Variables

Odds ratio

Relative risk

95% Confidence interval

p-value

Complications

Delivery type

Tear

Episiotomy

Blood transfusion

Instrument used

0.622

0.880

2.083

0.456

0.182

-

0.924

0.981

1.117

0.872

0.591

1.143

1.294 - 0.299

2.261 - 0.343

4.354 - 0.996

0.928 - 0.224

2.366 - 0.148

1.485 - 0.880

0.137

0.502

0.035

0.028

0.686

0.800