Table 3 Sample characteristics and adjusted odds ratios/coefficients for variables associated with readmissions, in-hospital mortality, and length of stay

All

1273 (11.5)

281 (3.2)

2.4

Attended by relevant subspecialist

 - No (ref)

453 (15.1)

1.00

98 (4.2)

1.00

2.6

1.00

 - Yes

820 (10.2)

0.91 (0.76 to 1.09)

0.308

183 (2.9)

0.71 (0.48 to 1.04)

0.077

2.3

0.18 (−0.07 to 0.42)

0.158

Consultant sex

 - Male (ref)

1009 (11.5)

1.00

211 (3.1)

1.00

2.5

1.00

 - Female

264 (11.6)

1 (0.86 to 1.16)

0.989

70 (3.6)

1.13 (0.85 to 1.5)

0.390

2.2

-0.23* (−0.42 to −0.04)

0.020

Patient sex

 - Male (ref)

657 (11.6)

1.00

136 (3.1)

1.00

2.2

1.00

 - Female

616 (11.5)

1.03 (0.91 to 1.16)

0.633

145 (3.4)

1.17 (0.92 to 1.49)

0.213

2.6

0.11 (−0.02 to 0.29)

0.097

Patient age

 - 0–39 (ref)

69 (9.8)

1.00

1 (0.2)

1.00

1.0

1.00

 - 40–59

191 (11.0)

0.88 (0.65 to 1.18)

0.378

14 (1.0)

3.34 (0.43 to 25.63)

0.247

1.2

0.70* (0.33 to 1.06)

< 0.001

 - 60–79

562 (12.1)

0.75* (0.56 to 0.99)

0.041

100 (2.6)

5.88 (0.81 to 42.82)

0.081

2.5

1.86* (1.52 to 2.2)

< 0.001

 - ≥ 80

451 (11.5)

0.68* (0.51 to 0.91)

0.009

166 (5.5)

11.80* (1.63 to 85.74)

0.015

3.3

2.61* (2.26 to 2.95)

< 0.001

Diagnostic group

 - General (ref)

529 (9.1)

1.00

132 (2.9)

1.00

2.5

1.00

 - Infectious Diseases

2 (5.7)

0.64 (0.15 to 2.71)

0.543

0 (0.0)

*

2.9

1.2 (−0.21 to 2.6)

0.096

 - Cardiology

319 (13.1)

1.43* (1.21 to 1.69)

< 0.001

59 (3.2)

0.87 (0.61 to 1.24)

0.430

1.9

−0.99* (−1.2 to − 0.77)

< 0.001

 - Lung Medicine

206 (17.5)

1.67* (1.33 to 2.11)

< 0.001

42 (4.4)

0.91 (0.56 to 1.47)

0.692

3.0

0.22 (−0.11 to 0.55)

0.139

 - Gastroenterology

120 (13.5)

1.37* (1.08 to 1.74)

0.009

28 (4.2)

1.09 (0.66 to 1.81)

0.727

2.4

0.36* (0.04 to 0.68)

0.029

 - Haematology

49 (29.5)

2.75* (1.86 to 4.07)

< 0.001

12 (9.9)

1.66 (0.79 to 3.45)

0.178

2.8

0.74* (0.05 to 1.43)

0.035

 - Endocrinology

9 (4.5)

0.36* (0.18 to 0.71)

0.004

2 (1.4)

0.31 (0.07 to 1.35)

0.119

3.0

1.14* (0.51 to 1.76)

< 0.001

 - Nephrology

16 (8.6)

0.8 (0.47 to 1.37)

0.418

1 (0.6)

0.13* (0.02 to 0.94)

0.043

3.9

1.48* (0.85 to 2.11)

< 0.001

 - Oncology

14 (28.0)

2.07* (1.07 to 4)

0.030

5 (12.8)

1.66 (0.58 to 4.76)

0.347

5.4

3.10* (1.91 to 4.28)

< 0.001

 - Rheumatology

9 (10.7)

1.05 (0.51 to 2.16)

0.903

0 (0.0)

*

3.4

*

Charlson score

 - 0 (ref)

290 (7.4)

1.00

24 (0.8)

1.00

1.4

1.00

 - 1

335 (9.8)

1.34* (1.13 to 1.6)

0.001

63 (2.4)

2.43* (1.5 to 3.92)

< 0.001

2.6

0.25* (0.06 to 0.44)

0.010

 - 2

314 (16.3)

2.33* (1.94 to 2.81)

< 0.001

76 (5.3)

4.96* (3.08 to 7.99)

< 0.001

3.2

0.93* (0.7 to 1.17)

< 0.001

 - ≥3

334 (18.3)

2.72* (2.26 to 3.27)

< 0.001

118 (7.8)

7.45* (4.72 to 11.77)

< 0.001

3.9

1.23* (0.93 to 1.53)

< 0.001