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Table 3 Specific contextual effects of hospital- and regional-level variables in our multilevel logistic regression analysis for Model 3

From: Hospital and regional variations in intensive care unit admission for patients with invasive mechanical ventilation

Variables

Odds ratio (95% CI)

IOR-80%

POOR

Hospital-level

   

Hospitals with ICU beds

239 (172, 332)

(50.2, 1135)

0.0

ICU beds

1.10 (1.08, 1.12)

(0.23, 5.23)

46.8

HCU beds

0.99 (0.98, 1.00)

(0.21, 4.72)

49.8

Acute-care beds

1.00 (1.00, 1.00)

(0.21, 4.75)

50.0

Academic hospital

1.13 (0.70, 1.80)

(0.24, 5.36)

46.1

Tertiary emergency hospital

0.62 (0.45, 0.84)

(0.13, 2.93)

34.5

Ambulance cases

1.00 (1.00, 1.00)

(0.21, 4.75)

50.0

IMV cases

1.00 (1.00, 1.00)

(0.21, 4.75)

50.0

Regional-level

   

Regions with ICU beds

52.7 (29.1, 95.3)

(9.09, 305.48)

0.2

ICU beds per million

1.11 (1.06, 1.17)

(0.19, 6.46)

46.9

HDU beds per million

1.00 (0.98, 1.03)

(0.17, 5.8)

50.0

Acute-care beds per million

1.00 (1.00, 1.00)

(0.17, 5.8)

50.0

  1. Model 3: multilevel logistic regression with patient- and cluster-level variables and random intercepts for clusters
  2. CI confidence interval, IOR interval odds ratio, POOR proportion of opposed odds ratios, ICU intensive care unit, HDU high-dependency care unit, IMV invasive mechanical ventilation