Table 2 Factors that may affect POD in the logistic regression analysis model

Age, years (≤70 or >70)

2.887

0.089

BMI,kg/m² (≤25or >25)

0.237

0.626

Sex (Male or Female)

0.653

0.419

Preoperative anxiety (yes or no)

4.266

0.039

PSQI₀ (<16 or ≥16)

3.613

0.057

Preintervention clinical insomnia (yes or no)

0.481

0.488

MCI (yes or no)

6.631

0.010

Surgery type (CABG or no-CABG)

0.000

0.985

EF (<55% or ≥55%)

0.129

0.719

Smoking (yes or no)

0.838

0.360

Hypertention (yes or no)

0.009

0.925

Diabetes (yes or no)

0.182

0.669

Anaemia (yes or no)

0.056

0.812

Surgery duration, min (<300 or ≥300)

1.274

0.259

Anesthaesia duration, min (<300 or ≥300)

1.008

0.315

Sufentanil, µg (<400 or ≥400)

0.386

0.534

Propofol, mg (<1250 or ≥1250)

0.547

0.460

Serious hypotension (yes or no)

2.968

0.085

Preoperative intervention (DEX or saline)

4.413

0.036