How much involuntary vs conditional stuttering do you experience with your stuttering?

How much involuntary vs conditional stuttering do you experience with your stuttering? The cause of stuttering in 60% of stutterers, is a neurological cause, according to a paper (correct me if I'm wrong). Involuntary: A person with brain damage experiences involuntary stuttering. Conditional: most stutterers expect a stutter or look for (and then visualize) a letter to stutter on. For example, his thought is: "oh no, I'll stutter on this vowel or syllable" or "I'm okay with stuttering, because I can't say it fluently") Question: **In your experience, what is the ratio of involuntary vs conditional stuttering?** ​ (in my experience, it's 1:100. For example, I stutter 50x, and another 5000x times because I keep anticipating/expecting a stutter to make my stutter worse. It makes sense, because by worrying and thinking about the stutter it gets worse. Now you, what is your ratio?)