Thanks to "N" for bringing this Globe and Mail article to my attention:
For one in seven, the sandman's a stranger
For one in seven Canadians, the sandman's nightly visits are few and far between, according to a new Statistics Canada study.
According to the report, released Wednesday, about 3.3 million Canadians aged 15 (should be "aged 15 and older" -- jv) have trouble falling or staying asleep, suggesting that they suffer from insomnia.
"Life stress" was discovered to be a common factor in insomnia (duh), but -- interestingly -- "work stress" was not. Other factors include performing shift work, chronic pain conditions (such as arthritis), and obesity. Age was also a factor, with insomnia being more prevalent in older groups.
Here is an article from StatsCan about the study, as well as the 18-page report (PDF, 210 kb).