Table 1.
Characteristics of people with migraine
| Variables | Analysis population (N = 21,480) | Migrainea (N = 691) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Migraine total (N = 691) | Chronic headache (N = 19) | Episodic headache (N = 672) | |||||||||
| n | % | n | % | n | % | n | % | ||||
| Sex | Male | 15,802 | 73.6 | 272 | 39.4 | 5 | 26.3 | 267 | 39.7 | ||
| Female | 5,678 | 26.4 | 419 | 60.6 | 14 | 73.7 | 405 | 60.3 | |||
| Age, Total | 19–29 years | 1,151 | 5.4 | 60 | 8.7 | 1 | 5.3 | 59 | 8.8 | ||
| 30–39 years | 2,944 | 13.7 | 184 | 26.6 | 7 | 36.8 | 177 | 26.3 | |||
| 40–49 years | 6,095 | 28.4 | 262 | 37.9 | 7 | 36.8 | 255 | 37.9 | |||
| 50–59 years | 8,265 | 38.5 | 175 | 25.3 | 4 | 21.1 | 171 | 25.4 | |||
| ≥ 60 years | 3,025 | 14.1 | 10 | 1.4 | 0 | 0.0 | 10 | 1.5 | |||
| Male | 19–29 years | 675 | 3.1 | 19 | 7.0 | 0 | 0.0 | 19 | 7.1 | ||
| 30–39 years | 1,921 | 8.9 | 84 | 30.9 | 3 | 60.0 | 81 | 30.3 | |||
| 40–49 years | 4,035 | 18.8 | 94 | 34.6 | 2 | 40.0 | 92 | 34.5 | |||
| 50–59 years | 6,483 | 30.2 | 71 | 26.1 | 0 | 0.0 | 71 | 26.6 | |||
| ≥ 60 years | 2,688 | 12.5 | 4 | 1.5 | 0 | 0.0 | 4 | 1.5 | |||
| Female | 19–29 years | 476 | 2.2 | 41 | 9.8 | 1 | 7.1 | 40 | 9.9 | ||
| 30–39 years | 1,023 | 4.8 | 100 | 23.9 | 4 | 28.6 | 96 | 23.7 | |||
| 40–49 years | 2,060 | 9.6 | 168 | 40.1 | 5 | 35.7 | 163 | 40.2 | |||
| 50–59 years | 1,782 | 8.3 | 104 | 24.8 | 4 | 28.6 | 100 | 24.7 | |||
| ≥ 60 years | 337 | 1.6 | 6 | 1.4 | 0 | 0.0 | 6 | 1.5 | |||
| Years lived with headache | -5 years | - | - | 57 | 8.2 | 2 | 10.5 | 55 | 8.2 | ||
| 6—10 years | - | - | 54 | 7.8 | 3 | 15.8 | 51 | 7.6 | |||
| 11—15 years | - | - | 50 | 7.2 | 2 | 10.5 | 48 | 7.1 | |||
| 16—20 years | - | - | 57 | 8.2 | 2 | 10.5 | 55 | 8.2 | |||
| 21—25 years | - | - | 49 | 7.1 | 1 | 5.3 | 48 | 7.1 | |||
| 26—30 years | - | - | 34 | 4.9 | 2 | 10.5 | 32 | 4.8 | |||
| ≥ 31 years | - | - | 62 | 9.0 | 4 | 21.1 | 58 | 8.6 | |||
| Area of residence | Hokkaido | - | - | 6 | 0.9 | 0 | 0.0 | 6 | 0.9 | ||
| Tohoku | - | - | 23 | 3.3 | 0 | 0.0 | 23 | 3.4 | |||
| Kanto-Koshinetsu | - | - | 399 | 57.7 | 9 | 47.4 | 390 | 58.0 | |||
| Hokuriku | - | - | 8 | 1.2 | 0 | 0.0 | 8 | 1.2 | |||
| Chubu | - | - | 86 | 12.4 | 4 | 21.1 | 82 | 12.2 | |||
| Kinki | - | - | 121 | 17.5 | 4 | 21.1 | 117 | 17.4 | |||
| Chugoku | - | - | 10 | 1.4 | 1 | 5.3 | 9 | 1.3 | |||
| Shikoku | - | - | 10 | 1.4 | 0 | 0.0 | 10 | 1.5 | |||
| Kyushu | - | - | 28 | 4.1 | 1 | 5.3 | 27 | 4.0 | |||
