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Table 2 Change of Z-score in different pre-operative weight groups

From: Growing-rod implantation improves nutrition status of early-onset scoliosis patients: a case series study of minimum 3-year follow-up

Group

N

M pre-op Z

M final F/U Z

p

Z − 2

12

− 2.65

− 1.79

0.0022**

− 2 < Z − 1

20

− 1.55

− 0.61

0.0003**

− 1 < Z 0

10

− 0.55

− 0.31

0.2965

Z > 0

10

0.95

0.03

0.0036**

All

52

− 0.94

− 0.65

0.0322*

  1. Patient weights were grouped by pre-operative Z-scores
  2. N case number, M mean, F/U follow-up
  3. p < 0.05 is indicated by *; p < 0.01 is indicated by **