Table 1 The indicator system of factors affecting the risk of terrorist attacks.

From: Risk assessment and categorization of terrorist attacks based on the Global Terrorism Database from 1970 to 2020

Primary indicator

Secondary indicator

I. GTD ID and date

Year (iyear)

Extended incident? (extended)

II. Incident information

Criterion 3 (crit3)

Part of multiple incident (multiple)

III. Incident location

Region (region)

Vicinity (vicinity)

Geocoding Specificity (specificity)

IV. Attack information

Attack type (attacktype1)

Successful attack (success)

Suicide attack (suicide)

V. Weapon information‌

Weapon type (weaptype1)

VI. Target/victim information

Target/victim type (targtype1)

VII. Perpetrator information‌

First perpetrator group suspected/unconfirmed? (guncertain1)

Unaffiliated individual(s) (individual)

VIII. Casualties and consequences‌‌

Total number of fatalities (nkill)

Total number of injured (nwound)

Property damage (property)

Extent of property damage (propextent)

Hostages or kidnaping victims (ishostkid)

IX. Additional information and sources‌

International-Logistical (INT_LOG)

International-Ideological (INT_IDEO)

International-Miscellaneous (INT_MISC)

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