From: The characteristics of the suicide attempter according to the onset time of the suicidal ideation

Factor | Entire population N = 2274 | Time from development of suicidal ideation to suicide attempt |
P value
| Multiple comparison and residual analysis | Analytical method | Unknown N = 544 | ||
---|---|---|---|---|---|---|---|---|

Same day N = 1358 | Short-term (2–7 days) N = 492 | Long-term (>7 days) N = 424 | ||||||

Male | ||||||||

N | 657 | 308 | 188 | 161 | <.001 | Shaded area | Chi-square | 191 |

% | 28.9 | 22.7 | 38.2 | 38.0 | 35.1 | |||

Age | ||||||||

Mean | 36.73 | 34.68 | 38.36 | 41.43 | <.001 | Significant difference among 3 groups | Analysis of variance | 40.53 |

SD | 16.29 | 15.11 | 16.62 | 18.27 | 17.46 | |||

Presentation to tertiary services | ||||||||

N | 1421 | 802 | 331 | 288 | <.001 | Shaded area | Chi-square | 405 |

% | 62.5 | 59.1 | 67.3 | 67.9 | 74.4 | |||

First-time presentation | ||||||||

N | 1181 | 629 | 279 | 273 | <.001 | Shaded area | 297 | |

% | 51.9 | 46.3 | 56.7 | 64.4 | 54.6 | |||

Psychiatric diagnosis | ||||||||

F0 | ||||||||

N | 47 | 29 | 12 | 6 | .533 | 17 | ||

% | 2.1 | 2.1 | 2.4 | 1.4 | 3.1 | |||

F1 | ||||||||

N | 68 | 49 | 9 | 10 | .097 | 12 | ||

% | 3.0 | 3.6 | 1.8 | 2.4 | 2.2 | |||

F2 | ||||||||

N | 310 | 186 | 70 | 54 | .802 | 71 | ||

% | 13.6 | 13.7 | 14.2 | 12.7 | 13.1 | |||

F3 | ||||||||

N | 837 | 400 | 210 | 227 | <.001 | Shaded area | 235 | |

% | 36.8 | 29.5 | 42.7 | 53.5 | 43.2 | |||

F4 | ||||||||

N | 696 | 470 | 132 | 94 | <.001 | Shaded area | 110 | |

% | 30.6 | 34.6 | 26.8 | 22.2 | 20.2 | |||

F6 | ||||||||

N | 199 | 145 | 39 | 15 | <.001 | Shaded area | 33 | |

% | 8.8 | 10.7 | 7.9 | 3.5 | 6.1 | |||

Other | ||||||||

N | 117 | 79 | 20 | 18 | .208 | 67 | ||

% | 5.1 | 5.8 | 4.1 | 4.2 | 12.3 | |||

Prior history of suicide attempt | ||||||||

During the past year | ||||||||

N | 919 | 611 | 152 | 156 | <.001 | Shaded area | 163 | |

% | 40.4 | 45.0 | 30.9 | 36.8 | 30.0 | |||

During lifetime | ||||||||

N | 1297 | 848 | 239 | 210 | <.001 | Shaded area | 245 | |

% | 57.0 | 62.4 | 48.6 | 49.5 | 45.0 | |||

No consultation prior to suicide attempt | ||||||||

N | 1453 | 942 | 297 | 214 | <.001 | Shaded area | ||

% | 63.9 | 69.4 | 60.4 | 50.5 | ||||

Currently receiving outpatient psychiatric treatment | ||||||||

N | 1411 | 907 | 273 | 231 | <.001 | Shaded area | ||

% | 62.0 | 66.8 | 55.5 | 54.5 | ||||

Means of suicide attempt | ||||||||

Drug | ||||||||

N | 1221 | 796 | 260 | 165 | <.001 | Shaded area | 276 | |

% | 53.7 | 58.6 | 52.8 | 38.9 | 50.7 | |||

Poisoning | ||||||||

N | 137 | 65 | 34 | 38 | .004 | Shaded area | 32 | |

% | 6.0 | 4.8 | 6.9 | 9.0 | 5.9 | |||

Inhaling gas | ||||||||

N | 77 | 27 | 26 | 24 | <.001 | Shaded area | 34 | |

% | 3.4 | 2.0 | 5.3 | 5.7 | 6.2 | |||

Jumping from a tall building | ||||||||

N | 90 | 49 | 16 | 25 | .072 | 32 | ||

% | 4.0 | 3.6 | 3.3 | 5.9 | 5.9 | |||

Jumping in front of a train | ||||||||

N | 9 | 6 | 1 | 2 | .742 | 1 | ||

% | .4 | .4 | .2 | .5 | .2 | |||

Knife | ||||||||

N | 399 | 233 | 82 | 84 | .385 | 61 | ||

% | 17.5 | 17.2 | 16.7 | 19.8 | 11.2 | |||

Self-burning | ||||||||

N | 22 | 10 | 7 | 5 | .364 | 19 | ||

% | 1.0 | .7 | 1.4 | 1.2 | 3.5 | |||

Drowning oneself | ||||||||

N | 29 | 16 | 4 | 9 | .187 | 5 | ||

% | 1.3 | 1.2 | .8 | 2.1 | .9 | |||