| Job categoryb | Administrative positions | - | - | 231 | 33.4 | 8 | 42.1 | 223 | 33.2 | ||
| Professional and technical personnel | - | - | 186 | 26.9 | 5 | 26.3 | 181 | 26.9 | |||
| Housewife (husband) | - | - | 58 | 8.4 | 2 | 10.5 | 56 | 8.3 | |||
| Managers | - | - | 47 | 6.8 | 0 | 0.0 | 47 | 7.0 | |||
| Others | - | - | 169 | 24.5 | 4 | 21.1 | 165 | 24.6 | |||
| Annual household income (including tax) | < 1,000,000 JPY (< 9,000 USDc) | - | - | 11 | 1.6 | 1 | 5.3 | 10 | 1.5 | ||
| ≥ 1,000,000 to < 5,000,000 JPY (≥ 9,000 to < 44,000 USDc) | - | - | 136 | 19.7 | 4 | 21.1 | 132 | 19.6 | |||
| ≥ 5,000,000 to < 10,000,000 JPY (≥ 44,000 to < 87,000 USDc) | - | - | 360 | 52.1 | 10 | 52.6 | 350 | 52.1 | |||
| ≥ 10,000,000 JPY (≥ 87,000 USDc) | - | - | 119 | 17.2 | 2 | 10.5 | 117 | 17.4 | |||
| Don't know | - | - | 54 | 7.8 | 2 | 10.5 | 52 | 7.7 | |||
| No reply | - | - | 11 | 1.6 | 0 | 0.0 | 11 | 1.6 | |||
| Aura | With aura | - | - | 230 | 33.3 | - | - | - | - | ||
| Male | - | - | 89 | 38.7 | - | - | - | - | |||
| Female | - | - | 141 | 61.3 | - | - | - | - | |||
| Without aura | - | - | 461 | 66.7 | - | - | - | - | |||
| Male | - | - | 183 | 39.7 | - | - | - | - | |||
| Female | - | - | 278 | 60.3 | - | - | - | - | |||
| Number of days with a headache in the past 3 months | n | - | - | 691 | 100.0 | 19 | 100.0 | 672 | 100.0 | ||
| Mean | - | - | 11.1 | 60.5 | 9.7 | ||||||
| SD | - | - | 12.3 | 14.6 | 8.9 | ||||||
| Min | - | - | 1.0 | 45.0 | 1.0 | ||||||
| Median | - | - | 7.0 | 60.0 | 7.0 | ||||||
| Max | - | - | 90.0 | 90.0 | 60.0 | ||||||
| Number of days with a headache in the past 30 days | n | - | - | 691 | 100.0 | 19 | 100.0 | 672 | 100.0 | ||
| Mean | - | - | 5 | 19 | 4 | ||||||
| SD | - | - | 5.0 | 5.1 | 4.3 | ||||||
| Min | - | - | 0.0 | 15.0 | 0.0 | ||||||
| Median | - | - | 3.0 | 20.0 | 3.0 | ||||||
| Max | - | - | 30.0 | 30.0 | 30.0 | ||||||
| Receipt code for migraine in the past 6 monthsd | Yes | - | - | 61 | 8.8 | - | - | - | - | ||
| Diagnosed with migraine at the medical institution | Yes | - | - | 167 | 24.2 | 6 | 31.6 | 161 | 24.0 | ||
Abbreviations: JPY Japanese yen, USDb, United States dollar, SD Standard deviation, min Minimum, max Maximum
a Migraine included individuals classified as probable migraine
b Details are listed in Additional File 1
c USD was estimated based on the exchange rate of 1 JPY = 0.0087 USD on 09 February 2022
d Data were derived from the medical claims database