Skip to main content

Table 4 Factors of suicide attempts stratified by variables listed in the table by Cox proportional hazard model analysis

From: Insomnia as an independent predictor of suicide attempts: a nationwide population-based retrospective cohort study

Variables With insomnia Without insomnia Ratio Adjusted HR 95%CI P-value
Event PYs Rate (per 103 PYs) Event PYs Rate (per 103 PYs)
Total 1098 953,594 115.143 297 1,913,519 15.521 7.418 3.533 3.059 4.080 < 0.001
Gender
 female 633 468,954 134.981 153 941,910 16.244 8.310 4.186 3.429 5.111 < 0.001
 male 465 484,640 95.948 144 971,609 14.821 6.474 2.861 2.323 3.523 < 0.001
Age group (years)
 15–24 119 42,625 279.179 33 85,435 38.626 7.228 2.778 1.747 4.417 < 0.001
 25–44 546 198,523 275.031 80 400,512 19.974 13.769 5.546 4.236 7.262 < 0.001
 45–64 264 317,825 83.065 105 637,466 16.471 5.043 2.637 2.053 3.389 < 0.001
65 169 394,621 42.826 79 790,106 9.999 4.283 2.900 2.188 3.844 < 0.001
Low income
 no 987 915,626 107.795 288 1,884,404 15.283 7.053 3.487 3.009 4.040 < 0.001
 yes 111 37,968 292.351 9 29,115 30.912 9.458 4.069 2.012 8.228 < 0.001
Catastrophic illness
 no 635 645,939 98.306 220 1,504,259 14.625 6.722 3.769 3.171 4.479 < 0.001
 yes 463 307,655 150.493 77 409,260 18.814 7.999 2.916 2.255 3.770 < 0.001
Urbanization
 high 291 243,831 119.345 84 661,398 12.700 9.397 3.911 2.964 5.161 < 0.001
 medium 398 369,572 107.692 132 835,185 15.805 6.814 3.320 2.655 4.153 < 0.001
 low 409 340,191 120.227 81 416,936 19.427 6.188 3.355 2.592 4.342 < 0.001
Drug dependence
 no 1044 942,877 110.725 292 1,910,198 15.286 7.243 3.569 3.086 4.127 < 0.001
 yes 54 10,717 503.872 5 3321 150.557 3.347 2.079 0.817 5.286 0.207
Alcohol dependence
 no 978 916,596 106.699 288 1,899,319 15.163 7.037 3.513 3.032 4.072 < 0.001
 yes 120 36,998 324.342 9 14,200 63.380 5.117 3.844 1.936 7.634 < 0.001
Mental disorders
 no 300 618,043 48.540 181 1,763,589 10.263 4.730 4.798 3.968 5.801 < 0.001
 yes 798 335,551 237.818 116 149,930 77.369 3.074 2.223 1.823 2.711 < 0.001