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Table 2 Baseline characteristics of participants separated in training and testing groups and univariate logistic regression showing the association between prolonged length of hospital stay (dependant variable) and 10-item Brief Geriatric Assessment (independent variables). (n = 1117)

From: Age effect on the prediction of risk of prolonged length hospital stay in older patients visiting the emergency department: results from a large prospective geriatric cohort study

Characteristics

Prolonged length hospital stay (i.e., > 13 days)

  

P-Value*

No (n = 840)

Yes (n = 277)

OR

[95% CI]

Age (years)

 Mean ± SD

85.14 ± 5.97

85.13 ± 5.62

  

0.0699

 ≥  70 years

840 (100.0)

276 (99.6)

–

–

0.5593

 ≥  75 years

834 (99.3)

271 (97.8)

0.325

[0.100;1.074]

0.0898

 ≥  80 years

672 (80.0)

230 (83.0)

0.268

[0.267;0.292]

0.3066

 ≥ 85 years

463 (55.1)

150 (54.2)

0.779

[0.779;0.781]

0.8329

Male gender, n (%)

351 (41.8)

114 (41.2)

0.975

[0.738;1.283]

0.9090

Number of drugs daily taken

 Mean ± SD

6.52 ± 3.22

6.33 ± 3.33

–

–

0.6094

  ≥ 5, n (%)

601 (71.5)

206 (74.4)

1.152

[0.849;1.577]

0.4055

Use of psychoactive drugsa, n (%)

398 (47.4)

139 (50.2)

1.267

[0.965;1.664]

0.1516

History of falls during the past 6 months, n (%)

516 (61.4)

175 (63.2)

1.122

[0.848;1.491]

0.6540

Temporal disorientationb, n (%)

259 (30.8)

150 (54.2)

2.652

[2.009;3.510]

< 0.0001

Non-use of formal and/or informal home-help servicesc

576 (68.6)

196 (70.8)

1.084

[0.807;1.464]

0.6828

Acute organ failure

503 (59.9)

178 (64.3)

1.204

[0.909;1.600]

0.2207

Living at home

594 (70.7)

198 (71.5)

1.037

[0.770;1.406]

0.8673

Acute organ failure as reason for admission to Emergency Department, n (%)

 Cardio-vascular diseases, n (%)

92 (11.0)

37 (13.4)

1.256

[0.825;1.880]

0.3282

 Respiratory diseases, n (%)

98 (11.7)

23 (8.3)

0.689

[0.418;1.091]

0.1469

 Digestive diseases, n (%)

79 (9.4)

13 (4.7)

0.479

[0.250;0.848]

0.0189

 Neuropsychiatric diseases, n (%)

121 (14.4)

30 (10.8)

0.724

[0.466;1.095]

0.1593

 Other diseases, n (%)

450 (53.6)

174 (62.8)

1.463

[1.108;1.940]

0.0089

  1. P-value significant (i.e., P < 0.05) in bold
  2. OR Odds Ratio, CI Confidence Interval, SD standard deviation
  3. *Comparison based on unpaired t-test or Pearson’s Chi-squared, as appropriate
  4. aUse of benzodiazepines or antidepressants or neuroleptics
  5. bInability to give the month and/or year
  6. cFormal (i.e., health and/or social professional) or informal (i.e., family and/or friends)
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BMC Geriatrics

ISSN: 1471-2318

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