Table 3.
Factors of dementia stratified by variables listed in the table by using Fine & Gray's competing risk model
| Amphetamine‐related disorders | With | Without | Competing risk in the model | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stratified | PYs | Rate (per 105 PYs) | Events | PYs | Rate (per 105 PYs) | Adjusted HR | 95% CI | 95% CI | P | |
| Overall | 1,751 | 198,278.28 | 883.10 | 2,147 | 626,249.70 | 342.83 | 5.034 | 4.701 | 5.391 | <0.001 |
| Gender | ||||||||||
| Male | 1,254 | 138,316.11 | 906.62 | 1,453 | 441,082.28 | 329.42 | 5.379 | 5.023 | 5.760 | <0.001 |
| Female | 497 | 59,962.17 | 828.86 | 694 | 185,167.42 | 374.80 | 4.322 | 4.036 | 4.628 | <0.001 |
| Age group (years) | ||||||||||
| 20–49 | 931 | 126,751.31 | 734.51 | 432 | 241,275.04 | 179.05 | 8.017 | 7.487 | 8.586 | <0.001 |
| 50–64 | 162 | 28,046.02 | 577.62 | 303 | 201,048.23 | 150.71 | 7.490 | 6.995 | 8.021 | <0.001 |
| ≧65 | 658 | 43,480.95 | 1,513.31 | 1,412 | 183,926.43 | 767.70 | 3.852 | 3.597 | 4.126 | <0.001 |
| Education (years) | ||||||||||
| 0–11 | 865 | 75,012.46 | 1,153.14 | 1,011 | 232,121.02 | 435.55 | 5.174 | 4.832 | 5.541 | <0.001 |
| ≧12 | 886 | 79,784.87 | 1,110.49 | 1,136 | 210,202.25 | 540.43 | 4.016 | 3.750 | 4.300 | <0.001 |
| Insured premium (NT$) | ||||||||||
| <18,000 | 1,732 | 195,339.81 | 886.66 | 2,124 | 612,609.23 | 346.71 | 4.998 | 4.667 | 5.352 | <0.001 |
| 18,000–34,999 | 18 | 2,780.93 | 647.27 | 20 | 10,324.80 | 193.71 | 6.530 | 6.098 | 6.993 | <0.001 |
| ≧35,000 | 1 | 157.54 | 634.77 | 3 | 3,315.67 | 90.48 | 13.710 | 12.803 | 14.683 | <0.001 |
| CCI_R group | ||||||||||
| 0 | 1,221 | 132,500.97 | 921.50 | 916 | 342,837.75 | 267.18 | 6.740 | 6.294 | 7.218 | <0.001 |
| 1 | 339 | 34,307.78 | 988.11 | 687 | 128,549.44 | 534.42 | 3.613 | 3.374 | 3.870 | <0.001 |
| 2 | 112 | 12,093.61 | 926.11 | 300 | 52,902.59 | 567.08 | 3.192 | 2.980 | 3.418 | <0.001 |
| 3 | 42 | 7,563.04 | 555.33 | 137 | 39,535.27 | 346.53 | 3.132 | 2.925 | 3.354 | <0.001 |
| ≧4 | 37 | 11,812.89 | 313.22 | 107 | 62,424.66 | 171.41 | 3.571 | 3.335 | 3.824 | <0.001 |
| Urbanization level | ||||||||||
| 1 (The highest) | 438 | 57,312.28 | 764.23 | 581 | 187,974.99 | 309.08 | 4.832 | 4.512 | 5.175 | <0.001 |
| 2 | 730 | 86,591.99 | 843.03 | 926 | 272,868.75 | 339.36 | 4.855 | 4.534 | 5.199 | <0.001 |
| 3 | 152 | 18,694.55 | 813.07 | 152 | 55,027.04 | 276.23 | 5.752 | 5.372 | 6.160 | <0.001 |
| 4 (The lowest) | 431 | 35,679.46 | 1,207.98 | 488 | 110,378.91 | 442.11 | 5.340 | 4.986 | 5.718 | <0.001 |
| Level of care | ||||||||||
| Hospital center | 351 | 52,553.35 | 667.89 | 606 | 204,099.71 | 296.91 | 4.396 | 4.105 | 4.708 | <0.001 |
| Regional hospital | 817 | 98,589.28 | 828.69 | 926 | 283,123.01 | 327.07 | 4.952 | 4.624 | 5.303 | <0.001 |
| Local hospital | 583 | 47,135.65 | 1,236.86 | 615 | 139,026.98 | 442.36 | 5.464 | 5.103 | 5.852 | <0.001 |
PYs, Person‐years; Adjusted HR, Adjusted Hazard ratio: Adjusted for the variables listed in Table 1.; CI, confidence interval; NT$, New Taiwan Dollars.