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Table 9 Comparison of training and testing datasets – patient characteristics

From: Acute and chronic kidney disease in elderly patients with hip fracture: prevalence, risk factors and outcome with development and validation of a risk prediction model for acute kidney injury

Characteristics

Median [IQR]

Number (proportion %)

Training set

(N = 1880)

Testing set

(N = 968)

Length of Stay, days

16

[12–25]

15

[11–24]

Part stay in critical care

54 (2.9)

26 (2.7)

Proportion admitted multiple times, all 4 yrs.

1161 (61.8)

618 (63.8)

In patient deaths

192 (10.2)

111 (11.5)

30-day mortality

164 (8.7)

106 (11.0)

1 year mortality

533 (28.4)

306 (31.6)

AKI 0

1429 (76.0)

736 (76.0)

AKI 1

320 (17.0)

163 (16.8)

AKI 2

85 (4.5)

51 (5.3)

AKI 3

46 (2.4)

18 (1.9)