TABLE 3.
ASD Total and Generational PCS and MCS Values for ASD Patients With no Other Comorbidities Compared with United States Total and Generational Norms19
| Generational Age Groups (n = total ASD patients) | ASD PCS; NBS value (SD) | US General Population PCS; NBS value | PCS Difference (percentile US general population; P) | ASD MCS: NBS value (SD) | US General Population MCS; NBS value | MCS Difference From Population Mean Value (P) |
| 18–24 years (n = 30) | 52.7 (7.3) | 53.5 | −0.8 (total population; 0.53) | 48.8 (10.7) | 46.1 | +2.7 (0.17) |
| 25–34 years (n = 58) | 46.8 (9.6) | 53.6 | −6.5 (<25th; <0.05) | 51.2 (8.9) | 49.1 | +2.1 (0.03) |
| 35–44 years (n = 34) | 43.2 (10.3) | 52.3 | −9.1 (<25th; <0.05) | 50.2 (9.6) | 49.1 | +1.1 (0.49) |
| 45–54 years (n = 47) | 43.2 (10.8) | 49.7 | −6.5 (<25th; <0.05) | 49.9 (11.3) | 50.6 | −0.7 (0.68) |
| 55–64 years (n = 57) | 42.4 (9.7) | 47.4 | −5.0 (<25th; <0.05) | 48.9 (11.4) | 51.6 | −2.7 (0.07) |
| 65–74 years (n = 14) | 35.8 (11.1) | 44.7 | −8.9 (<25th; <0.05) | 51.9 (12.2) | 52.8 | −0.9 (0.81) |
| ≥75 years (n = 6) | 36.8 (10.8) | 39.9 | −3.1 (total population; 0.52) | 51.4 (9.3) | 50.2 | +1.2 (0.77) |
| Total population (n = 246) | 44.4 (10.5) | 50 | −5.6 (<25th; <0.05) | 50.2 (10.5) | 50 | +0.2 (0.78) |
ASD values reported as norm-based values and compared with United States generational population normative values and percentile norm-based values within each generation. PCS, physical component summary; ASD indicates adult spinal deformity; MCS, mental component summary; SF-36, Medical Outcomes Survey Short Form-36 (Standard Form Version 2); P values based on 2-tailed t test of mean ASD PCS and MCS equal to respective U.S. population norm; P < 0.05, statistically significant.