Table 6 A comparison of the primary and secondary outcomes between the OPLL and non-OPLL groups with CSCI without bone injury.
Before PSM | After PSM | |||||
|---|---|---|---|---|---|---|
OPLL (N = 211) | Non-OPLL (N = 403) | p-value | OPLL (N = 176) | Non-OPLL (N = 176) | p-value | |
Baseline | ||||||
AIS (%) | ||||||
A | 18 (8.6) | 16 (4.0) | 0.032 | 16 (9.1) | 4 (2.3) | 0.045 |
B | 15 (7.1) | 16 (4.0) | 11 (6.3) | 11 (6.3) | ||
C | 71 (33.8) | 144 (35.8) | 60 (34.3) | 69 (39.4) | ||
D | 106 (50.5) | 226 (56.2) | 88 (50.3) | 91 (52.0) | ||
AMS | 58.2 ± 32.8 | 65.2 ± 29.2 | 0.009 | 58.6 ± 32.3 | 61.7 ± 29.1 | 0.36 |
Complication (%) | 58 (28.0) | 92 (22.9) | 0.17 | 49 (28.0) | 37 (21.0) | 0.14 |
Death (%) | 5 (2.4) | 8 (2.0) | 0.77 | 3 (1.7) | 3 (1.7) | 1 |
6 months | ||||||
AIS improvement (%) | ||||||
Worsening | 1 (0.7) | 2 (0.7) | 0.19 | 1 (0.9) | 1 (0.7) | 0.12 |
No improvement | 87 (62.1) | 169 (56.9) | 72 (61.5) | 69 (49.6) | ||
Improvement | 43 (30.7) | 116 (39.1) | 37 (31.6) | 63 (45.3) | ||
At least a 2-grade improvement | 9 (6.4) | 10 (3.4) | 7 (6.0) | 6 (4.3) | ||
AMS improvement | 16.5 ± 19.9 | 16.1 ± 18.1 | 0.85 | 17.3 ± 20.6 | 17.8 ± 19.2 | 0.83 |
Comorbidity (%) | 12 (8.0) | 23 (7.7) | 1 | 8 (6.4) | 5 (3.4) | 0.27 |
Mortality (%) | 0 | 0 | NA | 0 | 0 | NA |
12 months | ||||||
AIS improvement (%) | ||||||
Worsening | 0 | 0 | 0.45 | 0 | 0 | 0.26 |
No improvement | 58 (58.6) | 113 (53.6) | 53 (60.2) | 48 (48.5) | ||
Improvement | 34 (34.3) | 87 (41.2) | 29 (33.0) | 44 (44.4) | ||
At least a 2-grade improvement | 7 (7.1) | 11 (5.2) | 6 (6.8) | 7 (7.1) | ||
AMS improvement | 18.5 ± 24.1 | 18.1 ± 19.5 | 0.88 | 19.2 ± 24.7 | 19.6 ± 20.7 | 0.90 |
Comorbidity (%) | 10 (8.9) | 6 (2.8) | 0.027 | 8 (8.2) | 1 (1.0) | 0.016 |
Mortality (%) | 1 (0.9) | 1 (0.5) | 1 | 1 (1.0) | 0 (0.0) | 0.49 |
