Table 4 Incidence proportion of acute myocardial infarction in patients undergoing elective spinal fusion during selected risk windows, crude and stratified by selected characteristics
During initial hospitalization | Up to 30 days post-operation | Up to 90 days post-operation | Up to 180 days post-operation | Up to 365 days post-operation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of patients at risk | Number of cases | Incidence proportion (95% confidence interval) | Number of patients at risk | Number of cases | Incidence proportion (95% confidence interval) | Number of patients at risk | Number of cases | Incidence proportion (95% confidence interval) | Number of patients at risk | Number of cases | Incidence proportion (95% confidence interval) | Number of patients at risk | Number of cases | Incidence proportion (95% confidence interval) | |
Crude | 67,020 | 241 | 0.36% (0.31%, 0.41%) | 67,025 | 324 | 0.48% (0.43%, 0.54%) | 67,028 | 417 | 0.62% (0.56%, 0.68%) | 67,033 | 530 | 0.79% (0.72%, 0.86%) | 67,034 | 702 | 1.05% (0.97%, 1.12%) |
Stratifications by: | |||||||||||||||
Age | |||||||||||||||
≥ 18–55 | 26,702 | 27 | 0.10% (0.06%, 0.14%) | 26,702 | 38 | 0.14% (0.10%, 0.19%) | 26,703 | 52 | 0.20% (0.14%, 0.25%) | 26,706 | 73 | 0.27% (0.21%, 0.34%) | 26,707 | 108 | 0.40% (0.33%, 0.48%) |
56–65 | 18,449 | 58 | 0.31% (0.23%, 0.40%) | 18,450 | 80 | 0.43% (0.34%, 0.53%) | 18,451 | 113 | 0.61% (0.50%, 0.73%) | 18,452 | 148 | 0.80% (0.67%, 0.93%) | 18,452 | 201 | 1.09% (0.94%, 1.24%) |
66–75 | 15,924 | 96 | 0.60% (0.48%, 0.72%) | 15,924 | 126 | 0.79% (0.65%, 0.93%) | 15,925 | 154 | 0.97% (0.82%, 1.12%) | 15,925 | 193 | 1.21% (1.04%, 1.38%) | 15,925 | 247 | 1.55% (1.36%, 1.74%) |
76–< 86 | 5,945 | 60 | 1.00% (0.76%, 1.26%) | 5,949 | 80 | 1.35% (1.05%, 1.64%) | 5,949 | 98 | 1.65% (1.32%, 1.97%) | 5,950 | 116 | 1.95% (1.60%, 2.30%) | 5,950 | 146 | 2.45% (2.06%, 2.85%) |
Sex | |||||||||||||||
Male | 38,149 | 171 | 0.45% (0.38%, 0.52%) | 38,151 | 219 | 0.57% (0.50%, 0.65%) | 38,153 | 285 | 0.75% (0.66%, 0.83%) | 38,156 | 359 | 0.94% (0.84%, 1.04%) | 38,157 | 482 | 1.26% (1.15%, 1.38%) |
Female | 28,848 | 70 | 0.24% (0.19%, 0.30%) | 28,851 | 105 | 0.36% (0.30%, 0.43%) | 28,852 | 132 | 0.46% (0.38%, 0.54%) | 28,854 | 171 | 0.59% (0.50%, 0.68%) | 28,854 | 219 | 0.76% (0.66%, 0.86%) |
Unknown | 23 | 0 | 0.00% (0.00%, 0.00%) | 23 | 0 | 0.00% (0.00%, 0.00%) | 23 | 0 | 0.00% (0.00%, 0.00%) | 23 | 0 | 0.00% (0.00%, 0.00%) | 23 | 1 | 4.35% (0.11%, 21.95%) |
Race | |||||||||||||||
White | 59,479 | 212 | 0.36% (0.31%, 0.40%) | 59,482 | 288 | 0.48% (0.43%, 0.54%) | 59,483 | 371 | 0.62% (0.56%, 0.69%) | 59,487 | 478 | 0.80% (0.73%, 0.88%) | 59,488 | 637 | 1.07% (0.99%, 1.15%) |
Black or African American | 4,399 | 18 | 0.41% (0.22%, 0.60%) | 4,399 | 20 | 0.46% (0.26%, 0.65%) | 4,401 | 27 | 0.61% (0.38%, 0.84%) | 4,402 | 33 | 0.75% (0.50%, 1.01%) | 4,402 | 43 | 0.98% (0.69%, 1.27%) |
Asian | 356 | 4 | 1.11% (0.31%, 2.85%) | 356 | 5 | 1.41% (0.46%, 3.25%) | 356 | 5 | 1.40% (0.46%, 3.25%) | 356 | 5 | 1.41% (0.46%, 3.25%) | 356 | 5 | 1.41% (0.46%, 3.25%) |
