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Table 4 Descriptive statistics for preprocessed dataset

From: Application of machine learning models on predicting the length of hospital stay in fragility fracture patients

Variable

Statistics

LOS ≤ 21

LOS > 21

Total

Correlation

p-value

Age

Min

 

27

41

27

-0.06795

3.00E-09

Max

 

109

105

109

Mean

 

83.230

82.608

83.006

SD

 

8.716

7.959

8.455

Sex

Count

M

1339

927

2266

-0.04065

0.00039

F

3520

1819

5339

EMS

Min

 

0

0

0

0.03336

0.003614

Max

 

20

18

20

Mean

 

3.620

3.360

3.526

SD

 

3.360

2.668

3.131

MFAC

Min

 

1

1

1

0.03784

0.037841

Max

 

7

7

7

Mean

 

2.940

2.874

2.917

SD

 

1.218

1.046

1.160

MoCA

Min

 

0

0

0

0.03784

5.66E-29

Max

 

30

30

30

Mean

 

9.109

10.121

9.475

SD

 

7.109

6.665

6.969

Residence from

Count

Home

3694

2504

6198

-0.2693

1.58E-126

OAH

1165

242

1407

Residence to

Count

Home

2762

1833

4595

-0.1653

9.22E-48

OAH

2097

913

3010

Surg_1-Acute_Adm

Min

 

0

0

0

-0.01226

0.284917

Max

 

379

377

379

Mean

 

3.063

3.415

3.191

SD

 

13.291

15.395

14.088

Acute_LOS

Min

 

0

0

0

-0.06293

3.95E-08

Max

 

382

383

383

Mean

 

9.882

9.998

9.924

SD

 

7.661

11.827

9.380

Pall_Adm-Acute_Adm

Min

 

0

0

0

-0.06896

1.74E-09

Max

 

87

383

383

Mean

 

9.915

10.075

9.973

SD

 

5.597

11.893

8.427

Acute_DC-Surg_1

Min

 

0

0

0

-0.08678

3.43E-14

Max

 

375

652

652

Mean

 

8.224

7.713

8.040

SD

 

10.955

14.130

12.200

Pall_Adm-Surg_1

Min

 

0

0

0

-0.09393

2.24E-16

Max

 

375

652

652

Mean

 

8.337

7.773

8.134

SD

 

11.025

14.161

12.253

Pall_Adm-Acute_DC

Min

 

0

0

0

-0.06310

3.63E-08

Max

 

748

726

748

Mean

 

0.422

0.343

0.394

SD

 

13.035

13.940

13.368

Acute hospital

Count

1

1678

1143

2821

N/A

N/A

2

979

695

1674

3

313

280

593

4

244

122

366

NA / Others

2151

2151

Diagnosis

Count

1

2408

1305

3713

N/A

N/A

2

2284

1342

3626

3

106

70

176

NA / Others

90

90