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Table 2 Comparison of the outcome variables data between the 2 groups

From: Surgical outcomes of spinal fusion for osteoporotic thoracolumbar vertebral fractures in patients with Parkinson’s disease: what is the impact of Parkinson’s disease on surgical outcome?

 

PD group

Non-PD group

p value

Operation time (min.) median, [IQR]

214.0 [100.0]

237.0 [130.5]

0.4193

Intraoperative blood loss (ml) median, [IQR]

450.0 [627.0]

402.0 [575.5]

0.2761

Perioperative complication [complication/ no complication] (N of patients)

10/16

45/251

0.0063

Local kyphosis angle (°) median, [IQR]

 Preop.

27.0 [21.0]

26.0 [19.0]

0.9965

 Postop.

6.0 [18.0]

8.0 [13.4]

0.8072

 Final

18.7 [18.0]

14.0 [18.0]

0.3357

 Amount of kyphosis correction

10.8 [26.1]

10.0 [16.0]

0.6611

 Mechanical failure (%)

26.9

17.9

0.7464

 JOA score improvement rate (%) median, [IQR]

50.0 [38.5]

53.8 [39.2]

0.1074

Walking ability (N of patients)

 Preop.

Grade1: 2

Grade1: 16

0.1030

Grade 2: 1

Grade 2: 44

Grade 3: 4

Grade 3: 86

Grade 4: 19

Grade 4: 150

 Final

Grade1: 3

Grade1: 114

0.0007

Grade 2: 5

Grade 2: 92

Grade 3: 12

Grade 3: 70

Grade 4: 6

Grade 4: 19

 Subsequent vertebral fracture (%)

38.4

35.1

0.7338

  1. Abbreviation: N number, IQR interquartile range, JOA score, Japanese Orthopaedic Association scoring system