Table 5.
Composite events by patient characteristics
| Characteristics | N | n (%) | OR | 95% LCL | 95% UCL | p |
|---|---|---|---|---|---|---|
| Pre and Intra-operative | ||||||
| Procedure | ||||||
| Primary | 3577 | 190(5.3) | 1 | |||
| Revision/Reversal | 225 | 34(15.1) | 2.374 | 1.555 | 3.625 | <0.001 |
| Prior foregut surgery | ||||||
| No | 3718 | 220(5.9) | 1 | |||
| Yes | 84 | 4(4.8) | 0.481 | 0.17 | 1.358 | 0.17 |
| Mins. incision - skin close** | <.001 | |||||
| 107 or less | 910 | 32(3.5) | 1 | |||
| 108 – 136 | 970 | 41(4.2) | 1.338 | 0.821 | 2.18 | 0.24 |
| 137 – 171 | 958 | 63(6.6) | 2.268 | 1.398 | 3.678 | 0.001 |
| 172 or more | 957 | 88(9.2) | 3.078 | 1.893 | 5.006 | <.001 |
| Incision - skin close (per hour) | 1.594 | 1.388 | 1.83 | <.001 | ||
| Crystalloid fluids ml** | 0.005 | |||||
| Less than 2000 | 714 | 30(4.2) | 1 | |||
| 2001 – 2799 | 1205 | 61(5.1) | 1.103 | 0.695 | 1.75 | 0.68 |
| 2800 – 3499 | 848 | 48(5.7) | 1.354 | 0.819 | 2.239 | 0.24 |
| 3500 or more | 1035 | 85(8.2) | 2.075 | 1.264 | 3.407 | 0.004 |
| Crystalloid fluids ml (per 500ml) | 1.106 | 1.042 | 1.173 | 0.001 | ||
| Colloid fluids ml | ||||||
| Less than 500 | 3498 | 197(5.6) | 1 | |||
| 500 or more | 258 | 24(9.3) | 1.632 | 1.002 | 2.659 | 0.049 |
| Blood loss ml | ||||||
| Less than 75 | 2748 | 120(4.4) | 1 | |||
| 75 or more | 1015 | 102(10) | 2.347 | 1.741 | 3.164 | <.001 |
| Demographics | ||||||
| Age (years) | 0.71 | |||||
| <30 | 390 | 16(4.1) | 1 | |||
| 30–39 | 990 | 53(5.4) | 1.265 | 0.709 | 2.256 | 0.43 |
| 40–49 | 1108 | 66(6) | 1.31 | 0.743 | 2.312 | 0.35 |
| 50–59 | 991 | 65(6.6) | 1.462 | 0.826 | 2.591 | 0.19 |
| 60–64 | 238 | 17(7.1) | 1.499 | 0.729 | 3.079 | 0.27 |
| 65+ | 85 | 7(8.2) | 1.98 | 0.774 | 5.062 | 0.16 |
| Age per year | 1.012 | 0.999 | 1.025 | 0.07 | ||
| BMI (kg/m2) categories | 0.01 | |||||
| <40 | 480 | 40(8.3) | 1.767 | 1.186 | 2.631 | 0.005 |
| 40– <50 | 1919 | 85(4.4) | 1 | |||
| 50 – <60 | 1019 | 63(6.2) | 1.291 | 0.916 | 1.819 | 0.14 |
| 60+ | 383 | 36(9.4) | 1.784 | 1.168 | 2.724 | 0.007 |
| BMI per 1 kg/m2 | 1.007 | 0.993 | 1.022 | 0.32 | ||
| Co-morbidities | ||||||
| Hypertension | ||||||
| No | 1698 | 97(5.7) | 1 | |||
| Yes | 2104 | 127(6) | 1.03 | 0.78 | 1.36 | 0.84 |
| Diabetes | ||||||
| No | 2479 | 132(5.3) | 1 | |||
| Yes | 1323 | 92(7) | 1.212 | 0.912 | 1.61 | 0.19 |
| Congestive heart failure | ||||||
| No | 3724 | 214(5.7) | 1 | |||
| Yes | 76 | 10(13.2) | 2.193 | 1.083 | 4.44 | 0.029 |
| Asthma | ||||||
| No | 2890 | 166(5.7) | 1 | |||
| Yes | 911 | 58(6.4) | 1.036 | 0.755 | 1.423 | 0.82 |
| Functional status | ||||||
| Can walk 200 ft | 3734 | 210(5.6) | 1 | |||
| Can not walk 200 feet | 67 | 14(20.9) | 2.555 | 1.323 | 4.934 | 0.005 |
| DVT | ||||||
| No | 3652 | 200(5.5) | 1 | |||
| Yes | 149 | 24(16.1) | 3.212 | 1.996 | 5.168 | <.001 |
| Sleep apnea | ||||||
| No | 1941 | 97(5) | 1 | |||
| Yes | 1860 | 127(6.8) | 1.381 | 1.029 | 1.855 | 0.032 |
| Ischemic heart disease | ||||||
| No | 3647 | 211(5.8) | 1 | |||
| Yes | 153 | 13(8.5) | 1.465 | 0.804 | 2.67 | 0.21 |
| Pulmonary hypertension | ||||||
| No | 3757 | 218(5.8) | 1 | |||
| Yes | 45 | 6(13.3) | 1.765 | 0.705 | 4.418 | 0.22 |
| Venous edema with ulcerations | ||||||
| No | 3639 | 206(5.7) | 1 | |||
| Yes | 163 | 18(11) | 1.577 | 0.923 | 2.692 | 0.10 |
| Number of co-morbidities | 0.037 | |||||
| None | 649 | 25(3.9) | 1 | |||
| 1–2 | 2111 | 120(5.7) | 1.45 | 0.926 | 2.269 | 0.10 |
| 3+ | 1038 | 79(7.6) | 1.853 | 1.145 | 3 | 0.012 |
| Surgical procedure | .005 | |||||
| LRYGB | 3024 | 150(5) | 1 | |||
| ORYGB | 534 | 48(9) | 1.67 | 1.064 | 2.619 | 0.026 |
| Other | 244 | 26(10.7) | 2.073 | 1.197 | 3.589 | 0.009 |
**
Categorization is based on quartiles