This uses a combination of charade (joining word parts) and homophone (sound-alike). A charade connects separate elements, while a homophone uses words that sound like other words.
Look for a short word that can be found directly in the clue, then find what sounds like something the crossword setter did in creating this very clue. The phrase 'as stated' is your homophone indicator.
Answer: INCLUDE | IN (found directly in the clue) + CLUDE (sounds like 'clued', which is what the crossword setter did here). 'As stated' indicates the homophone.