You are seeing a 60-year-old male who has presented to the GP with his wife as she is concerned about his excessive daytime sleepiness. She states that she has witnessed choking noises when sleeping and states he has been increasingly moody. He also has a reduced sex drive and sweats excessively through the night. You suspect that this patient has obstructive sleep apnoea syndrome and ask him to complete an Epworth sleepiness questionnaire. At which score does the questionnaire indicate abnormal daytime sleepiness?