Table 5 Univariate and multivariate logistic regression analyses of clinical and procedural factors for culture-negative peritonitis

Age, per 1-year older

0.98

0.96–1.01

0.15

0.98

0.95–1.01

0.215

Sex category

Male sex (ref.)

1

1

Female sex

2.14

0.96–4.80

0.064

1.16

0.40–3.34

0.786

Albumin, per 1 g/dL

0.99

0.97–1.02

0.592

BMI, per 1 kg/m²

0.99

0.91–1.07

0.777

Potassium level

Potassium ≥ 4 mEq/L (ref.)

1

1

Potassium < 4 mEq/L

3.31

0.96–11.42

0.058

4.88

1.14–20.86

0.032

DM (yes/no)

1.25

0.56–2.77

0.586

Culture method

Hemoculture (ref.)

1

1

Agar plate

3.74

1.55–9.01

0.003

5.84

1.94–17.57

0.002