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Table 1 One-year prevalence of different headache types1 in HUNT4

From: Time trends of major headache diagnoses and predictive factors. Data from three Nord-Trøndelag health surveys

Types of headacheWomen (n = 23,635)
%, (95% CI)
Men (n = 17,825)
%, (95% CI)
Overall, crude2 (n = 41,460)
%, (95% CI)
Adjusted for age and sex3%, (95% CI)
Headache sufferer45.0 (44.0 to 46.0)26.9 (25.9 to 27.9)37.2 (36.5 to 37.9)37.3 (37.0 to 37.6)
Migraine15.3 (14.8 to 15.7)5.7 (5.3 to 6. 0)11.1 (10.8 to 11.4)11.2 (10.9 to 11.5)
Episodic migraine < 15 days/month14.0 (13.6 to 14.5)5.3 (5.0 to 5.6)10.3 (10.0 to 10.6)10.3 (10.0 to 10.6)
Chronic migraine (≥15 days/month)1.1 (1.0 to 1.3)0.3 (0.2 to 0.4)0.8 (0.7 to 0.9)0.8 (0.7 to 0.9)
Migraine with aura8.2 (7.8 to 8.5)2.8 (2.5 to 3.0)5.8 (5.6 to 6.1)5.9 (5.7 to 6.2)
Migraine without aura7.1 (6.8 to 7.4)2.9 (2.7 to 3.2)5.3 (5.1 to 5.5)5.3 (5.1 to 5.5)
Probable migraine5.8 (5.5 to 6.1)3.5 (3.2 to 3.7)4.8 (4.6 to 5.0)4.8 (4.6 to 5.0)
TTH4% (95% CI)23.1 (22.6 to 23.7)17.4 (16.8 to 17.9)20.7 (20.3 to 21.1)20.7 (20.3 to 21.1)
Infrequent episodic TTH < 1 days/month5.7 (5.3 to 6.0)5.3 (4.9 to 5.6)5.5 (5.3 to 5.7)5.5 (5.3 to 5.7)
Episodic TTH 1–14 days/month16.2 (15.7 to 16.7)11.3 (10.8 to 11.7)14.1 (13.7 to 14.4)14.1 (13.7 to 14.4)
Chronic TTH (> 14 days/month1.1 (1.0 to 1.3)0.8 (0.7 to 0.9)1.0 (0.9 to 1.1)1.0 (0.9 to 1.1)
Medication overuse headache0.3 (0.3 to 0.4)0.2 (0.1 to 0.2)0.3 (0.2 to 0.3)0.3 (0.2 to 0.3)
Unclassified headaches50.8 (0.7 to 0.9)0.3 (0.2 to 0.4)0.6 (0.5 to 0.7)0.6 (0.5 to 0.7)
  1. 1 Mutually exclusive headache diagnoses: The diagnosis of definite migraine excluded the diagnosis of TTH, and TTH excluded probable migraine. The diagnosis of MOH excluded the diagnoses of chronic TTH, chronic migraine and chronic unclassified headache.
  2. 2 Crude: Not age- and sex-adjusted
  3. 3 Adjusted for age- and sex using all invited participants in HUNT3 as the standard population
  4. 4 TTH = tension-type headache
  5. 5 Unclassified headache: Not fulfilling criteria of migraine, probable migraine or THH