Table 3.
Modelled effect sizes from restricted cubic splines (RCS) analyses, depicting adjusted association between BMI and perioperative outcomes. Reference BMI is set as 25kg/m2.
| BMI | Operative time | Blood loss | Pringle maneuver | Blood transfusion | Open conversion | Morbidity | Major morbidity | Length of stay | 90-day mortality |
|---|---|---|---|---|---|---|---|---|---|
| (kg/m2) | MD (95% CI) | MD (95% CI) | RR (95% CI) | RR (95% CI) | RR (95% CI) | RR (95% CI) | RR (95% CI) | MD (95% CI) | RR (95% CI) |
| 15 | −43 (−71 to −15) | −26 (−168 to 116) | 0.94 (0.78 to 1.14) | 1.53 (1.03 to 2.25) | 0.58 (0.25 to 1.31) | 0.88 (0.64 to 1.2) | 1.57 (0.96 to 2.57) | 0.2 (−0.5 to 0.8) | 3.72 (1.7 to 8.12) |
| 16 | −38 (−61 to −14) | −22 (−142 to 99) | 0.96 (0.82 to 1.12) | 1.44 (1.03 to 2.01) | 0.61 (0.3 to 1.23) | 0.89 (0.68 to 1.17) | 1.47 (0.97 to 2.24) | 0.2 (−0.4 to 0.8) | 3.21 (1.61 to 6.41) |
| 17 | −32 (−52 to −13) | −18 (−117 to 82) | 0.97 (0.85 to 1.11) | 1.36 (1.03 to 1.8) | 0.65 (0.36 to 1.15) | 0.9 (0.71 to 1.15) | 1.38 (0.98 to 1.97) | 0.2 (−0.2 to 0.7) | 2.77 (1.52 to 5.06) |
| 18 | −27 (−43 to −12) | −14 (−93 to 66) | 0.99 (0.89 to 1.09) | 1.29 (1.02 to 1.62) | 0.69 (0.44 to 1.08) | 0.91 (0.74 to 1.12) | 1.3 (0.98 to 1.73) | 0.3 (−0.1 to 0.7) | 2.39 (1.44 to 3.99) |
| 19 | −22 (−34 to −10) | −10 (−71 to 52) | 1 (0.92 to 1.08) | 1.22 (1.01 to 1.46) | 0.73 (0.52 to 1.02) | 0.92 (0.78 to 1.09) | 1.22 (0.98 to 1.53) | 0.3 (0 to 0.6) | 2.07 (1.36 to 3.15) |
| 20 | −17 (−26 to −8) | −6 (−53 to 42) | 1.01 (0.95 to 1.08) | 1.15 (0.99 to 1.34) | 0.77 (0.61 to 0.98) | 0.93 (0.82 to 1.07) | 1.15 (0.96 to 1.38) | 0.3 (0.1 to 0.6) | 1.79 (1.28 to 2.49) |
| 21 | −12 (−20 to −5) | −2 (−41 to 37) | 1.02 (0.98 to 1.08) | 1.09 (0.95 to 1.25) | 0.82 (0.69 to 0.97) | 0.95 (0.86 to 1.04) | 1.09 (0.93 to 1.28) | 0.4 (0.2 to 0.5) | 1.54 (1.2 to 1.98) |
| 22 | −8 (−15 to −1) | 0 (−35 to 36) | 1.03 (0.99 to 1.08) | 1.05 (0.93 to 1.18) | 0.86 (0.75 to 1) | 0.96 (0.9 to 1.02) | 1.04 (0.9 to 1.21) | 0.3 (0.2 to 0.5) | 1.35 (1.13 to 1.6) |
| 23 | −5 (−10 to 1) | 1 (−28 to 31) | 1.03 (0.99 to 1.07) | 1.02 (0.92 to 1.12) | 0.91 (0.81 to 1.03) | 0.97 (0.93 to 1.01) | 1.01 (0.9 to 1.14) | 0.3 (0.1 to 0.4) | 1.19 (1.07 to 1.33) |
| 24 | −2 (−5 to 1) | 1 (−16 to 17) | 1.02 (0.99 to 1.04) | 1 (0.95 to 1.06) | 0.95 (0.89 to 1.02) | 0.98 (0.97 to 1) | 1 (0.93 to 1.07) | 0.2 (0.1 to 0.2) | 1.08 (1.02 to 1.14) |
| 25 | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref | Ref |
| 26 | 2 (−1 to 5) | 1 (−14 to 16) | 0.99 (0.97 to 1.01) | 1 (0.95 to 1.05) | 1.05 (0.98 to 1.12) | 1.02 (1 to 1.03) | 1.01 (0.95 to 1.07) | −0.2 (−0.2 to −0.1) | 0.96 (0.89 to 1.02) |
