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Table 2 Linear correlation analysis (Spearman) between sperm ROS and embryo development indices

From: Double-edged sword: effects of human sperm reactive oxygen species on embryo development in IVF cycles

Factor

Ovulation disorders(n = 90)

Normo-ovulation(n = 303)

mROS

hydrogen peroxide

mROS

hydrogen peroxide

r

P value

r

P value

r

P value

r

P value

Fertilization rate (%)

0.068

0.523

0.016

0.881

−0.073

0.236

− 0.018

0.757

2PN rate (%)

0.164

0.122

0.097

0.364

−0.039

0.530

0.011

0.844

≥3PN rate (%)

−0.136

0.203

−0.211

0.046

0.026

0.672

0.004

0.951

Cleavage rate (%)

0.266

0.011

0.098

0.360

−0.035

0.576

−0.006

0.910

Day 2 Embryo development rate (%)

0.241

0.024

0.261

0.014

−0.045

0.466

−0.031

0.589

Day 3 Embryo development rate (%)

0.002

0.988

0.042

0.698

−0.057

0.361

−0.142

0.022

Day 3 Embryo utilization rate (%)

0.334

0.001

0.273

0.009

− 0.119

0.055

−0.025

0.551

Good-quality day 3 embryo rate (%)

0.182

0.086

−0.021

0.841

−0.117

0.059

0.034

0.349

D5 Blastocyst utilization rate (%)

0.113

0.328

0.071

0.538

−0.080

0.217

−0.057

0.216

D5 Good-quality blastocyst rate (%)

0.129

0.263

−0.087

0.451

−0.184

0.004

−0.075

0.293

D6 Blastocyst utilization rate (%)

0.139

0.228

−0.096

0.405

−0.192

0.003

−0.064

0.652

D6 Good-quality blastocyst rate (%)

−0.016

0.890

0.087

0.453

0.049

0.449

0.027

0.266

Blastocyst development rate (%)

−0.018

0.878

0.019

0.869

0.027

0.677

0.067

0.429

Blastocyst utilization rate (%)

0.173

0.133

0.079

0.495

−0.071

0.272

− 0.048

0.803

Good-quality blastocyst rate (%)

0.156

0.176

−0.035

0.764

−0.075

0.249

−0.015

0.666