Table 3 Results of logistic regression analysis having plasma glucose ≥ 140 mg/dl at discharge as the dependent variable in the training population

Age (years)

76.8 ± 6.8

77.2 ± 6.7

1.01

0.99–1.03

Gender (males)

332 (44.9)

245 (39.8)

0.88

0.70–1.12

Diastolic blood pressure < 80 mm Hg^*

101 (13.7)

126 (20.5)

1.63

1.19–2.22

Plasma glucose on admission (mg/dl)

<143

344 (46.5)

110 (17.9)

1.0

^**** – ^****

143–218^*

233 (31.5)

218 (35.4)

2.84

2.13–3.79

>218^*

162 (21.9)

287 (46.7)

5.29

3.91–7.15

White blood cells > 8970 cells/mm³

224 (30.3)

225 (36.6)

1.09

0.85–1.40

Serum sodium < 138 mEq/l

185 (25.0)

210 (34.1)

1.02

0.78–1.33

Insulin or combined hypoglycemic therapy prior to admission^*

100 (13.5)

151 (24.6)

2.03

1.50–2.75

Charlson's Index > 2^*

281 (38.0)

273 (44.4)

1.32

1.04–1.67