Table 3 Linear regression models for 3 distances with age under 3 different surgical positions
Distances, cm | Positions | ||
|---|---|---|---|
Head-back position | Middle head position | Maximal flexion of the head | |
CT, cm | CT = 3.236 + 0.298 × age | CT = 2.443 + 0.256 × age | CT = 1.650 + 0.236 × age |
CV, cm | CV = 8.362 + 0.403 × age | CV = 7.647 + 0.377 × age | CV = 6.902 + 0.364 × age |
TV, cm | TV = 5.125 + 0.105 × age | TV = 5.291 + 0.111 × age | TV = 5.252 + 0.129 × age |
Position changes | |||
Middle head position to be Head-back position | Middle head position to be Maximal flexion of the head | ||
CT, cm | CT = 2.290 + 0.277 × age* + 1.099 × Position change* | CT = 2.520 + 0.246 × age*-0.947 × Position change * | |
CV, cm | CV = 7.550 + 0.390 × age* + 0.909 × Position change * | CV = 7.693 + 0.370 × age*-0.838 × Position change * | |
TV, cm | TV = 5.312 + 0.108 × age*-0.208 × Position change | TV = 5.226 + 0.120 × age* + 0.90 × Position change | |