The French and American authors of the study include M.M. Ohayon, M.W. Mahowald, Y. Dauvilliers, A.D. Krystal, and D. Léger.
These researchers wanted to test how frequently people walk in their sleep, what they call “nocturnal wandering with abnormal state of consciousness”.
They sampled the general population of the United States, a representative sample of 19,136 noninstitutionalized adults from the U.S. population who were 18 years or older.
The researchers administered the Sleep-EVAL-expert system to these participants, asking they such questions as their life and sleeping habits, general health, and mental disorders.
The results of the study found that nocturnal wandering (NW) occurred in 29.2% of the participants.
The study also found the following:
- In the previous year, NW was reported by 3.6% of the sample population
- One percent of the participants reported 2 or more episodes per month
- Of the partaicipants, 2.6% of them had between 1 and 12 episodes in the previous year
- Family history of NW was reported by 30.5% of the participants.
Page two concludes with further results of the study.