|  | N | % |
---|---|---|---|
Gender | Male | 1,137 | 54.6 |
 | Female | 927 | 44.5 |
Age (years) | ≤29 | 59 | 2.8 |
 | 30–39 | 184 | 8.8 |
 | 40–49 | 333 | 16.0 |
 | 50–64 | 802 | 38.5 |
 | 65–79 | 623 | 29.9 |
 | ≥80 | 66 | 3.2 |
Place of residence when the earthquake occurred | |||
 | Nagaoka City | 727 | 34.9 |
 | Ojiya City | 442 | 21.2 |
 | Mitsuke City | 171 | 8.2 |
 | Tohkamachi City | 248 | 11.9 |
 | Kawaguchi Town | 146 | 7.0 |
 | Koshiji Town | 108 | 5.2 |
 | Yamakoshi Village | 216 | 10.4 |
Employment | Farmer | 236 | 11.3 |
 | Executive of business firm | 128 | 6.1 |
 | Office worker | 461 | 22.1 |
 | Government official | 54 | 2.6 |
 | Part-time worker | 167 | 8.0 |
 | Housewife | 303 | 14.5 |
 | Student | 5 | 0.2 |
 | None | 201 | 9.6 |
 | Pensioner | 295 | 14.2 |
Location when the earthquake occurred | |||
 | At home | 1,426 | 68.5 |
 | At home of friends | 30 | 1.4 |
 | At office | 132 | 6.3 |
 | In Car | 169 | 8.1 |
 | In bus or train | 8 | 0.4 |
 | In public facilities | 29 | 1.4 |
 | In other buildings | 71 | 3.4 |
 | Outdoors | 78 | 3.7 |
Person by their side when the earthquake occurred | |||
 | With someone | 317 | 15.2 |
 | Alone | 1,766 | 84.8 |
Family members living together | |||
 | None | 847 | 40.7 |
Income | Â | Â | Â |
 | Lost income after earthquake | 21 | 1.0 |
Severity of house damage | Completely destroyed | 356 | 17.1 |
 | Almost completely destroyed | 292 | 14.0 |
 | Severely damaged | 621 | 29.8 |
 | Slightly damaged | 787 | 37.8 |
 | None | 14 | 0.7 |
Timing of contact with lifeguards after the earthquake | |||
 | ≤1 hour | 139 | 6.7 |
 | 1< ≤ 3 hours | 263 | 12.6 |
 | 3< ≤ 6 hours | 187 | 9.0 |
 | 6< ≤ 12 hours | 204 | 9.8 |
 | > 12 hours | 998 | 47.9 |
 | No contact | 279 | 13.4 |
Injury caused by the earthquake | No injury | 1,888 | 90.6 |
 | Mild injury | 191 | 9.2 |
 | Injury requiring hospitalization | 4 | 0.2 |
Sickness after the earthquake | No sickness | 1,870 | 89.8 |
 | Mild sickness | 195 | 9.4 |
 | Sickness requiring hospitalization | 18 | 0.9 |