Table 1.
Spinal site | Percentage present | Fraction present | Percentage present | Fraction present | p value, younger versus older |
---|---|---|---|---|---|
Age 2–11.9 months | Age ≥ 12 months | ||||
Cervical | |||||
C2-C3 | 82.4% | 14/17 | 100% | 32/32 | |
C3-C4 | 100% | 17/17 | 100% | 32/32 | |
C4-C5 | 88.2% | 15/17 | 90.6% | 29/32 | |
C5-C6 | 87.5% | 14/16 | 93.6% | 29/31 | |
C6-C7 | 73.3% | 11/15 | 80.8% | 21/26 | |
Overall cervical | 86.6% | 71/82 | 93.5% | 143/153 | 0.078 |
Lumbar | |||||
T12-L1 | 82.4% | 14/17 | 100% | 32/32 | |
L1-L2 | 82.4% | 14/17 | 75.0% | 24/32 | |
L2-L3 | 58.8% | 10/17 | 68.8% | 22/32 | |
L3-L4 | 82.4% | 14/17 | 75.0% | 24/32 | |
L4-L5 | 94.1% | 16/17 | 90.6% | 29/32 | |
L5-L6 | 100% | 17/17 | 100% | 32/32 | |
L6-L7 | 100% | 17/17 | 100% | 31/31 | |
L7-S1 | 100% | 17/17 | 96.8% | 30/31 | |
Overall lumbar | 87.5% | 119/136 | 88.2% | 224/254 | 0.842 |
p value, analyses of overall data, cervical versus lumbar | 0.845 | 0.830 |