Speech disorders and language disorders are the same thing, that's why we call them "Speech and Language Disorders," and therefore share the same prevalence rates.
This statement is not entirely accurate. While speech and language disorders are often grouped together under the umbrella term "Communication Disorders," they are not the same thing.
Speech disorders refer to difficulties with the production of speech sounds, whereas language disorders involve difficulties with the understanding and/or use of language.
While it is true that speech and language disorders can co-occur and may share some similarities in terms of prevalence rates, they are distinct conditions with different diagnostic criteria and treatment approaches. It is important to recognize and differentiate between the two in order to provide appropriate interventions for individuals with these disorders.