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Table 1 Baseline data

From: Traditional growing rod for early-onset scoliosis in high-altitude regions: a retrospective study

Index

H-A groups

L-A groups

Total

P value

No. of patients

23

36

59

0.492

Sex (male/female)(no.)

10/13

14/22

24/35

0.726

Age at initial growing-rod implantation (year)

8.17 ± 2.12 (5–14)

9.36 ± 2.54 (5–14)

8.9 ± 2.4 (5–14)

0.064

Height (cm)

110.39±11.14 (94–140)

122.35±12.29 (95–141)

94–141 (117.68 ± 13.14)

0.00

Weight (kg)

19.39 ± 5.05 (11–34)

26.49±7.93 (13–45)

23.72 ± 7.73 (11–45)

0.00

BMI

15.40 ± 2.15 (11.54–19.45)

17.32 ± 3.10 (13.08–23.92)

16.57 ± 2.91 (11.54–23.92)

0.036

Diagnosis

   

0.291

 Idiopathic

9

21

31

 

 Congenital

10

8

18

 

 Neuromuscular

4

6

10

 

 Syndromic

0

1

1

 

Duration of follow-up (months)

54.72 ± 26.42 (24–111)

45.65 ± 22.71 (24–132)

51.91 ± 25.23 (24–132)

0.18

Surgical procedures per patient (no.)

89/3.87

145/4.03

234/3.97

 

Patients with final fusion (no.)

9

22

31

0.099

Single/dual rods (no.)

6/17

30/6

36/23

0.00

Subcutaneous/submuscular (no.)

12/11

18/18

30/29

0.871

Number of surgical procedures

3.87 ± 1.36 (2–7)

4.03 ± 1.93 (2–10)

3.97 ± 1.72 (2–10)

0.732

The average interval of operations (months)

12.17 ± 2.59 (5–24)

10.94 ± 3.15 (4–24)

11.4 ± 3.0 (4–24)

0.08