Philpot M, Rottenstein M, Burns A, Der G
Section of Psychogeriatrics, Guy's Hospital, London.
Br J Psychiatry. 1989 Nov;155:662-6. doi: 10.1192/s000712500001816x.
Variation in quarter of birth was examined in patients with a clinical diagnosis of AD. There was a significant excess of first-quarter births among AD patients as compared with the expected birth rates derived from an age-matched census sample. This finding was due entirely to the significant excess of first-quarter births in AD patients without a family history of dementia. No seasonal variation was found in the birth dates of other clinical groups.
