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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 2 The analysis of translation and rotation by ITT analysis using imputation

From: Are additional screws required for press-fit fixation of cementless acetabular cups? A systematic review and meta-analysis

Outcomes and subgroup analysis

Studies (n)

THAs (n)

Effective measures

MD (95% CI)

P-value

Heterogeneity

I2 (%)

Ph

Translation

21

976

MD

− 0.05(− 0.11, 0.01)

0.11

53

0.002

 X: Medial/lateral

6

280

MD

− 0.05 (− 0.11, 0.01)

0.11

0

0.50

 Y: Proximal/distal

6

280

MD

− 0.11 (− 0.22, 0.01)

0.07

62

0.02

 Z: Anterior/posterior

6

280

MD

0.04 (− 0.15, 0.23)

0.70

63

0.02

Total translation/3d

3

136

MD

− 0.01 (− 0.23, 0.20)

0.28

20

0.28

Rotation

12

609

MD

− 0.31 (− 0.83, 0.21)

0.24

88

 < 0.00001

 X: Transverse axis

4

203

MD

− 0.68 (− 1.22, − 0.15)

0.01

57

0.07

 Y: Longitudinal axis

4

203

MD

− 0.10 (− 2.13, 1.93)

0.92

96

 < 0.00001

 Z: Sagittal axis

4

203

MD

− 0.22 (− 0.41, − 0.03)

0.02

0

0.81