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Table 2 Comparisons of intraoperative blood loss, operative time, and days of hospitalization, and clinical parameters

From: Comparison among perfect-C®, zero-P®, and plates with a cage in single-level cervical degenerative disc disease

  Perfect-C
(n = 41)
Zero-P
(n = 36)
Plate-Cage
(n = 71)
P-value
Intraoperative blood loss (ml) 69.51 ± 22.91 74.44 ± 17.15 93.66 ± 45.65 0.001*
Operation time (min) 107.81 ± 17.96 113.33 ± 19.12 127.96 ± 30.37 < 0.001*
Duration of hospitalization (day) 6.35 ± 1.14 6.47 ± 2.55 8.93 ± 5.17 < 0.001*
NDI scores
 Preoperation 38.19 ± 3.84 38.47 ± 1.76 38.84 ± 2.13 0.443
 last follow-up 14.34 ± 2.02# 14.45 ± 2.39# 14.86 ± 2.23# 0.381
VAS
 Preoperation 8.09 ± 0.74 8.36 ± 0.75 8.47 ± 0.7 0.078
 last follow-up 2.68 ± 0.96# 2.89 ± 0.95# 3.16 ± 0.97# 0.034*
Dysphasia
 Postoperative 1 month 1 (2%) 1 (3%) 8 (11%) 0.262
 last follow-up 0 0 1 (1%) 0.108
  1. NDI neck disability index, VAS visual analog scale
  2. *P < 0.05, comparison among the Perfect-C, Zero-P, and Plate-Cage groups
  3. #P < 0.05, comparison with the preoperative value