Table 3 Area under the curve (AUC) and 95% confidence interval (CI) across subgroups (n = 386)

30-day readmission

Overall

386

0.63 [0.56; 0.71]

Age group:

65–74

82

0.76 [0.63; 0.89]

(reference)

75–84

160

0.59 [0.45; 0.73]

0.069

85 + 

144

0.58 [0.46; 0.70]

0.031

Informant:

Patient

327

0.64 [0.56; 0.72]

(reference)

Caregiver

59

0.54 [0.37; 0.71]

0.279

Language spoken at home

English

210

0.66 [0.56; 0.76]

(reference)

French

97

0.64 [0.49; 0.79]

0.826

Other

79

0.53 [0.38; 0.69]

0.178

Previous admission to different hospital

No admission

246

0.63 [0.54; 0.72]

(reference)

Same hospital

121

0.56 [0.42; 0.70]

0.387

Different hospital

19

0.69 [0.39; 0.99]

0.710

90-day readmission

Overall

386

0.63 [0.57; 0.69]

Age group:

65–74

82

0.67 [0.54; 0.81]

(reference)

75–84

160

0.65 [0.55; 0.75]

0.795

85 + 

144

0.58 [0.48; 0.68]

0.272

Informant:

Patient

327

0.62 [0.56; 0.69]

(reference)

Caregiver

59

0.63 [0.48; 0.78]

0.919

Language spoken at home

English

210

0.61 [0.53; 0.69]

(reference)

French

97

0.69 [0.57; 0.81]

0.286

Other

79

0.63 [0.47; 0.78]

0.884

Previous admission to different hospital

No admission

246

0.62 [0.54; 0.70]

(reference)

Same hospital

121

0.51 [0.40; 0.61]

0.098

Different hospital

19

0.69 [0.39; 0.99]

0.653