Table 6.
Subgroup analysis for patients with scoliosis
| Landmark- guided group n = 6 |
Ultrasound- assisted group n = 6 |
P value | 95% CI of differences (%) | |
|---|---|---|---|---|
| First pass success, n (%) | 0 (0.0%) | 5 (83.3%) | 0.015a | (71.7, 94.9) |
| Number of attempts | 2 [1 to 5] | 1 [1 to 1] | 0.022 | |
| Number of passes | 3.5 [2.75 to 12.5] | 1 [1 to 1.75] | 0.016 | |
| Locating time(s) | 40.0 [33.75 to 45.75] | 405.0 [256.75 to 466.25] | 0.004 | |
| Puncture Time(s) | 535.33 ± 185.24 | 272.50 ± 206.80 | 0.043 | |
| Total time(s) | 576.33 ± 180.21 | 641.17 ± 298.78 | 0.659 | |
| Satisfaction; 4–5 | 2 (33.3%) | 6 (100.0%) | 0.061a | (52.1, 81.3) |
Data are presented as mean ± SD, median [interquartile range] or n (%)
Abbreviations: SD standard deviation, CI confidence interval
aFisher’s exact test