Operative time (m/60)

0.632

<0.0001

Volume of crystalloid solutions (total, mL/100)

0.402

<0.0001

Colloid dosage (total, mL/100)

0.429

<0.0001

Albumin (administered = 1, not administered = 0)

0.497

<0.0001

Total amount of fluid (mL/100)

0.494

<0.0001

Amount of blood loss (Log 10)

0.480

<0.0001

In-out balance (mL/1000)

0.387

<0.0001

Ephedrine dosage (mg)

0.180

0.0120

Number of ephedrine doses administered (times)

0.203

0.0045

Preoperative creatinine level (Log 10)

0.172

0.0168

Surgical procedure types

0.727

<0.0001