15-year survivorship analysis of an interspinous device in surgery for single-level lumbar disc herniation

Table 2 Analysis of survival time of 94 patients with 1-level discectomy and DIAM™ implantation for surgery of lumbar disc herniation

Variables	Survival time (years)	Standard error	95% CI	P-value
Total (n = 94)	14.52	0.28	13.97–15.07
Age (n = 94)				0.460
< 50 years	14.48	0.36	13.77–15.18
≥ 50 years	14.45	0.44	13.58–15.31
Sex (n = 94)				0.601
Man	14.72	0.30	14.13–15.32
Woman	14.17	0.51	13.17–15.12
Location (n = 94)				0.191^≠
L4–5	14.86	0.24	14.40–15.32
L5–6	13.54	0.78	12.02–15.07
L3–4	15.00	0.00

Significant differences are accepted for p-value < 0.05. P-value is calculated by log-rank test
DIAM™ Device for Intervertebral Assisted Motion

ISSN: 1471-2474