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Table 4 Comparisons of sagittal parameters between our results, other Asians and Caucasians

From: Assessment of sagittal spinopelvic alignment in asymptomatic Chinese juveniles and adolescents: a large cohort study and comparative meta-analysis

Variables

Test of difference

Model

Test of heterogeneity

WMD (95% CI)

P value

P value

I2 (%)

Juveniles (our study vs. Caucasians)

 TK (°)

8.18 (4.62, 11.73)

 < 0.001

R

0.115

59.8

 LL (°)

2.86 (− 2.04, 7.76)

0.525

R

0.006

80.2

 PI (°)

8.22 (6.91, 9.54)

 < 0.001

F

0.246

28.7

 PT (°)

1.15 (− 0.24, 2.55)

0.105

F

0.522

0

 SS (°)

7.28 (5.86, 8.70)

 < 0.001

F

0.264

19.8

Adolescents

 Asians

  TK (°)

 − 5.98 (− 9.47, − 2.48)

0.001

R

 < 0.001

85.4

  LL (°)

 − 2.94 (− 5.42, − 0.45)

0.021

R

0.005

73.3

  PI (°)

 − 2.18 (− 4.53, 0.17)

0.069

R

0.017

70.4

  PT (°)

 − 1.19 (− 4.57, 2.19)

0.490

R

 < 0.001

88.9

  SS (°)

 − 1.72 (− 3.51, 0.07)

0.060

R

0.014

68.2

 Caucasians

  TK (°)

7.27 (1.28, 13.27)

0.017

R

 < 0.001

98.3

  LL (°)

 − 0.50 (− 5.21, 4.20)

0.833

R

 < 0.001

96.4

  PI (°)

3.89 (2.88, 4.91)

 < 0.001

R

0.111

37.1

  PT (°)

0.28 (− 0.96, 1.52)

0.656

R

 < 0.001

75.6

  SS (°)

3.86 (2.36, 5.35)

 < 0.001

R

 < 0.001

78.8

 Total populations

 TK (°)

2.83 (− 2.99, 8.66)

0.340

R

 < 0.001

98.7

 LL (°)

 − 1.47 (− 4.74, 1.81)

0.380

R

 < 0.001

95.2

 PI (°)

2.21 (0.40, 4.02)

0.017

R

 < 0.001

86.6

 PT (°)

 − 0.19 (− 1.44, 1.07)

0.770

R

 < 0.001

82.0

 SS (°)

1.47 (− 0.44, 3.39)

0.132

R

 < 0.001

91.9

Pre-adults

     

 Asians

     

  TK (°)

2.79 (1.26, 4.33)

 < 0.001

NR

NR

NR

  LL (°)

NR

NR

NR

NR

NR

  PI (°)

NR

NR

NR

NR

NR

  PT (°)

1.64 (0.60, 2.68)

0.002

NR

NR

NR

  SS (°)

0.82 (− 0.26, 1.90)

0.138

NR

NR

NR

 Caucasians

     

  TK (°)

13.76 (12.97, 14.55)

 < 0.001

F

0.222

33.5

  LL (°)

1.14 (− 5.05, 7.34)

0.718

R

 < 0.001

98.2

  PI (°)

5.49 (3.85, 7.13)

 < 0.001

R

 < 0.001

83.4

  PT (°)

 − 1.09 (− 2.76, 0.58)

0.199

R

 < 0.001

87.4

  SS (°)

6.38 (4.60, 8.15)

 < 0.001

R

 < 0.001

89.1

 Total populations

     

  TK (°)

10.85 (5.67, 16.03)

 < 0.001

R

 < 0.001

98.1

  LL (°)

1.14 (− 5.053, 7.338)

0.718

R

 < 0.001

98.2

  PI (°)

5.49 (3.85, 7.13)

 < 0.001

R

 < 0.001

83.4

  PT (°)

 − 0.40 (− 2.27, 1.47)

0.676

R

 < 0.001

92.5

  SS (°)

5.01 (2.26, 7.76)

 < 0.001

R

 < 0.001

96.6

  1. Bold values indicate a statistical difference
  2. Weight mean difference (WMD) with 95%CI was used to explore the pooled results of sagittal parameters. Sub-group analyses were also performed according to ethnicity rather than the institutions where these study populations received their examinations. Furthermore, volunteers were also divided into two groups according to the age, and meta-analyses were performed in juveniles and adolescents, respectively. The heterogeneity of included studies was examined by a chi-squared-based Q statistical test and quantified by I2 metric value. If I2 value was more than 50% or P < 0.10, WMD were pooled by the random effect model; otherwise, the fixed effect model was used. Sensitivity analysis was performed to assess the impact of each study on the combined effect of the present meta-analysis
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X