Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
2 × 2 contingency table test
| Derotation of LAV > 40% | Derotation of LAV < 40% | Σ | |
|---|---|---|---|
| C7 plumbline deviation <2 cm | 21 | 5 | 26 |
| C7 plumbline deviation > 2cm | 1 | 9 | 10 |
| 22 | 14 | 36 |
Positive predictive value: 21/22 (0.95; 95% CI 0.86–0.99); Negative predictive value: 9/14 (0.64; 95% CI 0.39–0.89); Sensitivity: 21/26 (0.81; 95% CI 0.65–0.96); Specificity: 9/10 (0.90; 95% CI 0.71–1.0); Positive Likelihood-ratio 8.1
LAV lumbar apical vertebrae; CI confidence interval
