and not able keep any secrets. I think if people are happy keeping their mouth shut then so be it. Didn’t really like my whole life on display, abusive past and all.
Every psychiatrist that I saw became confused when it came to my diagnosis.
My current psychiatrist gave up and now tells me that both schizoaffective disorder and bipolar with psychotic features fits.
As long as the meds are working, the diagnosis is not so important.
I think personally that schizoaffective disorder is a better fit for me, because I tend to have Negative symptoms and some disorganized thinking.
True though I still get scared I’m gonna get psychotic after getting on my antipsychotic. Just needed to take the chance 
I’ve cycled through the stages a few times. Currently back in denial of sx, dx and that meds are working. I feel very…hopeless.