{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T19:07:38Z","timestamp":1777489658713,"version":"3.51.4"},"reference-count":55,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2010,4,26]],"date-time":"2010-04-26T00:00:00Z","timestamp":1272240000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cephalalgia"],"published-print":{"date-parts":[[2010,12]]},"abstract":"<jats:p>Our aim was to estimate the prevalence of nocturnal awakening with headache (NAH) in the population of S\u00e3o Paulo City according to gender, age (20\u201380 years old) and socioeconomic classes and its relationship to sleep disorders, sleep parameters, anxiety, depression, fatigue, life quality and obesity. We used a population-based survey with a representative three-stage cluster sample. Questionnaires and scales were applied face-to-face, and polysomnography was performed in 1101 volunteers, aged 42\u2009\u00b1\u200914 years, 55% women. The complaint of NAH occurring at least once a week had a prevalence of 8.4%, mostly in women, obese subjects and those aged 50\u201359 years-old. We observed associations of NAH with insomnia, restless leg syndrome (RLS), nightmares and bruxism, but not obstructive sleep apnea syndrome. In a logistics regression model, risk factors for NAH were female gender, odds ratio (OR) (95% confidence interval [CI]) 4.5 (2.8\u20137.3); obesity, OR 1.9 (1.1\u20133.3); age between 50 and 59 years, OR 2.4 (1.2\u20134.7); severe anxiety, OR 8.1 (3.6\u201318.1); RLS, 2.7 (1.2\u20135.6); and nightmares, 2.2 (1.3\u20133.7). Our study shows that NAH was highly prevalent in the population of S\u00e3o Paulo and suggests that this phenomenon has specific characteristics with specific risk factors: obesity, RLS and nightmares.<\/jats:p>","DOI":"10.1177\/0333102410368440","type":"journal-article","created":{"date-parts":[[2010,4,26]],"date-time":"2010-04-26T20:55:14Z","timestamp":1272315314000},"page":"1477-1485","source":"Crossref","is-referenced-by-count":20,"title":["Nocturnal awakening with headache and its relationship with sleep disorders in a population-based sample of adult inhabitants of S\u00e3o Paulo City, Brazil"],"prefix":"10.1177","volume":"30","author":[{"given":"Ligia Mendon\u00e7a","family":"Lucchesi","sequence":"first","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo, Brazil."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose Geraldo","family":"Speciali","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Campus Ribeir\u00e3o Preto, Brazil."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rogerio","family":"Santos-Silva","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo, Brazil."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose Augusto","family":"Taddei","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo, Brazil."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergio","family":"Tufik","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo, Brazil."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lia Rita Azeredo","family":"Bittencourt","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo, 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