Hanging | ||||||||

N | 104 | 49 | 19 | 36 | <.001 | Shaded area | 46 | |

% | 4.6 | 3.6 | 3.9 | 8.5 | 8.5 | |||

Combination | ||||||||

N | 154 | 88 | 38 | 28 | .635 | 28 | ||

% | 6.8 | 6.5 | 7.7 | 6.6 | 5.1 | |||

Other | ||||||||

N | 18 | 10 | 4 | 4 | .914 | 2 | ||

% | .8 | .7 | .8 | .9 | .4 | |||

Motives for suicide | ||||||||

Family problem | ||||||||

N | 502 | 336 | 102 | 64 | <.001 | Shaded area | 108 | |

% | 22.1 | 24.7 | 20.7 | 15.1 | 19.9 | |||

Economic difficulties | ||||||||

N | 119 | 47 | 40 | 32 | <.001 | Shaded area | 24 | |

% | 5.2 | 3.5 | 8.1 | 7.5 | 4.4 | |||

Pain of sickness | ||||||||

N | 243 | 112 | 60 | 71 | <.001 | Shaded area | 69 | |

% | 10.7 | 8.2 | 12.2 | 16.7 | 12.7 | |||

Hallucinations/Delusion | ||||||||

N | 157 | 82 | 37 | 38 | .097 | 17 | ||

% | 6.9 | 6.0 | 7.5 | 9.0 | 3.1 | |||

Work problem | ||||||||

N | 194 | 98 | 54 | 42 | .020 | Shaded area | 34 | |

% | 8.5 | 7.2 | 11.0 | 9.9 | 6.2 | |||

Inter-personal relationship | ||||||||

N | 391 | 257 | 87 | 47 | .001 | Shaded area | 60 | |

% | 17.2 | 18.9 | 17.7 | 11.1 | 11.0 | |||

School problem | ||||||||

N | 24 | 15 | 3 | 6 | .474 | 2 | ||

% | 1.1 | 1.1 | .6 | 1.4 | .4 | |||

Other | ||||||||

N | 84 | 64 | 13 | 7 | .005 | Shaded area | 12 | |

% | 3.7 | 4.7 | 2.6 | 1.7 | 2.2 | |||

Combination | ||||||||

N | 431 | 247 | 86 | 98 | .050 | 97 | ||

% | 19.0 | 18.2 | 17.5 | 23.1 | 17.8 | |||

Unknown | ||||||||

N | 129 | 100 | 10 | 19 | <.001 | Shaded area | 121 | |

% | 5.7 | 7.4 | 2.0 | 4.5 | 12.2 | |||

Living with someone | ||||||||

N | 1826 | 1073 | 400 | 353 | .154 | 420 | ||

% | 80.3 | 79.0 | 81.3 | 83.3 | 77.2 | |||

Years of schooling | ||||||||

Mean | 11.70 | 11.69 | 11.78 | 11.64 | .663 | Analysis of variance | 11.63 | |

SD | 2.35 | 2.19 | 2.39 | 2.75 | 2.25 | |||

Being at work | ||||||||

N | 786 | 458 | 177 | 151 | .110 | 163 | ||

% | 34.6 | 33.7 | 36.0 | 35.6 | 30.0 | |||

JCS | ||||||||

Mean | 211.41 | 196.85 | 228.89 | 236.80 | .104 | Kruskal–Wallis | 103.85 | |

SD | 373.87 | 362.48 | 386.16 | 392.83 | 128.43 | |||

AD (Asukai classification) | ||||||||

N | 313 | 129 | 79 | 105 | <.001 | Shaded area | Chi-square | 120 |

% | 13.8 | 9.5 | 16.1 | 24.8 | 22.1 | |||

BPRS | ||||||||

Mean | 18.60 | 17.84 | 19.10 | 20.52 | <.001 | Significant difference between the same-day group and the other groups | Analysis of variance | 12.36 |

SD | 11.59 | 11.44 | 10.96 | 12.56 | 9.80 | |||

GAS | ||||||||

Mean | 34.74 | 37.16 | 32.99 | 29.08 | <.001 | Significant difference among 3 groups | 24.81 | |

SD | 19.26 | 19.80 | 17.77 | 17.78 | 18.55 | |||

LCU | ||||||||

Mean | 41.70 | 31.852 | 29.225 | 39.378 | <.001 | Significant difference among 3 groups | Kruskal–Wallis | 52.84 |

SD | 33.40 | .981 | 1.476 | 2.056 | 37.24 | |||

Outcome | ||||||||

Discharged home | ||||||||

N | 670 | 471 | 101 | 98 | <.001 | Shaded area | 114 | |

% | 30.2 | 35.3 | 21.0 | 24.3 | 22.2 | |||

Admitted to emergency care center | ||||||||

N | 592 | 322 | 147 | 123 | .004 | Shaded area | Chi-square | 153 |

% | 26.7 | 24.1 | 30.6 | 30.4 | 29.8 | |||

Admitted to psychiatric department | ||||||||

N | 937 | 532 | 225 | 180 | .016 | Shaded area | 230 | |

% | 42.2 | 39.9 | 46.9 | 44.6 | 44.8 | |||

Suicide | ||||||||

N | 36 | 16 | 6 | 14 | .007 | Shaded area | 52 | |

% | 1.6 | 1.2 | 1.2 | 3.3 | 9.6 |