| 27 | 4 (−1 to 9) | 5 (−20 to 30) | 0.98 (0.95 to 1.01) | 0.99 (0.91 to 1.08) | 1.09 (0.98 to 1.22) | 1.04 (1.01 to 1.06) | 1.03 (0.93 to 1.14) | −0.3 (−0.4 to −0.2) | 0.93 (0.8 to 1.09) |
| 28 | 6 (0 to 12) | 11 (−20 to 42) | 0.98 (0.94 to 1.02) | 0.98 (0.88 to 1.09) | 1.14 (1 to 1.32) | 1.06 (1.01 to 1.1) | 1.05 (0.92 to 1.19) | −0.4 (−0.5 to −0.2) | 0.93 (0.72 to 1.19) |
| 29 | 8 (1 to 15) | 19 (−15 to 54) | 0.99 (0.94 to 1.03) | 0.97 (0.86 to 1.09) | 1.2 (1.03 to 1.4) | 1.08 (1.02 to 1.14) | 1.07 (0.93 to 1.24) | −0.5 (−0.6 to −0.3) | 0.93 (0.65 to 1.34) |
| 30 | 10 (3 to 18) | 29 (−9 to 68) | 0.99 (0.95 to 1.04) | 0.95 (0.83 to 1.09) | 1.25 (1.06 to 1.48) | 1.1 (1.02 to 1.19) | 1.1 (0.94 to 1.29) | −0.5 (−0.7 to −0.3) | 0.94 (0.58 to 1.52) |
| 31 | 12 (4 to 21) | 41 (−4 to 85) | 1.01 (0.95 to 1.06) | 0.94 (0.79 to 1.1) | 1.31 (1.1 to 1.56) | 1.12 (1.02 to 1.23) | 1.13 (0.95 to 1.35) | −0.6 (−0.8 to −0.4) | 0.96 (0.52 to 1.74) |
| 32 | 15 (4 to 25) | 53 (0 to 105) | 1.02 (0.96 to 1.08) | 0.92 (0.75 to 1.12) | 1.37 (1.14 to 1.65) | 1.14 (1.02 to 1.28) | 1.17 (0.96 to 1.42) | −0.6 (−0.9 to −0.4) | 0.97 (0.47 to 1.99) |
| 33 | 17 (5 to 29) | 65 (2 to 128) | 1.03 (0.96 to 1.11) | 0.9 (0.71 to 1.14) | 1.43 (1.16 to 1.76) | 1.17 (1.02 to 1.34) | 1.21 (0.96 to 1.52) | −0.7 (−1 to −0.4) | 0.98 (0.42 to 2.28) |
| 34 | 19 (5 to 34) | 77 (3 to 151) | 1.05 (0.97 to 1.14) | 0.88 (0.66 to 1.17) | 1.5 (1.19 to 1.9) | 1.19 (1.02 to 1.39) | 1.24 (0.95 to 1.62) | −0.7 (−1.1 to −0.4) | 1 (0.38 to 2.61) |
| 35 | 22 (5 to 38) | 89 (3 to 176) | 1.06 (0.97 to 1.17) | 0.87 (0.62 to 1.2) | 1.57 (1.2 to 2.05) | 1.21 (1.01 to 1.45) | 1.28 (0.94 to 1.74) | −0.8 (−1.2 to −0.4) | 1.01 (0.34 to 2.99) |
| 36 | 24 (5 to 43) | 102 (2 to 201) | 1.08 (0.97 to 1.2) | 0.85 (0.58 to 1.24) | 1.64 (1.21 to 2.22) | 1.24 (1.01 to 1.51) | 1.32 (0.93 to 1.88) | −0.8 (−1.3 to −0.4) | 1.03 (0.31 to 3.42) |
| 37 | 26 (4 to 48) | 114 (2 to 227) | 1.09 (0.97 to 1.24) | 0.83 (0.54 to 1.28) | 1.72 (1.23 to 2.41) | 1.26 (1.01 to 1.58) | 1.36 (0.92 to 2.02) | −0.9 (−1.4 to −0.3) | 1.04 (0.28 to 3.92) |
| 38 | 28 (4 to 53) | 126 (1 to 252) | 1.11 (0.97 to 1.28) | 0.82 (0.51 to 1.32) | 1.8 (1.23 to 2.61) | 1.29 (1.01 to 1.64) | 1.4 (0.9 to 2.18) | −0.9 (−1.5 to −0.3) | 1.06 (0.25 to 4.49) |
| 39 | 31 (4 to 58) | 139 (−1 to 278) | 1.13 (0.96 to 1.31) | 0.8 (0.47 to 1.36) | 1.88 (1.24 to 2.84) | 1.31 (1.01 to 1.71) | 1.45 (0.89 to 2.36) | −1 (−1.6 to −0.3) | 1.07 (0.22 to 5.14) |
| 40 | 33 (3 to 63) | 151 (−2 to 304) | 1.14 (0.96 to 1.35) | 0.78 (0.44 to 1.4) | 1.97 (1.25 to 3.1) | 1.34 (1.01 to 1.78) | 1.49 (0.87 to 2.55) | −1 (−1.7 to −0.3) | 1.09 (0.2 to 5.89) |