Other/Unknown | 2,786 | 7 | 0.25% (0.07%, 0.44%) | 2,788 | 11 | 0.50% (0.24%, 0.77%) | 2,788 | 14 | 0.50% (0.27%, 0.77%) | 2,788 | 14 | 0.50% (0.24%, 0.77%) | 2,788 | 17 | 0.61% (0.32%, 0.90%) |
Type 1 Diabetes during baseline | |||||||||||||||
Yes | 480 | 6 | 1.25% (0.26%, 2.24%) | 480 | 7 | 1.46% (0.39%, 2.53%) | 480 | 9 | 1.88% (0.66%, 3.09%) | 480 | 13 | 2.71% (1.26%, 4.16%) | 480 | 18 | 3.75% (2.05%, 5.45%) |
No | 66,540 | 235 | 0.35% (0.31%, 0.40%) | 66,545 | 317 | 0.48% (0.42%, 0.53%) | 66,548 | 408 | 0.61% (0.55%, 0.67%) | 66,553 | 517 | 0.78% (0.71%, 0.84%) | 66,554 | 684 | 1.03% (0.95%, 1.11%) |
Type 2 Diabetes during baseline | |||||||||||||||
Yes | 9,204 | 65 | 0.71% (0.54%, 0.88%) | 9,209 | 96 | 1.04% (0.84%, 1.25%) | 9,210 | 127 | 1.38% (1.14%, 1.62%) | 9,210 | 162 | 1.76% (1.49%, 2.03%) | 9,210 | 213 | 2.31% (2.00%, 2.62%) |
No | 57,816 | 176 | 0.30% (0.26%, 0.35%) | 57,816 | 228 | 0.39% (0.34%, 0.45%) | 57,818 | 290 | 0.50% (0.44%, 0.56%) | 57,823 | 368 | 0.64% (0.57%, 0.70%) | 57,824 | 489 | 0.85% (0.77%, 0.92%) |
Revisional surgery on the same day as index surgery | |||||||||||||||
Yes | 534 | 3 | 0.56% (0.12%, 1.63%) | 534 | 4 | 0.75% (0.21%, 1.91%) | 534 | 4 | 0.75% (0.21%, 1.91%) | 534 | 4 | 0.75% (0.21%, 1.91%) | 534 | 6 | 1.12% (0.23%, 2.02%) |
No | 66,486 | 238 | 0.36% (0.31%, 0.40%) | 66,491 | 320 | 0.48% (0.43%, 0.54%) | 66,494 | 413 | 0.62% (0.56%, 0.68%) | 66,499 | 526 | 0.79% (0.72%, 0.86%) | 66,500 | 696 | 1.05% (0.97%, 1.12%) |
Total length of hospital stay | |||||||||||||||
1–5 days | 59,512 | 108 | 0.18% (0.15%, 0.22%) | 59,516 | 174 | 0.29% (0.25%, 0.34%) | 59,518 | 244 | 0.41% (0.36%, 0.46%) | 59,522 | 341 | 0.57% (0.51%, 0.63%) | 59,523 | 488 | 0.82% (0.75%, 0.89%) |
6–10 days | 5,715 | 67 | 1.17% (0.90%, 1.45%) | 5,716 | 82 | 1.43% (1.13%, 1.74%) | 5,717 | 196 | 1.68% (1.35%, 2.01%) | 5,717 | 110 | 1.92% (1.57%, 2.28%) | 5,717 | 124 | 2.17% (1.79%, 2.55%) |
> 10 days | 1,793 | 66 | 3.68% (2.81%, 4.55%) | 1,793 | 68 | 3.79% (2.91%, 4.68%) | 1,793 | 77 | 4.29% (3.36%, 5.23%) | 1,794 | 79 | 4.40% (3.45%, 5.35%) | 1,794 | 90 | 5.02% (4.00%, 6.03%) |
Use of implanted material during surgery on the same day as index surgery | |||||||||||||||
Yes | 3,799 | 13 | 0.34% (0.16%, 0.53%) | 3,799 | 19 | 0.50% (0.28%, 0.73%) | 3,799 | 22 | 0.58% (0.34%, 0.82%) | 3,799 | 26 | 0.68% (0.42%, 0.95%) | 3,799 | 34 | 0.90% (0.60%, 1.20%) |
No | 63,221 | 228 | 0.36% (0.31%, 0.41%) | 63,226 | 305 | 0.48% (0.43%, 0.54%) | 63,229 | 395 | 0.62% (0.57%, 0.69%) | 63,234 | 504 | 0.80% (0.73%, 0.87%) | 63,235 | 668 | 1.06% (0.98%, 1.14%) |
Medical history of acute myocardial infarction | |||||||||||||||
Yes | 415 | 53 | 12.77% (9.56%, 15.98%) | 416 | 66 | 15.87% (12.35%, 19.38%) | 416 | 81 | 19.47% (15.67%, 23.28%) | 416 | 93 | 22.36% (18.35%, 26.36%) | 416 | 115 | 27.64% (23.25%, 31.94%) |
No | 66,605 | 188 | 0.28% (0.24%, 0.32%) | 66,609 | 258 | 0.39% (0.34%, 0.44%) | 66,612 | 336 | 0.50% (0.45%, 0.56%) | 66,617 | 437 | 0.66% (0.60%, 0.72%) | 66,618 | 587 | 0.88% (0.81%, 0.95%) |