| | Elderly group (≧65 year-old) |
Young group (≤40 year-old)
|
P value
|
|---|
|
Case number
|
n = 24
|
n = 47
| |
|
Age (years)a
|
71.2 ± 4.79 (65–80)
|
33.9 ± 4.45 (23–39)
|
< 0.001*
|
|
Male:Female
|
13:11
|
31:16
| |
|
Follow-up (months)a
|
22.6 ± 22.29
|
30.8 ± 21.52
|
0.145
|
|
Total levels
|
40
|
57
| |
|
one-level
|
8
|
37
| |
|
two-level
|
16
|
10
| |
|
Level distribution
| | |
0.253
|
|
C3–4
|
4
|
2
| |
|
C4–5
|
15
|
16
| |
|
C5–6
|
17
|
35
| |
|
C6–7
|
4
|
4
| |
|
Blood loss (ml)a
|
171.4 ± 164.75
|
115.2 ± 131.41
|
0.178
|
|
Operative time (min)a
|
239.4 ± 81.40
|
178.6 ± 58.00
|
0.008*
|
- aValues are presented as mean ± SD (standard deviation)
- *p < 0.05;
