Table 2 Number and percentage of participants reporting various primary headache characteristics
| Â | N (%) |
|---|---|
Total (5038) | 519(10.30) |
Headache characteristic | |
 Pulsating | 66(12.72) |
 Aching | 69(13.29) |
 Distending pain and tightening | 270(52.02) |
 Others | 114(21.97) |
Attack duration | |
  < 30 min | 64(12.33) |
 30 min to 4 h(≥30 min and <4 h) | 142(27.36) |
 4–72 h (≥4 h and <72 h) | 43(8.29) |
  ≥ 72 h | 48(9.25) |
 Undetermined | 222(42.77) |
Associated symptoms | |
 Nausea and/or vomiting | 84(16.18) |
 Phonophobia and/or photophobia | 165 (31.80) |
 Lacrimation/conjunctival injection | 3(0.58) |
 Not reported | 267(51.44) |
Headache days | |
 Occasional (<1 day/month) | 216(41.62) |
 Episodic (>1 day/month& < 15 days/month) | 112 (21.58) |
 Chronic (≥15 days/month) | 94(18.11) |
 Attack everyday | 97(18.70) |
Headache aggravated by physical activity | |
 Yes | 104(20.10) |
 No | 415(79.90) |
Effect on daily life | |
 Daily life was normal | 267(51.45) |
 Part of daily life was affected | 201(38.72) |
 Could not do anything | 51(9.83) |
Number of kinds of headache | |
 One kind | 366(70.52) |
 Two kinds or more | 54(10.40) |
 Indeterminate | 99(19.08) |
Location of headache | |
 Unilateral | 254(48.95) |
 Bilateral | 181(34.87) |
 Indeterminate | 84(16.18) |
Similar attack in family history | |
 Yes | 61(11.75) |
 No | 369(71.10) |
 Indeterminate | 89(17.15) |
VAS score | |
 1–3(≥1& ≤ 3) | 313(60.30) |
 4–6(≥4& ≤ 6) | 158(30.44) |
  ≥ 7 | 48(9.26) |