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. 2019 Jun 14;20:284. doi: 10.1186/s12891-019-2673-2

Table 2.

Comparison of characteristics between the patients with spinal cord edema due to cervical spondylosis (SCECS) group and the three non-SCECS subgroups [those negative for intramedullary signal intensity (ISI) on MRI; those positive for ISI on only T2-weighted MR images (T2WI); and those positive for ISI on both T1- and T2-weighted MR images (T1 & T2WI)]

SCECS (n = 17) Negative ISI (n = 82) ISI on T2WI (n = 96) ISI on T1/T2WI (n = 19) p value
Age (years) *1 *64 (20) *73 (14) 67 (14) 68 (17) *0.032
Male (%) *2 15 (88) 53 (65) 67 (70) 14 (74) 0.239
BMI (kg/m2) *1 25.4 (5.3) 23.6 (4.4) 23.6 (5.2) 26.2 (5) 0.08
Smoking (%) *2 6 (35) 30 (37) 36 (38) 10 (53) 1
Time from onset to operation (months) *1 6 (7) 21 (50) 19 (47) 31 (45) 0.129
Postoperative follow-up period (months) *1 24 (53) 24 (32) 37 (44) 27 (45) 0.098
Preoperative C2–7 cervical lordosis (°) *1 13 (17) 14.5 (13) 13 (13) 5.5 (19) 0.11
Preoperative C2–7 range of motion (°) *1 35 (13) 36.5 (21) 36.5 (18) 42 (21) 0.51
Preoperative segmental range of motion (°) *1 10 (8) 7 (7) 8.5 (6) 7 (6) 0.323
Diameter of the spinal canal (mm) *1 14 (2) *14 (2) *14 (1) 14 (1) *0.036
Preoperative JOA total score *1 10.0 (4.0) 10.8 (3.0) 11.0 (3.0) 11.0 (2.3) 0.938
Postoperative JOA total score *1 13.0 (3.5) 12.0 (3.0) 13.0 (4.0) 12.0 (3.3) 0.754
JOA recovery rate (%) *1 37.5 (28.5) 25.0 (33.0) 33.3 (42.2) 26.8 (41.7) 0.499
Reoperation (%) *2 0 (0) 7 (8.5) 3 (3.2) 0 (0) 1

Data are presented as median (interquartile range) or frequencies (%)

*1 Kruskal–Wallis test and Bonferroni adjustment, *2 Fisher’s exact test

BMI: body mass index; JOA: Japanese Orthopedic Association surgical outcome score