Table 2 Univariate multilevel analyses for the association between missing discharge letters and patient and admission characteristics adjusted for clustering at the hospital level and hospital department level

 University

1.16 (0.57–2.35)

 Tertiary teaching

1.21 (0.67–2.17)

 General

RC

 Cardiology

RC

 Surgery

0.96 (0.59–1.58)

 Internal medicine

1.00 (0.64–1.58)

 Ear, nose, throat

1.67 (0.82–3.40)

 Lung diseases

0.78 (0.45–1.35)

 Neurology

0.31 (0.15–0.62)**

 Orthopaedics

1.18 (0.66–2.10)

 Urology

0.72 (0.34–1.54)

 Other

0.52 (0.31–0.85)**

 1–18 years

1.02 (0.55–1.88)

 19–40 years

1.32 (0.85–2.03)

 41–65 years

1.05 (0.79–1.39)

 66–79 years

1.19 (0.91–1.55)

 >80 years

RC

Urgently admitted patients

0.70 (0.56–0.87)**

Patients deceased during admission

0.81 (0.66–1.00)

Admission is a readmission

1.30 (1.05–1.60)*

Admission is followed by an unplanned readmission

0.89 (0.61–1.30)

Admission to a non-surgical unit

0.81 (0.60–1.09)

Length of hospital stay

0.99 (0.98–1.00)*

 Score > =3

1.35 (0.94–1.94)

One or more positive screening criteria

0.67 (0.54–0.83)**

Adverse event

0.70 (0.48–1.02)

Potential preventable adverse event

0.73 (0.37–1.44)