Table 5 Clinical decision rules Odds ratios (categorical variable PCT)

Department

Low

1.0

[Reference value]

Intermediate

0.095

[0.00241, 3.39]

High

0.230

[0.0128, 6.2]

PCT Low

1.0

[Reference value]

PCT Intermediate

0.76

[0.0292, 10.1]

PCT High

107

[10.2, 3460]

Ammann

Low

1.0

[Reference value]

High

1.431

[0.124, 32.6]

PCT Low

1.0

[Reference value]

PCT Intermediate

1.180

[0.051, 13.8]

PCT High

70

[6.5, 2040]

Rackoff

Low

1.0

[Reference value]

Intermediate

0.65

[0.055, 1.52]

High

Not estimable

PCT Low

1.0

[Reference value]

PCT Intermediate

1.29

[0.056, 1.53]

PCT High

178000000

[<0.001, infinite]

SPOG

Low

1.0

[Reference value]

High

1.438

[0.145, 14.8]

PCT Low

1.0

[Reference value]

PCT Intermediate

1.391

[0.057, 18.3]

PCT High

79

[8.5, 2016]

Alexander

Low

1.0

[Reference value]

High

0.299

[0.0135, 2.93]

PCT Low

1.0

[Reference value]

PCT Intermediate

1.229

[0.053, 14.7]

PCT High

139

[11.3, 5805]

PINDA

Low

1.0

[Reference value]

High

1.043

[0.046, 10.1]

PCT Low

1.0

[Reference value]

PCT Intermediate

1.216

[0.051, 14.7]

PCT High

79

[6.0, 3410]