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Table 4 Meta-analysis results of ART outcome measures

From: Time interval between hCG administration and oocyte retrieval and ART outcomes: an updated systematic review and meta-analysis

Outcome measures

No. Of studies

Statistical mode

Heterogeneity (I2,%)

Chi2

degree of freedom

P value

Effect size

95% CI

Z

P value

Oocyte maturation rate

5

Random

91.1

44.80

4

0.000

OR

0.69 (0.45–1.06)

1.67

0.094

Fertilization rate

8

Random

44.4

12.59

7

0.083

OR

0.88 (0.77—1.0)

2.00

0.045

High-quality embryo rate

6

Random

5.47

8.6

5

0.361

OR

1.05 (0.95–1.17)

1

0.316

Clinical pregnancy rate

9

Random

35.4

12.39

8

0.135

OR

0.66 (0.45–0.95)

2.21

0.027

Miscarriage rate

3

Random

0

0.32

2

0.851

OR

1.92 (0.66—5.60)

1.20

0.232

Live birth rate

2

Random

0

0.03

1

0.856

OR

0.50(0.24–1.04)

1.86

0.063