Table 7 Effect estimates from the model of length of stay in the CMP unit (n = 1225)

Type of condition*

   Haemorrhage

1.00

<0.001

   Hypertensive

1.44 (1.29–1.61)

Age (per 10-year increase)

1.06 (0.98–1.14)

0.165

Surgical status*

   Surgical (admission from theatre)

1.00

0.036

   Nonsurgical

1.12 (1.01–1.24)

Past medical history present^a

1.04 (0.65–1.64)

0.883

Highest temperature (per 1°C increase)*

1.13 (1.06–1.20)

<0.001

SBP (per 10 mmHg deviation from normal)*

1.09 (1.05–1.13)

<0.001

Highest heart rate (per 10 beats/min increase)*

1.09 (1.06–1.12)

<0.001

Highest respiratory rate (per 10 breaths/min) increase

0.98 (0.91–1.06)

0.664

PaO₂/FiO₂ ratio (per 100 mmHg decrease)*

1.14 (1.09–1.19)

<0.001

Lowest pH (per 0.1 decrease)*

1.14 (1.06–1.23)

<0.001

Lowest sodium (per 5 mmol/l decrease)*

0.90 (0.84–0.97)

0.006

Potassium (per 1 mmol/l deviation from normal)

1.12 (0.94–1.33)

0.190

Highest creatinine (per 100 μmol/l increase)*

1.32 (1.20–1.45)

<0.001

Highest urea (per 5 mmol/l increase)

1.02 (0.94–1.11)

0.662

Lowest WBC (per 5 × 10⁹/l decrease)*

1.12 (1.06–1.17)

<0.001

Lowest platelet count (per 50 × 10⁹/l decrease)

1.01 (0.97–1.05)

0.563

GCS (per 1 point decrease)

1.01 (0.99–1.03)

0.370